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Thermal Grizzly Kryonaut vs Arctic MX-6
| Spec | Kryonaut | Arctic MX-6 | Arctic MX-4 | Noctua NT-H2 |
|---|---|---|---|---|
| Conductivity | 12.5 W/mK | 12.6 W/mK | 8.5 W/mK | Around 8.9 W/mK |
| Longevity | 3 to 5 years | 8 years guaranteed | 4 to 8 years | 5 plus years |
| Electrically conductive | No | No | No | No |
| Price | Around $9 | Around $10 | Around $7 | Around $12 |
The Honest Temperature Difference: 0 to 2 Degrees
In controlled testing the temperature difference between Kryonaut and MX-6 is 0 to 2 degrees depending on platform. Application technique matters far more than which paste you choose.
When to Choose Kryonaut
New CPU installation, one-time application, or overclocking where peak conductivity is the priority.
When to Choose MX-6
Used GPU re-paste where the card has already seen heavy use, systems running sustained high loads, or anywhere you want the 8-year longevity guarantee.
The Budget Option
The Arctic MX-4 performs within 2 degrees of both premium pastes at $6 to $8. For budget builds where every dollar counts it is the correct choice.
Shop on Amazon: Thermal Grizzly Kryonaut — Best Peak Performance
Shop on Amazon: Arctic MX-6 — Best for Longevity
Shop on Amazon: Arctic MX-4 — Best Budget Option
Shop on Amazon: Noctua NT-H2 — Excellent Alternative
Shop on Amazon: 99% Isopropyl Alcohol — Clean Old Paste First