The best thermal paste for most builders in 2026 is the ARCTIC MX-7, which matches or beats legacy favorites on temperature while staying non-conductive, easy to spread, and fairly priced — especially in the 4 g bundle with MX-Cleaner. If you chase every last degree on an overclocked CPU, Thermal Grizzly Kryonaut remains the premium pick, and the ARCTIC MX-4 with spatula covers budget builds for a few dollars. The real tradeoff in this category is small temperature gaps — often just 1–3 °C — against big differences in price per gram, application forgiveness, and how long the paste lasts before pump-out. I’ve ranked 15 options here, including several size and bundle variants of the same formulas, so you can match the tube to your build count instead of overbuying. Read on for the full breakdown, buyer-type recommendations, and the mistakes that quietly waste money.
Complete the kit
Key Takeaways
- The performance gap has collapsed: ARCTIC‘s MX-7 now trades blows with Thermal Grizzly Kryonaut for noticeably less money, so the old pay-more-for-top-temps logic mostly applies to overclockers.
- Across these 15 picks, realistic temperature differences span roughly 1–3 °C on a typical air- or AIO-cooled build — cooler mounting pressure and full paste coverage matter more than the formula on the label.
- Many entries are the same paste in different sizes and bundles; MX-Cleaner wipes, spatulas, and applicator stencils often decide which SKU is the smarter buy, not the paste itself.
- A 4 g tube covers about 8–15 CPU applications, so single-build buyers should skip the 8 g and 45 g options — bulk sizes only make sense for repair shops, classrooms, and serial upgraders.
- Every top pick here is electrically non-conductive, which removes the short-circuit risk that makes liquid metal a poor default — and Kryonaut Extreme only justifies its price under sub-ambient cooling.
| Corsair TM30 Performance Thermal Paste (3 g with Applicator) |  | Best for Beginners | Type: Thermal paste | Volume: 3 grams | Material: Zinc oxide compound | VIEW LATEST PRICE | See Our Full Breakdown |
| ARCTIC MX-7 Thermal Paste (4 g) with MX-Cleaner |  | Best Overall | Weight: 4 g | Type: Thermal paste | Compatibility: CPUs, GPUs, laptops, consoles | VIEW LATEST PRICE | See Our Full Breakdown |
| Thermal Grizzly Kryonaut 1 Gram High-Performance Thermal Paste |  | Best Premium Performance | Quantity: 1 gram | Type: Thermal paste | Intended use: CPU, GPU, and overclocking | VIEW LATEST PRICE | See Our Full Breakdown |
| Thermal Grizzly Kryonaut 1 Gram Thermal Paste with Cleaning Wipes |  | Best Overclocking Kit | Quantity: 1 gram | Type: Thermal paste | Thermal conductivity: Extreme | VIEW LATEST PRICE | See Our Full Breakdown |
| ARCTIC MX-7 Thermal Paste (8 g) – High Performance CPU, GPU, and Laptop Thermal Compound |  | Best Value | Weight: 8 g | Type: Thermal paste | Compatible devices: Desktop, gaming console, graphics cards, laptop | VIEW LATEST PRICE | See Our Full Breakdown |
| Noctua NT-H2 3.5g Thermal Compound with Cleaning Wipes |  | Best Overall | Weight: 3.5 g | Applications per tube: Roughly 3–20 depending on CPU size | Compatibility: Desktop CPUs and GPUs (AMD Ryzen, Intel Core, Radeon, GeForce), PS4/PS5, Xbox, laptops | VIEW LATEST PRICE | See Our Full Breakdown |
| ARCTIC MX-6 Thermal Paste (4 g, includes 6 MX Cleaner) |  | Best Multi-PC Kit | Weight: 4 g | Included extras: 6 MX Cleaner sachets | Thermal conductivity: High (improved over MX-4) | VIEW LATEST PRICE | See Our Full Breakdown |
| ARCTIC MX-4 Thermal Paste (4 g) with Spatula |  | Best for Beginners | Quantity: 4 g | Material: Carbon microparticles | Electrical safety: Non-conductive, safe for electronics | VIEW LATEST PRICE | See Our Full Breakdown |
| Thermal Grizzly Kryonaut Extreme 2g Thermal Paste with Cleaning Wipes |  | Best for Overclocking | Package size: 2 g | Thermal conductivity: Extreme class | Included extras: 12 cleaning wipes (6 wet, 6 dry) | VIEW LATEST PRICE | See Our Full Breakdown |
| ARCTIC MX-4 Thermal Paste (4 g) for CPU and GPU |  | Best Value | Package size: 4 g | Thermal conductivity: Very high | Safety: Non-conductive, non-capacitive | VIEW LATEST PRICE | See Our Full Breakdown |
| ARCTIC MX-6 Thermal Paste (8 g) |  | Best Overall | Net Weight: 8 g | Thermal Conductivity: Very high (manufacturer rating) | Thermal Resistance: Lower than MX-4 generation | VIEW LATEST PRICE | See Our Full Breakdown |
| Thermal Grizzly Kryonaut Extreme – 2 Gram High-Performance Thermal Paste for CPU/GPU Overclocking |  | Best Premium for Overclocking | Net Weight: 2 g | Target Use: CPU/GPU overclocking | Thermal Conductivity: Exceptional (high-performance class) | VIEW LATEST PRICE | See Our Full Breakdown |
| ARCTIC MX-7 Thermal Paste (4 g) |  | Best for Long-Term Stability | Net Weight: 4 g | Thermal Conductivity: High | Electrical Conductivity: Non-conductive, non-capacitive | VIEW LATEST PRICE | See Our Full Breakdown |
| ARCTIC MX-6 Thermal Paste (4 g) |  | Best Value Pick | Net Weight: 4 g | Thermal Conductivity: Very high (manufacturer rating) | Electrical Conductivity: Non-conductive | VIEW LATEST PRICE | See Our Full Breakdown |
| ARCTIC MX-4 Thermal Paste (45 g) for CPU and GPU |  | Best Bulk Buy | Net Weight: 45 g | Compound Type: Carbon microparticle-based | Thermal Conductivity: High | VIEW LATEST PRICE | See Our Full Breakdown |
| thermal paste | Thermal conductivity | Compatibility | Electrical conductivity | Durability |
|---|---|---|---|---|
