Key takeaways
- Thermal conductivity: Higher-performance compounds like the Thermal Grizzly Kryonaut lead to lower temperatures, making them ideal for overclocked or high-heat systems.
- Non-conductive formula: For peace of mind around pins and components, choose a non-conductive paste such as the ARCTIC MX series to avoid short-circuit risk from spills.
- Durability: Look for long-lasting formulas so you are not reapplying every year; ARCTIC MX-6 and MX-7 are known for extended service life.
- Quantity and value: Match the tube size to your needs; an 8g tube handles many applications, while a 1g tube suits a single build.
- Included extras: Kits with a spatula or cleaning wipes make application cleaner and easier, especially for first-time builders.
What's inside
Thermal paste is the humble bridge between your processor and its cooler, filling microscopic gaps to move heat efficiently away from the chip. It may be the cheapest component in your build, yet a quality application can shave several degrees off your temperatures, and a dried-out or poorly applied paste can quietly cripple performance.
With CPUs and GPUs running hotter than ever in 2026, choosing a reliable, long-lasting compound matters more than the tiny price suggests. Below we explain what separates the best pastes from the rest, then review five trusted options ranging from everyday all-rounders to extreme overclocking specialists.
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Watch: Best Thermal Paste 2026 — Video Review
How to Choose Thermal Paste
- Thermal conductivity: Higher-performance compounds like the Thermal Grizzly Kryonaut lead to lower temperatures, making them ideal for overclocked or high-heat systems.
- Non-conductive formula: For peace of mind around pins and components, choose a non-conductive paste such as the ARCTIC MX series to avoid short-circuit risk from spills.
- Durability: Look for long-lasting formulas so you are not reapplying every year; ARCTIC MX-6 and MX-7 are known for extended service life.
- Quantity and value: Match the tube size to your needs; an 8g tube handles many applications, while a 1g tube suits a single build.
- Included extras: Kits with a spatula or cleaning wipes make application cleaner and easier, especially for first-time builders.
The Best Thermal Pastes Reviewed
ARCTIC MX-6
The ARCTIC MX-6 (8g) is a superb all-around choice, delivering very high thermal conductivity in a non-conductive, easy-to-spread formula. Its generous tube size and long durability make it a smart pick for enthusiasts who build and rebuild often, offering flagship results without any electrical risk.
Thermal Grizzly Kryonaut
A favorite among overclockers, the Thermal Grizzly Kryonaut (1g) offers extremely high performance for the most demanding applications. It excels at keeping heavily loaded CPUs and GPUs cool, and its consistency makes it reliable across consoles and graphics cards as well as desktop processors.
ARCTIC MX-4
The classic ARCTIC MX-4 (4g) remains a benchmark for value and reliability. This premium, non-conductive paste is easy to apply, requires no cure time, and performs consistently for years, making it a foolproof choice for both newcomers and seasoned builders.
ARCTIC MX-7
The ARCTIC MX-7 (8g) pushes ARCTIC’s formula further, targeting ultimate performance with excellent thermal conductivity and long durability. The large tube is ideal for those who cool multiple systems, and its non-conductive nature keeps installations stress-free.
Thermal Grizzly Kryonaut Extreme
For record-chasing enthusiasts, the Thermal Grizzly Kryonaut Extreme (2g) is engineered for maximum thermal conductivity while overclocking. It ships with cleaning wipes for a tidy application and delivers the lowest temperatures for CPUs, GPUs, and even gaming consoles under heavy load.
Frequently Asked Questions
How often should I replace thermal paste?
For most users, every few years is plenty. Quality pastes like the ARCTIC MX series last for years, though you should reapply whenever you remove the cooler or notice temperatures climbing unexpectedly.
Is more paste better?
No. A small amount, roughly the size of a grain of rice or a thin spread, is ideal. Too much can trap air, reduce contact, and make a mess, so aim for a thin, even layer.
Are conductive pastes dangerous?
Some high-end metal-based pastes conduct electricity and require careful application. For worry-free installs, non-conductive options like the ARCTIC MX-6 or MX-4 eliminate the risk of shorting nearby components if you spill a little.
Does thermal paste really lower temperatures?
Yes, meaningfully. Fresh, high-quality paste ensures efficient heat transfer to your cooler, often improving temperatures by several degrees compared to dried-out or cheap compound, which can be the difference between throttling and stable performance.
Final Thoughts
Thermal paste is a tiny investment with an outsized impact on your system’s temperatures and longevity. The ARCTIC MX-4, MX-6, and MX-7 offer safe, durable, all-around excellence, while the Thermal Grizzly Kryonaut and Kryonaut Extreme cater to overclockers chasing every last degree. Pick a compound that matches your build’s heat and your comfort with application, and your CPU will run cooler and quieter for years to come.
