Thermal Grizzly Kryonaut Review – Still The Performer

Unboxing & Walkaround

The variant of Thermal Grizzly’s Kryonaut thermal paste we’re reviewing today is the extra large 10mL version, which comes in the form of a tear-off packaging that includes a card to verify authenticity, user manual, and scraper nozzles (there’s two of them, for some reason). Of course, if you’re just a casual PC builder, you can get the smaller versions available in 3mL, 1.5mL, and 1g (0.27mL) versions depending on your usage.

The tube comes with a screw cap by default, and you can screw in the optional nozzle that automatically flattens the paste as you squeeze out the paste from the tube. As such, the packaging doesn’t require the inclusion of a spatula-style scraper seen in competitor’s offerings.

Compared to several thermal pastes we’ve reviewed before, the Kryonaut thermal paste features a distinct oil layer on top of the silver-colored paste, which is also more viscous. This allows the paste to spread more easily under the clamping pressure, and that helps with overall thermal transfer.

Specifications

Thermal Grizzly Kryonaut (10mL, S-TG-K-100-R)

Full specifications available on product webpage and datasheet.

Color	Silver with transparent oil layer
Thermal Conductivity	Unspecified
Electrical Conductivity	Non-conductive
Operating Temperatures	-250°C to +350°C
Viscosity	130-170 Pa·s (kg/m·s)
Density	3.7g/cm³
Volume / Weight	0.27mL / 1g 1.5mL / 5.55g 3mL / 11.1g > 10mL / 37g

Test System

CPU	Intel Core i9-13900K
Cooling	Cooler Master MasterLiquid PL360 Flux 30th Anniversary Edition > Thermal Grizzly Kryonaut
Motherboard	ASUS ROG Maximus Z790 Apex
GPU	NVIDIA GeForce RTX 3080 Ti Founders Edition
Memory	Kingston FURY BEAST RGB DDR5-6800 CL34 (2x16GB) *configured to DDR5-6400 CL32 XMP profile
Storage	ADATA LEGEND 960 MAX 1TB
Power Supply	GameMax Rampage GX-1050 PRO (ATX 3.1) 1050W
Case	VECTOR Bench Case (Open-air chassis)
Operating System	Windows 11 Home 24H2

Thermals

The Thermal Grizzly Kryonaut is among the best-performing thermal paste in our list, mostly keeping the CPU temperatures around 82-83°C for the 10-minute 250W stress test. It’s also slightly better than the Hydronaut we reviewed recently, averaging a 2°C reduction; the Kryonaut also performs 1°C better than the Cooler Master MasterGel Maker.

Verdict

While the one we have here is the 10mL of the Kryonaut which costs RM379, most users don’t need this much volume: for single-use, the 1g version can be had at a much friendlier RM35 price tag (though it’s still a bit more expensive than competition). If you don’t worry too much about the cost of purchasing thermal paste – which is a minor expense in the context of PC building – the Thermal Grizzly Kryonaut should be one of the best option you can still get to this day.

Special thanks to Sun Cycle Sdn Bhd (local distributor for Thermal Grizzly) for providing the Kryonaut thermal paste for this review.