| Corsair TM30 Performance Therm | — | CPU and GPU | Non-conductive | — |
| ARCTIC MX-7 Thermal Paste | — | CPUs, GPUs, laptops, consoles | Non-conductive | Long-lasting; resists pump-out and dry-out |
| Thermal Grizzly Kryonaut 1 Gra | — | — | — | — |
| Thermal Grizzly Kryonaut 1 Gra | Extreme | — | — | Long-lasting; does not dry out |
| ARCTIC MX-7 Thermal Paste | — | — | Non-conductive | Long-term stability; resists pump-out and dry-out |
| Noctua NT-H2 3.5g Thermal Comp | — | Desktop CPUs and GPUs (AMD Ryzen, Intel Core, Radeon, GeForce), PS4/PS5, Xbox, laptops | — | — |
| ARCTIC MX-6 Thermal Paste | High (improved over MX-4) | — | Non-conductive | — |
| ARCTIC MX-4 Thermal Paste | — | — | — | — |
| Thermal Grizzly Kryonaut Extre | Extreme class | CPU, GPU, PS4, PS5, Xbox | — | — |
| ARCTIC MX-4 Thermal Paste | Very high | — | — | At least 8 years |
| ARCTIC MX-6 Thermal Paste | Very high (manufacturer rating) | CPUs, GPUs, consoles, laptops | Non-conductive | Long-lasting |
| Thermal Grizzly Kryonaut Extre | Exceptional (high-performance class) | — | — | — |
| ARCTIC MX-7 Thermal Paste | High | CPUs, GPUs, laptops, consoles | Non-conductive, non-capacitive | Long-term stability under thermal cycles |
| ARCTIC MX-6 Thermal Paste | Very high (manufacturer rating) | CPUs, GPUs, consoles, laptops | Non-conductive | Long-lasting |
| ARCTIC MX-4 Thermal Paste | High | CPU, GPU | Non-conductive | Long-lasting |
More Details on Our Top Picks
Corsair TM30 Performance Thermal Paste (3 g with Applicator)
The Corsair TM30 is the paste I’d hand to a first-time builder, and it earns that role mostly because of what’s in the box: an applicator stencil and spreader that take the guesswork out of laying down an even layer. The zinc oxide formula is non-conductive, so a sloppy first attempt won’t short anything on the board. Raw thermal performance sits a step below the ARCTIC MX-7, and well behind the Thermal Grizzly Kryonaut for overclocking headroom, but on a stock-clocked gaming PC the temperature gap is small enough that most builders will never feel it. The real tradeoff is pedigree: zinc oxide is an older-style compound, and anyone chasing benchmark numbers should spend more. For everyone else, 3 grams covers several builds at a price that’s hard to argue with.
Pros:- Included stencil and spreader make an even layer nearly foolproof
- Non-conductive zinc oxide compound is safe around exposed components
- 3-gram tube stretches across multiple builds
- Stays stable long-term without drying or cracking
Cons:- Thermal transfer sits a clear step below newer pastes like the ARCTIC MX-7
- Older zinc oxide formulation offers little overclocking headroom
- Included applicator encourages spreading, which can trap air if rushed
Best for: First-time PC builders and casual upgraders who want a forgiving, tool-assisted application on a stock-clocked CPU or GPU
Not ideal for: Overclockers and benchmark chasers — the zinc oxide formula trails premium pastes like Kryonaut under heavy, sustained loads
- Type:Thermal paste
- Volume:3 grams
- Material:Zinc oxide compound
- Compatibility:CPU and GPU
- Electrical conductivity:Non-conductive
- Thermal impedance:Ultra-low
- Included:Applicator stencil and spreader
- Service life:Long-lasting; resists drying and cracking
Our verdict“The stress-free starter paste: buy it for a first build or a stock-clocked machine and put the savings toward a better cooler.”
ARCTIC MX-7 Thermal Paste (4 g) with MX-Cleaner
If I had to pick one tube for most people, the ARCTIC MX-7 (4 g) with MX-Cleaner is it. ARCTIC’s newest formula posts thermal performance that crowds the Thermal Grizzly Kryonaut, yet it costs less per application and stays fully non-conductive, which matters when a stray dab lands somewhere it shouldn’t. The consistency is thick by design — it flattens under cooler pressure rather than spreading by hand — and that density helps it resist pump-out on laptops and consoles, where temperatures swing constantly. That same thickness is the main catch: beginners who want to trowel paste flat will find the Corsair TM30 friendlier. The bundled MX-Cleaner wipes also handle surface prep, a step the bare 1-gram Kryonaut tube skips. This is the balanced choice: near-flagship cooling, long service life, and very little fuss.
Pros:- High thermal conductivity that approaches Kryonaut-class performance
- Fully non-conductive, so application mistakes carry no short risk
- Resists pump-out and dry-out for long service intervals
- MX-Cleaner included for proper surface preparation
Cons:- Too viscous to spread by hand; relies on cooler pressure to distribute
- Costs more per gram than the 8 g MX-7 version
- Thick consistency demands a careful pea-or-line application technique
Best for: Most builders — gaming desktops, laptop and console repastes — who want near-flagship cooling with prep wipes included
Not ideal for: Beginners set on manually spreading paste (the thick consistency is meant to flatten under cooler pressure) and multi-build users who’d get better per-gram value from the 8 g tube
- Weight:4 g
- Type:Thermal paste
- Compatibility:CPUs, GPUs, laptops, consoles
- Electrical conductivity:Non-conductive
- Consistency:Viscous, performance-optimized
- Durability:Long-lasting; resists pump-out and dry-out
- Included:MX-Cleaner for surface prep
Our verdict“The paste most people should buy: flagship-adjacent cooling, safe chemistry, and everything needed for a clean install in one box.”
