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Thermal Grizzly Duronaut - 6 Gram - Enhanced Durability & High Performance Thermal Paste - for Maximum Thermal Conductivity While Overclocking CPU/GPU/PS4/PS5/Xbox
Thermal Grizzly

Thermal Grizzly Duronaut

Bottom line: The Thermal Grizzly Duronaut ($15.99 on Amazon as of 2026-10-06): 6 g syringe covers many CPU, GPU, and console repastes; main trade-off: no published W/mK figure in the listing to compare directly.

$15.99

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Buy on Amazon — $15.99 Compare to similar retro cpu coolers & fans

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 6 g syringe covers many CPU, GPU, and console repastes
  • ✓ Aluminum microparticle plus zinc oxide nanoparticle blend
  • ✓ Electrically non-conductive: safe near GPU surface-mount parts
  • ✓ Particle mix engineered to minimize pump-out drift
  • ✓ TG Spatula Pro included for thin, even spreading

Cons

  • ✗ No published W/mK figure in the listing to compare directly
  • ✗ Spatula spreading takes longer than the pea-dot method
  • ✗ Non-metallic paste trails liquid metal on raw conductivity

Manufacturer description

The Thermal Grizzly Duronaut is a 6-gram thermal paste built for people who repaste once and want it to hold. Its compound blends aluminum microparticles with zinc oxide nanoparticles, a formulation Thermal Grizzly specifies for efficient heat transfer between your CPU or GPU die and the cooler cold plate. The stated design goal is long-term stability: the paste resists hardening over extended service intervals, and its particle composition is engineered to minimize the pump-out effect, the slow migration of compound out from under the cold plate that causes temperatures to creep upward…

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SpecPicks Verdict

SpecPicks scored Thermal Grizzly Duronaut using a rating × review-volume × price-fit model applied to published specs and reviews across the retro cpu coolers & fans category. Thermal Grizzly's retro cpu coolers & fans lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for retro cpu coolers & fans of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

How many applications do you get from a 6 gram tube?

That depends on die size and how thick you spread. A 6 g tube is sized for repeat use across multiple CPU, GPU, and console jobs rather than a single application, but Thermal Grizzly does not publish an application count.

Is Duronaut safe to use on a graphics card or console board?

Yes. Thermal Grizzly states Duronaut is electrically non-conductive, so contact with nearby electronic components will not cause a short circuit. The listing covers CPU, GPU, PS4, PS5, and Xbox use.

Will it dry out or harden over time?

Thermal Grizzly specifies Duronaut for exceptional long-term stability, maintaining performance over extended periods without hardening. Actual service life varies with thermal load and cycling.

What is the pump-out effect and does this paste address it?

Pump-out is compound slowly migrating out from between the die and cold plate under thermal cycling, raising temperatures over time. Duronaut's particle composition is formulated to reduce thermal resistance and improve adhesion, which minimizes pump-out.

Do I need a separate applicator tool?

No. The TG Spatula Pro is included in the box for spreading a precise, thin layer. Thermal Grizzly recommends a thin even layer to maximize thermal efficiency.

Key Features

  • EXCEPTIONAL LONG-TERM STABILITY: Duronaut is engineered for outstanding durability, maintaining its performance over extended periods without hardening.
  • SUPERIOR THERMAL CONDUCTIVITY: Formulated with aluminum microparticles and zinc oxide nanoparticles, it ensures efficient heat transfer for optimal cooling.
  • ELECTRICALLY NON-CONDUCTIVE: Safe to use on all electronic components, preventing any risk of short circuits during application.
  • MINIMIZED PUMP-OUT EFFECT: The specialized particle composition reduces thermal resistance and enhances adhesion, ensuring consistent performance.
  • EASY APPLICATION: Includes the TG Spatula Pro for precise and thin layer application, maximizing thermal efficiency.

Full Specifications

BrandThermal Grizzly
Weight6 gram
CompatibilityPS5, PS4, Xbox
EASY APPLICATIONIncludes the TG Spatula Pro for precise and thin layer application, maximizing thermal efficiency.
MINIMIZED PUMP-OUT EFFECTThe specialized particle composition reduces thermal resistance and enhances adhesion, ensuring consistent performance.
ELECTRICALLY NON-CONDUCTIVESafe to use on all electronic components, preventing any risk of short circuits during application.
SUPERIOR THERMAL CONDUCTIVITYFormulated with aluminum microparticles and zinc oxide nanoparticles, it ensures efficient heat transfer for optimal cooling.
EXCEPTIONAL LONG-TERM STABILITYDuronaut is engineered for outstanding durability, maintaining its performance over extended periods without hardening.
Full listing titleThermal Grizzly Duronaut - 6 Gram - Enhanced Durability & High Performance Thermal Paste - for Maximum Thermal Conductivity While Overclocking CPU/GPU/PS4/PS5/Xbox

Ready to buy?

Thermal Grizzly Duronaut - 6 Gram - Enhanced Durability & High Performance Thermal Paste - for Maximum Thermal Conductivity While Overclocking CPU/GPU/PS4/PS5/Xbox is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $15.99

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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Thermal Grizzly Duronaut - 6 Gram - Enhanced Durability & High Performance Thermal Paste - for Maximum Thermal Conductivity While Overclocking CPU/GPU/PS4/PS5/Xbox
$15.99
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