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Thermal Grizzly Kryonaut Thermal Paste (1 g)
A non-conductive overclocking paste with no curing time, sold in small sizes with no published W/mK figure.
- Paste
- 1 g
PCPR score
7.3
Good
Best price we’ve seen
$11.58Nov 9
Checked recently. Confirm at the retailer.
R1
The short version
Kryonaut is Thermal Grizzly's long-running paste for overclockers and demanding cooling, sold in 1 g, 1.5 ml, 3 ml and 10 ml sizes. The maker says it needs no curing, is not electrically conductive and holds up across a wide temperature range, quoting a 3.7 g/cm³ density and 130 to 170 Pa·s viscosity. Thermal Grizzly no longer publishes W/mK ratings and steers laptop users toward its Duronaut pastes instead.
Pros
- No curing time and no electrical conductivity per Thermal Grizzly
- Sold in four sizes from 1 g to 10 ml
- 1 g pack includes a spatula
- Wide stated operating temperature range
Cons
- Thermal Grizzly no longer publishes W/mK figures, making spec comparisons harder
- The maker points laptop users to Duronaut rather than Kryonaut
- The 1 g syringe is a small amount for repeat use
Best for
- Desktop CPU and GPU repastes for overclockers
- Builders who want a non-conductive paste
J3
Full specifications
Core
- Type
- Paste
- Quantity
- 1 g
Features
- Electrically conductive
- No
Compatibility notes
- Not electrically conductive per Thermal Grizzly, which lists 0 pS/m; it is not a liquid metal.
- Thermal Grizzly says it cannot bridge gaps larger than 0.2 mm; use pads or putty for VRAM and VRM gaps.
- Thermal Grizzly warns Kryonaut can be particularly prone to pump-out in direct-die use and recommends liquid metal for its direct-die coolers.
P1
Where to buy
Official store
Seen Nov 9, 2026
$11.58
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- See it at Micro Center
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AV1
Video reviews
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R9
Common questions
Is Kryonaut electrically conductive?
No. Thermal Grizzly says Kryonaut is not electrically conductive and lists 0 pS/m for electrical conductivity, unlike liquid metal products.
Is Kryonaut a good choice for laptops?
Thermal Grizzly says it can be used on laptop dies when the cooler is designed for thermal paste and makes reliable contact, but that Duronaut and Duronaut Pro are generally better suited to laptops.
What is Kryonaut's W/mK rating?
Thermal Grizzly says it stopped publishing general W/mK ratings at the end of 2020, so buyers should rely on independent temperature comparisons instead.
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