Thermal Grizzly Kryonaut 1 Gram High-Performance Thermal Paste
The Thermal Grizzly Kryonaut has been the default answer for shaving degrees off an overclocked CPU, and the reputation is earned: its conductivity sits a class above mainstream pastes like the Corsair TM30, and it won’t dry out even at 80°C, so cooling holds steady on hot, heavily loaded chips. What you’re really weighing is cost per gram — this is a 1-gram tube at a premium price, good for a couple of CPU mounts and little more. Against the ARCTIC MX-7, the real-world gap on a stock processor is a degree or two, which casual builders won’t notice. I’d reserve Kryonaut for high-TDP overclocks and GPU repastes where those degrees actually change fan noise and boost clocks. Kryonaut Extreme sits above it for subambient work, but for most overclockers the standard formula is the smarter spend.
Pros:- Top-tier conductivity built for demanding, overclocked chips
- Won’t dry out at sustained 80°C temperatures
- Syringe and spatula included for controlled application
- Long track record among enthusiasts and professional overclockers
Cons:- Very expensive per gram compared with the ARCTIC MX-7 or Corsair TM30
- 1-gram size runs out after two or three mounts
- Performance advantage shrinks to near-nothing at stock settings
Best for: Overclockers and GPU repasters chasing the lowest possible temperatures on high-TDP hardware
Not ideal for: Budget builders and multi-system maintainers — one gram won’t stretch past a couple of mounts, and stock-clocked PCs gain little over the cheaper MX-7
- Quantity:1 gram
- Type:Thermal paste
- Intended use:CPU, GPU, and overclocking
- Thermal performance:Exceptional conductivity
- Heat stability:Does not dry out at 80°C
- Included:Syringe and spatula
Our verdict“Worth the premium only if you’re pushing clocks or repasting a hot GPU — at stock speeds, the MX-7 gets you nearly the same result for less.”
Thermal Grizzly Kryonaut 1 Gram Thermal Paste with Cleaning Wipes
This bundle pairs the same Thermal Grizzly Kryonaut paste with 12 cleaning wipes — 6 wet, 6 dry — and the logic is simple: surface prep is half of a good repaste, and buying wipes separately eats most of the kit’s premium anyway. The compound itself matches the standalone 1-gram Kryonaut, with the same extreme conductivity and stability under sustained heat, so performance buyers lose nothing. The drawback is value per gram. The ARCTIC MX-7 with MX-Cleaner delivers a comparable prep-and-apply experience with four times the paste for less money, so this kit only makes sense when outright thermal performance is the priority — an overclocked flagship GPU, say, or an industrial cooling job. If you already own isopropyl alcohol and lint-free cloths, the wipes are redundant; buy the bare tube instead.
Pros:- Extreme conductivity suited to overclocking and industrial cooling
- 12 cleaning wipes (6 wet, 6 dry) cover thorough surface prep
- Long-lasting formula that resists drying under sustained heat
- Complete single-purchase kit with syringe and spatula
Cons:- Highest cost per gram in this lineup
- Only 1 gram of paste, so one careless mount wastes a big share of the purchase
- Wipes add cost if you already own proper cleaning supplies
Best for: Enthusiasts doing a one-time, high-stakes repaste on an overclocked CPU or flagship GPU who want prep supplies included
Not ideal for: Anyone repasting several machines — the ARCTIC MX-7 cleaner bundle offers far more paste and similar convenience for less money
- Quantity:1 gram
- Type:Thermal paste
- Thermal conductivity:Extreme
- Intended use:Overclocking, demanding applications, industrial cooling
- Durability:Long-lasting; does not dry out
- Included:Syringe and spatula
- Extras:12 cleaning wipes (6 wet, 6 dry)
Our verdict“The right buy for a single, high-stakes repaste where maximum cooling matters more than value — otherwise the MX-7 kit stretches further.”
ARCTIC MX-7 Thermal Paste (8 g) – High Performance CPU, GPU, and Laptop Thermal Compound
The ARCTIC MX-7 (8 g) is the same paste as my top pick in a tube twice the size, and the math favors anyone who mounts coolers on a regular basis — system builders, repair techs, and the household IT person maintaining several machines. Per gram it undercuts the 4-gram MX-7 kit and makes the 1-gram Kryonaut look extravagant, with identical performance across the line. What you give up is the bundled MX-Cleaner, so factor in isopropyl alcohol and lint-free cloths if they’re not already on your bench. The dense, pressure-spread consistency still won’t suit spread-by-hand users, who should look at the Corsair TM30 instead. For a single build this much paste is overkill, but for a workbench drawer, 8 grams covers a year or more of builds, repastes, and console refreshes without reordering.
Pros:- Lowest cost per gram in this lineup
- Same high thermal conductivity as the 4 g MX-7
- Electrically non-conductive and safe on any device
- Enough volume for many CPU, GPU, laptop, and console jobs
Cons:- No cleaning wipes included, unlike the 4 g MX-7 kit
- Far more paste than a one-off builder will ever use
- Dense consistency can’t be spread manually; needs cooler pressure
Best for: System builders, repair techs, and multi-PC households who repaste often enough to benefit from bulk pricing
Not ideal for: Single-build users — 8 g will sit in a drawer for years, and the smaller 4 g kit’s bundled cleaner is more useful for a one-off job
- Weight:8 g
- Type:Thermal paste
- Compatible devices:Desktop, gaming console, graphics cards, laptop
- Electrical conductivity:Non-conductive
- Consistency:Dense and viscous, high filler content
- Durability:Long-term stability; resists pump-out and dry-out
- Cleaning:Easy to clean with MX Cleaner
- Item dimensions:1 x 0.6 x 4.2 inches (L x W x H)
Our verdict“If you’ll mount more than a couple of coolers in the next year, this bulk tube is the obvious money-saving move.”
