Key takeaways
- Conductivity vs. safety: High-end compounds like Kingpin KPx and Thermal Grizzly Kryonaut deliver top temperatures, while non-conductive options such as ARCTIC MX-6 remove any risk of shorting if paste spreads onto contacts.
- Match the amount to the job: A 1g tube suits a single CPU, but if you’re repasting several machines or a large GPU, a larger tube like the ARCTIC MX-4 or MX-7 8g is more economical.
- Durability matters for set-and-forget builds: Pastes marketed for long durability, like the MX-6 and MX-7, resist drying out, so you won’t need to reapply for years.
- Ease of application: Thicker, high-performance pastes can be harder to spread; kits that include applicators and cleaning wipes simplify a clean, even layer.
- Specialty needs: For GPU modding or replacing thermal pads, a non-conductive putty such as Thermal Grizzly TG Putty is purpose-built and far safer than standard paste.
What's inside
Thermal paste is the tiny detail that punches far above its weight. This thin layer between your CPU and cooler fills the microscopic gaps that would otherwise trap heat, and a good application can shave several degrees off your temperatures for pennies. In 2026, with processors packing more cores into tighter thermal envelopes, choosing the right compound and applying it well is one of the cheapest ways to protect performance and longevity.
The market ranges from reliable everyday pastes to exotic overclocking compounds and even non-conductive putties for GPU modding. The best choice depends on whether you’re doing a routine cooler install, chasing record temperatures, or worried about accidental spillage near sensitive components. Below we cover what to look for, then review five of the best thermal pastes and interface materials you can buy today.
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Watch: Best Thermal Paste 2026 — Video Review
How to Choose Thermal Paste
- Conductivity vs. safety: High-end compounds like Kingpin KPx and Thermal Grizzly Kryonaut deliver top temperatures, while non-conductive options such as ARCTIC MX-6 remove any risk of shorting if paste spreads onto contacts.
- Match the amount to the job: A 1g tube suits a single CPU, but if you’re repasting several machines or a large GPU, a larger tube like the ARCTIC MX-4 or MX-7 8g is more economical.
- Durability matters for set-and-forget builds: Pastes marketed for long durability, like the MX-6 and MX-7, resist drying out, so you won’t need to reapply for years.
- Ease of application: Thicker, high-performance pastes can be harder to spread; kits that include applicators and cleaning wipes simplify a clean, even layer.
- Specialty needs: For GPU modding or replacing thermal pads, a non-conductive putty such as Thermal Grizzly TG Putty is purpose-built and far safer than standard paste.
The Best Thermal Pastes Reviewed
ARCTIC MX-6 (8g)
The MX-6 is the go-to all-rounder for most builders, offering very high thermal conductivity in a non-conductive formula that’s forgiving to apply. The generous 8g tube covers many installations, and its long durability means you can paste a build and forget about it for years. Reliable, safe, and widely trusted, it’s the sensible default for CPUs, consoles, and graphics cards alike.
Thermal Grizzly Kryonaut (1g)
A perennial favorite among enthusiasts, Kryonaut delivers extremely high performance and consistent results even under demanding overclocking loads. The 1g tube is sized for a CPU or GPU repaste, and its reputation for stable temperatures across a wide range makes it a benchmark others are measured against. If you want proven top-tier cooling, Kryonaut remains a safe splurge.
Kingpin Cooling KPx (1g)
For those chasing the absolute lowest temperatures, KPx is an ultra-low thermal-resistance compound built for overclocking and heavy-duty use. It’s non-conductive yet delivers elite performance on CPUs, GPUs, laptops, and consoles. Enthusiasts pushing high-wattage chips to their limits will appreciate the extra headroom this premium paste provides over mainstream options.
ARCTIC MX-7 (8g)
The MX-7 builds on ARCTIC’s dependable reputation with ultimate-performance conductivity and long durability in a large 8g tube. It’s ideal for anyone repasting multiple systems or a big GPU cold plate, combining strong results with the peace of mind of a non-conductive formula. For high value across several installs, it’s tough to beat.
Thermal Grizzly TG Putty Basic (30g)
This one solves a different problem: TG Putty is a non-conductive thermal interface material designed for GPU modding and replacing worn thermal pads. The generous 30g portion lets you fill uneven gaps that regular paste can’t handle, making it invaluable for VRAM and power-stage cooling on graphics cards. For modders and repair jobs, it’s a specialty tool worth having.
Frequently Asked Questions
How often should I replace my thermal paste?
For most users, every few years is plenty, or whenever you remove the cooler. Durable pastes like the ARCTIC MX-6 and MX-7 last a long time. If you notice rising temperatures over the years, a fresh application often helps.
Is conductive thermal paste dangerous?
Some ultra-high-performance metal-based pastes can conduct electricity and short components if they spread onto contacts. Non-conductive options like the MX-6, MX-7, and KPx eliminate that risk, making them safer for less experienced builders.
How much paste should I apply?
A small pea-sized dot in the center of the CPU is the standard, letting cooler pressure spread it evenly. Too much can be messy without improving temperatures. Kits with applicators help you achieve a clean, thin layer.
Can I use CPU paste on my GPU or thermal pads?
Standard paste works on GPU cores, but for replacing thermal pads or filling larger gaps on VRAM and power stages, a dedicated putty like Thermal Grizzly TG Putty is the correct, safer choice.
Final Thoughts
Thermal paste is a small purchase with an outsized impact on temperatures and longevity. The ARCTIC MX-6 is the reliable everyday pick, Thermal Grizzly Kryonaut and Kingpin KPx serve overclockers chasing the lowest temps, and TG Putty handles specialty modding. Choose a non-conductive formula if you want extra safety, apply a thin even layer, and your CPU will run cooler for years.
