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Alphacool Subzero vs Thermal Grizzly Hydronaut: Comparison

Alphacool Subzero and Thermal Grizzly Hydronaut separate most on thermal conductivity: Alphacool Subzero at 16 W/mK, Thermal Grizzly Hydronaut at 7.8 W/mK, 51% in favour of Alphacool Subzero. They match on 4 other specifications, including electrical conductivity, reapplication interval and safety notes.

Specs

Specification
Alphacool Subzero (High-Performance Silicone-Based/Non-Conductive/16 W/mK)
Alphacool Subzero
Thermal Grizzly Hydronaut (Silicone/Metal-Oxide Based/Non-Conductive/7.8 W/mK/Built for Large Cooling Surfaces)
Thermal Grizzly Hydronaut
Compound TypeHigh-Performance Silicone-BasedSilicone-Based (silicone/metal-oxide)
BrandAlphacoolThermal Grizzly
ModelAlphacool Subzero , SubzeroThermal Grizzly Hydronaut , Hydronaut
Thermal Conductivity16 W/mK7.8 W/mK-51%
Electrical ConductivityInsulatingInsulating
Package Size1g / 3.5g / 20g tubes3.9g / 7.8g tubes
Recommended UseHigh-end CPU/GPU (including overclocking)Mainstream CPU/GPU, High-end CPU/GPU (upper-mid builds; suited to large cooling surfaces such as PS4/PS5/Xbox)
Reapplication IntervalVerify manufacturer-rated intervalVerify manufacturer-rated interval
Safety NotesNoneNone
Paste SegmentStandard PasteStandard Paste

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