Noctua NT-H2 3.5g Thermal Compound with Cleaning Wipes
Noctua NT-H2 earns the top spot because it asks so little of the person using it. The paste spreads under cooler pressure alone, so there’s no spatula work and no guessing about coverage — a real advantage over the ARCTIC MX-4, which relies on a manual spread for its best results. Thermal performance sits close to what Thermal Grizzly Kryonaut Extreme delivers, yet the Noctua costs far less per application and doesn’t demand the careful handling an enthusiast compound does. The three included cleaning wipes mean the whole job finishes without a separate trip for isopropyl alcohol. The tradeoff is the 3.5g tube: builders repasting several large GPUs may run through it faster than expected, and it isn’t the cheapest per gram here. For one well-executed application on a main rig, it’s the package I’d hand to almost anyone.
Pros:- Spreads under cooler pressure, so no manual spatula work or coverage guesswork
- Thermal performance close to enthusiast pastes at a mid-range price
- Three cleaning wipes included for surface prep and cleanup
- Broad compatibility across CPUs, GPUs, consoles, and laptops
Cons:- 3.5g tube is tight for builders servicing several machines
- Costs more per gram than the ARCTIC MX-4 listings
- No spatula included for those who prefer manual spreading
Best for: PC builders who want one clean, no-spreading-required application on a primary gaming or work rig, with wipes in the box to finish the job
Not ideal for: Builders repasting multiple large GPUs in one session — the 3.5g tube runs out faster than bulk options like the 8g ARCTIC MX-6
- Weight:3.5 g
- Applications per tube:Roughly 3–20 depending on CPU size
- Compatibility:Desktop CPUs and GPUs (AMD Ryzen, Intel Core, Radeon, GeForce), PS4/PS5, Xbox, laptops
- Included extras:3 cleaning wipes
- Application method:No spreading required; spreads under cooler pressure
- Cooling suitability:Air and liquid cooling systems
Our verdict“The most complete single-repaste kit in this roundup, and my default recommendation for one careful application on a main PC.”
ARCTIC MX-6 Thermal Paste (4 g, includes 6 MX Cleaner)
The ARCTIC MX-6 improves on the older MX-4 formula with better thermal conductivity, and this bundle pairs the 4g tube with six MX Cleaner sachets — enough to prep and repaste several machines in one sitting. That makes it a smarter buy than the plain ARCTIC MX-4 listing for anyone maintaining more than one PC, since the cleaning supplies would otherwise be a separate purchase. It’s non-conductive, so a slightly clumsy application won’t short a motherboard the way a liquid metal compound might. Performance lands a step behind the Kryonaut Extreme, and hardcore overclockers will feel that gap under sustained load. The consistency is also a touch thicker than Noctua NT-H2, so spreading takes a bit more patience. For a home lab or a multi-PC household, I think the value math is hard to argue with.
Pros:- Improved thermal conductivity over the older MX-4 formula
- Six MX Cleaner sachets cover several prep-and-repaste jobs
- Non-conductive, so application mistakes won’t short components
- 4g tube handles CPUs, GPUs, laptops, and consoles
Cons:- Trails Kryonaut Extreme under sustained heavy loads
- Thicker consistency takes more patience to spread than NT-H2
Best for: Households or home labs maintaining two or more PCs, who get paste plus six cleaner sachets in a single purchase
Not ideal for: Overclockers chasing the last few degrees — Kryonaut Extreme pulls ahead of it under sustained heavy load
- Weight:4 g
- Included extras:6 MX Cleaner sachets
- Thermal conductivity:High (improved over MX-4)
- Electrical conductivity:Non-conductive
- Applications:CPU, GPU, laptop, console
- Formula generation:Newer MX-series compound
Our verdict“The sensible choice for anyone servicing multiple machines, bundling a newer formula with enough cleaning supplies to use all of it.”
ARCTIC MX-4 Thermal Paste (4 g) with Spatula
This version of the ARCTIC MX-4 ships with a small spatula, and that one inclusion changes who the product suits. First-time builders often either under-apply paste or smear it unevenly; a dedicated spreader makes full, thin coverage much easier to achieve on the first attempt. The carbon microparticle formula is non-conductive and non-capacitive, which removes the anxiety around stray paste touching components — a forgiving quality electrically risky alternatives can’t match. Compared with the Noctua NT-H2, it does need that manual spreading step, so absolute beginners who’d rather let cooler pressure do the work may prefer the Noctua. Peak thermals also trail the newer ARCTIC MX-6 by a small but real margin. Still, the formula carries a decade-long track record, and the 4g tube covers several applications. It’s the one I’d hand a first-time builder.
Pros:- Included spatula makes even first-time coverage easy
- Non-conductive and non-capacitive, so messy application won’t damage components
- Proven formula with a decade-long track record
- 4g tube covers several applications
Cons:- Requires manual spreading; less foolproof than pressure-spread pastes
- Peak thermals a step behind the newer MX-6
Best for: First-time builders who want the safety net of a non-conductive formula and a spatula to get even coverage on the first attempt
Not ideal for: Experienced users who’d rather skip the spreading step — NT-H2’s pressure-spread application is quicker and tidier
- Quantity:4 g
- Material:Carbon microparticles
- Electrical safety:Non-conductive, safe for electronics
- Included extras:Application spatula
- Applications:CPU, GPU
- Key feature:High thermal conductivity
Our verdict“A forgiving, well-proven paste whose included spatula makes it the friendliest starting point for a first build or repaste.”
Thermal Grizzly Kryonaut Extreme 2g Thermal Paste with Cleaning Wipes
Thermal Grizzly Kryonaut Extreme is the pick when temperatures are the whole point. It’s formulated for demanding overclocking and holds together at sustained high heat where mainstream pastes like the ARCTIC MX-4 start to plateau, making it the natural choice for a heavily tuned CPU or GPU. The non-curing formula resists drying out over time, and the bundle includes 12 cleaning wipes — six wet, six dry — the most generous prep kit in this roundup. The honest drawbacks: at only 2 grams, it’s the smallest tube here and the priciest per gram by a wide margin. For a stock-clocked gaming PC, the measurable gain over Noctua NT-H2 shrinks to a degree or two, which most buyers will never notice. I’d only recommend it to people chasing benchmark numbers or serious sustained-load headroom.
Pros:- Top-tier thermal conductivity aimed at demanding overclocks
- Non-curing formula resists drying out at high temperatures
- Most generous prep kit here: 6 wet plus 6 dry wipes
- Compatible with CPUs, GPUs, PS4/PS5, and Xbox
Cons:- Only 2g — the smallest and priciest-per-gram tube in the lineup
- Overkill for stock-clocked systems; minimal gain over NT-H2
Best for: Overclockers and enthusiast builders tuning CPUs or GPUs where every degree of thermal headroom counts
Not ideal for: Casual upgraders on a budget — at 2g and a premium per gram, the real-world gain over NT-H2 at stock clocks is a degree or two
- Package size:2 g
- Thermal conductivity:Extreme class
- Included extras:12 cleaning wipes (6 wet, 6 dry)
- Application:Syringe with applicator
- Compatibility:CPU, GPU, PS4, PS5, Xbox
- Formula:Non-curing
- Temperature stability:Up to 80°C
Our verdict“A specialist compound worth its premium only if you’re pushing clocks and need maximum thermal headroom.”
ARCTIC MX-4 Thermal Paste (4 g) for CPU and GPU
Strip away the spatula and the cleaning wipes, and what’s left is the same proven ARCTIC MX-4 formula at its lowest price point. The headline spec is eight-year durability: apply it once and it keeps working through several upgrade cycles, so the cost per year of service undercuts everything else in this lineup, including the newer ARCTIC MX-6. It’s non-conductive, tolerant of imperfect technique, and rated for CPUs, GPUs, and consoles — which covers how most people will actually use it. What buyers give up versus Kryonaut Extreme is peak thermal headroom: fine at stock clocks, limiting for aggressive overclocks. And unlike the Noctua NT-H2 bundle, there’s nothing in the box but paste, so budget for isopropyl alcohol if an old cooler needs cleaning. For a straightforward repaste on a sensible budget, it’s the one I’d pick.
Pros:- Rated for at least 8 years — lowest cost per year in the lineup
- Non-conductive and safe for beginners
- Reliable performance on CPUs, GPUs, and consoles
- Usually the cheapest way to buy the MX-4 formula
Cons:- Paste only in the box — no wipes, no spatula
- Thermal headroom too limited for aggressive overclocks
Best for: Budget-conscious builders doing a single repaste who want proven eight-year durability at the lowest cost per year in this roundup
Not ideal for: Anyone without cleaning supplies on hand — the box contains paste only, so old cooler residue needs separate isopropyl alcohol
- Package size:4 g
- Thermal conductivity:Very high
- Safety:Non-conductive, non-capacitive
- Durability:At least 8 years
- Applications:CPU, GPU, PS4, Xbox
- Material:Carbon microparticles
Our verdict“The no-frills budget pick: the same trusted MX-4 formula at its cheapest, as long as you already own cleaning supplies.”
ARCTIC MX-6 Thermal Paste (8 g)
This is the tube I’d hand to most builders without hesitation. ARCTIC MX-6 in the 8 g size pairs a current-generation formula with enough compound for half a dozen or more CPU mounts, so one purchase covers a main rig, a laptop repaste, and a console refresh. Compared with the 4 g MX-6 further down this list, you pay only slightly more for double the quantity, and unlike Thermal Grizzly Kryonaut Extreme, there’s no premium per-gram pricing attached. The tradeoff is peak performance: Kryonaut Extreme still posts lower temperatures on heavily overclocked chips, and the newer MX-7 promises better stability across thermal cycles. But non-conductive composition means a sloppy first application can’t short anything, which matters more for most people than a one-degree deficit. For mixed-use buyers, this sits at the sensible center of the lineup.
Pros:- 8 g tube covers multiple builds and devices, not just one install
- Non-conductive formula forgives imperfect application
- Far better price per gram than the 4 g MX-6
- Works across CPUs, GPUs, consoles, and laptops
Cons:- Trails Kryonaut Extreme on heavily overclocked hardware
- Improvement over the cheaper MX-4 varies by workload
- More paste than a single-build buyer will ever use
Best for: PC owners maintaining several machines — a desktop, a laptop, maybe a console — who want one safe, capable paste for all of them
Not ideal for: Overclockers chasing benchmark records, who will squeeze lower temperatures out of Thermal Grizzly Kryonaut Extreme
- Net Weight:8 g
- Thermal Conductivity:Very high (manufacturer rating)
- Thermal Resistance:Lower than MX-4 generation
- Electrical Conductivity:Non-conductive
- Compatibility:CPUs, GPUs, consoles, laptops
- Durability:Long-lasting
- Form Factor:Syringe tube
Our verdict“The most sensible single purchase for anyone maintaining more than one device.”
Thermal Grizzly Kryonaut Extreme – 2 Gram High-Performance Thermal Paste for CPU/GPU Overclocking
Every other paste on this list competes on value; Kryonaut Extreme competes on degrees. It’s aimed squarely at overclockers chasing benchmark stability, where its high conductivity and immediate temperature drop can mean the difference between a stable 5.8 GHz and throttling. The cost structure is the catch: at 2 g per syringe it carries the highest price per gram in this roundup, several times what MX-6 charges, and on a stock CPU the gap narrows to a degree or two — real, but hard to justify. It’s also rated for stability only up to 80°C, fine for daily rigs but not extreme-cooling setups. Compared with the forgiving ARCTIC options, this is a specialist tool: buy it when you’ve already tuned everything else and need the last few degrees.
Pros:- Lowest temperatures in this lineup on overclocked CPUs and GPUs
- Syringe and applicator included in the box
- Holds stability at sustained high temperatures up to 80°C
- Immediate temperature drop can also reduce fan noise
Cons:- Highest price per gram in the roundup by a wide margin
- Only 2 g per syringe, so multi-device users repurchase often
- Advantage shrinks to near-nothing on stock hardware
Best for: Overclockers and benchmark chasers who have already maxed out their cooler, case airflow, and voltage tuning
Not ideal for: Stock-clock builders on a budget — the premium over ARCTIC MX-6 buys only a degree or two at default settings
- Net Weight:2 g
- Target Use:CPU/GPU overclocking
- Thermal Conductivity:Exceptional (high-performance class)
- Coverage:Up to ~12 CPU applications, depending on size
- Temperature Stability:Up to 80°C
- Included:Syringe and applicator
- Claimed Effect:Immediate temperature reduction and lower noise
Our verdict“Worth the steep per-gram price only if you’re pushing clocks past stock and have already exhausted cheaper cooling gains.”
ARCTIC MX-7 Thermal Paste (4 g)
MX-7 is ARCTIC’s newest formula, and its pitch isn’t raw speed — it’s staying power. The compound is engineered to hold performance through years of heat-up and cool-down cycles, which makes it a smart pick for laptops and consoles you don’t want to reopen. The catch is application: unlike MX-6, MX-7 can’t be spread manually and relies on mounting pressure to distribute, so careless cooler installation shows up directly in your temperatures. Against Kryonaut Extreme it trades a little peak conductivity for far safer handling — it’s non-conductive and non-capacitive — and a much lower price per gram. I’d put it in compact, hard-to-service builds where reliability over five years beats winning a benchmark today. Tinkerers who remount coolers often should pick MX-6 instead.
Pros:- Formulated for long-term stability across repeated thermal cycles
- Non-conductive and non-capacitive, safe around exposed components
- Strong heat transfer at a much lower price per gram than Kryonaut Extreme
- Cleans up easily with ARCTIC MX Cleaner
Cons:- Cannot be spread manually; results depend heavily on mounting pressure
- Costs more per gram than the 8 g MX-6
- Benefits are modest if you repaste regularly anyway
Best for: Laptop and console owners who want one careful repaste they won’t need to revisit for years
Not ideal for: Builders who remount coolers frequently or want manual spreading control — MX-6 suits that workflow better
- Net Weight:4 g
- Thermal Conductivity:High
- Electrical Conductivity:Non-conductive, non-capacitive
- Compatibility:CPUs, GPUs, laptops, consoles
- Application Method:Pressure-distributed; no manual spreading
- Durability:Long-term stability under thermal cycles
- Cleanup:Compatible with ARCTIC MX Cleaner
Our verdict“The right choice for sealed-up laptops, consoles, and small-form-factor PCs where longevity matters more than peak numbers.”
ARCTIC MX-6 Thermal Paste (4 g)
The 4 g MX-6 is the same compound as our Best Overall pick, just in a smaller, cheaper tube — and for a single build or one-off repaste, that’s exactly the right amount. You get identical conductivity and the same forgiving, non-conductive behavior, so nothing about the result on your CPU changes. The math is the tradeoff: gram for gram it costs more than the 8 g MX-6, and heavy users will burn through it fast. Against the MX-4 45 g bulk tube, it loses badly on price per gram but wins on per-application performance, since MX-4 is an older formula. First-time builders who don’t want leftover paste aging in a drawer should start here; anyone maintaining several machines should size up.
Pros:- Identical modern formula to the 8 g MX-6 at a lower upfront price
- Right-sized for a single build with no waste
- Non-conductive, so application mistakes can’t short components
- Consistent viscosity makes spreading easy for beginners
Cons:- Higher cost per gram than its 8 g sibling
- Too little paste for multi-device maintenance or repeated applications
Best for: First-time builders doing one CPU or GPU install who want a modern, safe paste without paying for leftovers
Not ideal for: Anyone repasting multiple devices or large heatsinks — the tube empties fast and the 8 g version is cheaper per gram
- Net Weight:4 g
- Thermal Conductivity:Very high (manufacturer rating)
- Electrical Conductivity:Non-conductive
- Compatibility:CPUs, GPUs, consoles, laptops
- Viscosity:Consistent, easy to spread
- Durability:Long-lasting
- Coverage:A few standard CPU/GPU applications
Our verdict“The smart buy for exactly one build — anything more and you should step up to the 8 g tube.”
ARCTIC MX-4 Thermal Paste (45 g) for CPU and GPU
MX-4 is the veteran here, and this 45 g tube is the reason it still earns a spot: it’s one of the cheapest ways to buy competent thermal compound by the gram. Repair shops, refurbishers, and school IT carts — anyone repasting machines weekly — will go through it without flinching at the cost. Be clear about what you’re giving up, though. MX-4 is an older carbon-microparticle formula, so MX-6 and MX-7 both outperform it on modern high-wattage chips, and the difference grows on overclocked hardware. The carbon particles also make cleanup messier than with newer ARCTIC pastes, and a tube this large can dry out before a casual user finishes it. If your priority is throughput rather than squeezing out the last degree, the economics are hard to argue with.
Pros:- Among the cheapest pastes in the roundup per gram
- Enough compound for dozens of CPU and GPU applications
- Non-conductive and safe for beginners and pros alike
- Proven formula with a long track record
Cons:- Older carbon-based formula trails MX-6 and MX-7 on modern high-wattage chips
- Carbon microparticles make cleanup messier than newer pastes
- A tube this big can dry out before a casual user finishes it
Best for: Repair shops, refurbishers, and IT departments that repaste machines every week and measure cost per job
Not ideal for: Single-build home users — 45 g will likely dry out before it’s half used, and MX-6 outperforms it on modern chips
- Net Weight:45 g
- Compound Type:Carbon microparticle-based
- Thermal Conductivity:High
- Electrical Conductivity:Non-conductive
- Compatibility:CPU, GPU
- Application:Spreads easily with ideal consistency
- Durability:Long-lasting
Our verdict“Buy it by the gram if you repaste for a living; skip it if you build once a year.”
How We Picked
I ranked each paste on the factors that actually change ownership: thermal performance headroom on modern high-TDP CPUs and GPUs, viscosity and ease of application, long-term stability (resistance to drying and pump-out under repeated heat cycles), electrical safety, and price per gram. Because several entries are the same formula in different sizes, I also scored bundle value — included cleaning wipes, spatulas, and applicator tools can swing which SKU earns the higher slot.
The ordering reflects buyer outcomes, not spec-sheet wins. Pastes that combine near-flagship temperatures with forgiving application and fair pricing rank above niche compounds that only shine on exotic cooling. That’s why ARCTIC’s MX-7 leads the list, why Kryonaut sits in the premium tier rather than first place, and why the 45 g MX-4 is ranked on cost per application instead of peak performance.
| thermal paste | Compatibility | Electrical conductivity | Durability |
|---|---|---|---|
| Corsair TM30 Performance Therm | CPU and GPU | Non-conductive | — |
| ARCTIC MX-7 Thermal Paste | CPUs, GPUs, laptops, consoles | Non-conductive | Long-lasting; resists pump-out and dry-out |
| Thermal Grizzly Kryonaut 1 Gra | — | — | — |
| Thermal Grizzly Kryonaut 1 Gra | — | — | Long-lasting; does not dry out |
| ARCTIC MX-7 Thermal Paste | — | Non-conductive | Long-term stability; resists pump-out and dry-out |
| Noctua NT-H2 3.5g Thermal Comp | Desktop CPUs and GPUs (AMD Ryzen, Intel Core, Radeon, GeForce), PS4/PS5, Xbox, laptops | — | — |
| ARCTIC MX-6 Thermal Paste | — | Non-conductive | — |
| ARCTIC MX-4 Thermal Paste | — | — | — |
| Thermal Grizzly Kryonaut Extre | CPU, GPU, PS4, PS5, Xbox | — | — |
| ARCTIC MX-4 Thermal Paste | — | — | At least 8 years |
| ARCTIC MX-6 Thermal Paste | CPUs, GPUs, consoles, laptops | Non-conductive | Long-lasting |
| Thermal Grizzly Kryonaut Extre | — | — | — |
| ARCTIC MX-7 Thermal Paste | CPUs, GPUs, laptops, consoles | Non-conductive, non-capacitive | Long-term stability under thermal cycles |
| ARCTIC MX-6 Thermal Paste | CPUs, GPUs, consoles, laptops | Non-conductive | Long-lasting |
| ARCTIC MX-4 Thermal Paste | CPU, GPU | Non-conductive | Long-lasting |
Factors to Consider When Choosing Best Thermal Pastes
The reviews tell you which pastes are good; this section covers how to choose between them. Most regret in this category comes from buying the wrong size, paying for performance a stock CPU can’t use, or applying a great paste badly — the factors below address each of those failure points so the pick you land on actually delivers.
Match the Tube Size to Your Build Count
Thermal paste is sold by weight, and the spread between a 1 g tube and a 45 g tube is the difference between two applications and well over a hundred. A single CPU mount uses roughly 0.2–0.5 g, so a 4 g tube covers about 8–15 applications — far more than one builder needs. That’s why the 1 g Kryonaut tubes make sense only if you’re committed to that formula for one or two mounts, and why the 45 g MX-4 belongs in repair shops and classrooms rather than a first-time builder’s cart. Once opened, most pastes stay usable for two to three years if the cap is sealed tight, but they slowly thicken and get harder to spread. The common mistake is overbuying premium paste in a size you’ll never finish; the opposite mistake — grabbing a single 1 g tube and having nothing left after a cooler remount — is just as annoying. Buy the smallest size that covers your planned builds plus one repaste.
How Much Performance You Actually Need
On a typical air- or AIO-cooled desktop, the gap between the best paste here and a solid mid-range option is around 1–3 °C — real, but rarely enough to change fan noise or boost clocks. Premium compounds like Kryonaut and MX-7 earn their price on high-TDP, overclocked chips, bare-die laptop GPUs, and delidded CPUs, where heat density is high and every degree feeds back into clock speed. For a stock 65 W processor, the extra spend buys bragging rights rather than frames. A useful rule: if your cooler cost less than the paste upgrade you’re debating, upgrade the cooler first. Where premium paste does pay for itself quietly is consistency — top formulas hold their performance through years of heat cycles instead of fading after one summer. Decide based on your chip’s power draw and your tolerance for fan noise, not on the biggest conductivity number printed on the box.
Viscosity, Spread, and the Mistakes That Ruin Good Paste
A great paste applied badly loses to a cheap paste applied well. Thicker compounds like Noctua’s NT-H2 hold their shape and suit the classic pea-sized dot on a desktop heat spreader; thinner pastes spread more easily across bare laptop dies and large GPU chips, where there’s no spreader to help. The most common error is using too much — excess paste squeezes out, insulates instead of conducts, and can ooze toward the socket over time. The second mistake is reusing paste after pulling a cooler to check the mount; once the seal breaks, wipe it clean and start over. Applicator stencils, like the one bundled with Corsair’s TM30, take the guesswork out for first-timers, while a spatula helps if you prefer spreading manually. And no paste fixes weak mounting pressure: if the cooler rocks or the screws tighten unevenly, even Kryonaut performs like a budget tube.
Electrical Conductivity and Safety Margins
Every paste ranked in this roundup is electrically non-conductive, and that’s a deliberate editorial choice. Conductive compounds — liquid metal above all — can drop temperatures further, but they corrode aluminum on contact, and a single stray drop can short the surface-mount components around a CPU socket. For the degree or two that risk buys on standard cooling, it fails any sensible cost-benefit test for typical builders. If you run an open test bench, delid chips, or cool below ambient, you already know why you’d break this rule; everyone else should treat non-conductive as a hard filter. Capacitive pastes sit in between — they won’t short a board instantly but can still cause odd behavior if they bridge contacts. Sticking with the ceramic and carbon-based formulas here removes an entire category of avoidable failure.
Longevity, Pump-Out, and When to Repaste
Thermal paste doesn’t die on a calendar; it dies from heat cycles. Each power-on expands the CPU and cooler, and over hundreds of cycles that pumping action slowly pushes paste out of the interface — an effect that’s harshest on laptops, where dies run hot and cooling headroom is thin. Quality formulas from ARCTIC, Noctua, and Thermal Grizzly are engineered against this, which is part of what you pay for above the budget tier. On a desktop, expect three to five years before a repaste makes sense; a heavily used gaming laptop may want attention closer to every two. Rather than repasting on a schedule, watch your temperatures: if idle and load temps creep up at the same ambient and fan speeds, the paste is telling you it’s done. Chasing a fixed calendar wastes effort, and opening the cooler breaks the old seal either way.
Bundle Extras and Price-per-Gram Math
Several entries in this roundup are the same formula in different packaging, so the smarter buy often comes down to what’s in the box and what each gram costs. Cleaning-wipe bundles are worth a couple of dollars if you don’t already own isopropyl alcohol and lint-free cloths; they’re dead money if you do. Spatulas matter more than they look — manual spreading is still the most reliable way to coat a bare laptop die edge to edge. Run the price-per-gram math before choosing a size: larger tubes almost always win on paper, but a paste you can’t finish before it thickens is waste, not savings. Also compare across brands at the same size, since MX-7’s 8 g tube often undercuts buying two 4 g tubes of a rival formula. Treat the bundle as a small tiebreaker, the size as the real decision, and the formula as the thing you settled three sections ago.
Frequently Asked Questions
How much thermal paste do I actually need for one CPU?
A single desktop CPU mount needs roughly 0.2–0.5 g — a pea-sized dot or a short line across the center of the heat spreader. That means even a 1 g tube covers two to three mounts, and the standard 4 g size handles eight to fifteen. You only need more if you’re coating bare GPU or laptop dies edge to edge, since those have no heat spreader and demand full coverage. Buying two 1 g tubes just in case usually costs more than one 4 g tube of an equally capable paste, so size up instead of doubling up. The exception is premium formulas: if you want Kryonaut specifically, the 1 g size keeps the total spend sane.
Is premium thermal paste worth it over a budget option like MX-4?
For most builds, the honest answer is no — a stock or lightly boosted CPU will run within 1–3 °C on MX-4 of what it hits on Kryonaut, and neither number changes how the PC feels. Premium paste starts paying off around 150 W and up: overclocked flagship CPUs, hot laptop dies, and direct-die setups where heat flux is brutal. There’s also a longevity argument, since top formulas resist pump-out and drying better through years of heat cycles. My rule of thumb: if the paste upgrade costs more than a step up in your cooler, buy the cooler. If your chip already runs near its thermal limit and the cooler is maxed out, that’s when the premium tube earns its keep.
How often should thermal paste be replaced?
On a desktop, a quality paste typically lasts three to five years; laptops under heavy load may need a repaste closer to every two. Skip the rigid schedule and watch your temps instead. If idle or load temperatures climb noticeably at the same room temperature and fan speeds, the paste has likely dried or pumped out, and a repaste will bring those numbers back down. Any time you remove the cooler for any reason, the old application is compromised — clean both surfaces with isopropyl alcohol and apply fresh paste rather than reseating onto the old layer. Frequent unnecessary repasting isn’t harmful, but it wastes paste and invites mounting mistakes for no gain.
Can I use the same paste on a CPU, GPU, and laptop?
Yes — every paste in this roundup works across all three, which is exactly why they’re labeled for CPU and GPU. The difference is how you apply them and how much you need. Desktop CPUs have a metal heat spreader, so a central dot spreads under mounting pressure; bare GPU and laptop dies need full edge-to-edge coverage, spread manually or applied as a thin cross, because gaps mean hotspots on exposed silicon. Laptops also punish paste harder with rapid heat cycles, so a formula with strong pump-out resistance — MX-6, MX-7, or NT-H2 — is the smarter choice there even if a budget paste benchmarks similarly on day one. If you service both a desktop and a laptop, buy one mid-size tube of a versatile paste rather than two specialized ones.
Why do the same pastes come in so many versions, and which should I buy?
Most of the 15 entries here are size and bundle variants of four formulas — ARCTIC’s MX-4, MX-6, and MX-7, plus Thermal Grizzly’s Kryonaut line. Brands sell them this way because a first-time builder, a serial upgrader, and a repair shop need wildly different quantities. Pick the formula first based on your performance tier, then choose the smallest size that covers your planned builds plus one repaste — 4 g for most people, 8 g if you maintain several PCs, 45 g only for shops. Add the cleaning-wipe bundle if you lack isopropyl alcohol at home, and skip it if your toolkit is already stocked. The plain and bundled versions perform identically, so this final step is pure value math, not a performance decision.
Conclusion
If I had to hand out one tube without knowing anything about the build, it would be the ARCTIC MX-7 (4 g) with MX-Cleaner — flagship-class temperatures, a forgiving spread, and everything you need in one box, which is why it tops this list. From there, the right pick follows from what kind of builder you are:
- Best value: the ARCTIC MX-4 with spatula — near-mid-range temps for a few dollars, and the spreader makes coverage foolproof.
- Best premium: Thermal Grizzly Kryonaut for high-end air and AIO builds pushing serious wattage; the 1 g wipe bundle is the sane way to buy it.
- Best for extreme overclocking: Kryonaut Extreme, which only makes sense under sub-ambient cooling — on a normal loop you’re paying for headroom you’ll never touch.
- Best for beginners: the Corsair TM30, whose applicator stencil removes the one step first-timers get wrong.
- Best for set-and-forget builds: Noctua NT-H2, the pick I’d trust in a machine you won’t open for five years.
- Best for laptops and multi-PC households: ARCTIC MX-6 in the 8 g size — strong pump-out resistance and a per-gram price that rewards repeat use.
- Best bulk buy: the 45 g MX-4 for repair shops and classrooms where cost per application rules everything.
Whichever lane you fall in, every paste here is non-conductive and well regarded — the mistakes that actually cost you are buying the wrong size and applying it badly, not choosing one ranked entry over another.
