Description
Thermal Grizzly Kryonaut Extreme is the thermal paste of choice for serious Bitcoin home miners running their hardware to the limits. The 14.2 W/mK thermal conductivity, zero electrical conductivity, and no-curing formula make it the go-to thermal-paste for Bitaxe, NerdAxe, Canaan, or any other small home ASIC miner that needs maintenance.
Solo Satoshi sources every tube direct from Thermal Grizzly. Counterfeit thermal paste is a documented problem on third-party marketplaces, and direct sourcing is the only way to guarantee authentic Kryonaut Extreme with verified 14.2 W/mK performance.
Technical Specifications
| Specification | Value |
|---|---|
| Product | Thermal Grizzly Kryonaut Extreme |
| MPN | TG-KE-002-R |
| EAN | 4260711990052 |
| Net Weight | 2 grams |
| Volume | 0.6 mL |
| Color | Pink |
| Thermal Conductivity | 14.2 W/mK |
| Density | 3.76 g/cm³ |
| Viscosity | 130 to 180 Pa·s |
| Electrical Conductivity | 0 pS/m (non-conductive) |
| Operating Temperature Range | -250°C to +350°C |
| Curing | None, does not harden over time |
| Coverage per Tube | Approximately 50 to 80 small ASIC applications |
| Included | 2g tube and 2 precision spreading tips |
| Sourcing | Direct from Thermal Grizzly |
| Ships From | Houston, Texas, USA |
Kryonaut Extreme vs Thermalright, Noctua, and Arctic Thermal Pastes
Kryonaut Extreme sits at the top of the non-conductive paste category by raw thermal conductivity, and Thermal Grizzly’s own published TIM tester benchmark (30x30mm contact area, 300N force, 240W heat flow) ranks Kryonaut Extreme third out of seven across the full Thermal Grizzly catalog at a measured 6.87 ΔK, narrowly behind Duronaut (6.50 ΔK) and Polartherm X-10 (6.85 ΔK). For comparison against the most common competing brands home miners actually consider:
| Thermal Paste | Thermal Conductivity | Electrically Conductive | Operating Range | Best Use Case |
|---|---|---|---|---|
| Thermal Grizzly Kryonaut Extreme | 14.2 W/mK | No | -250°C to +350°C | Top-tier ASIC overclocking and long-term home mining |
| Thermal Grizzly Kryonaut | 12.5 W/mK | No | -200°C to +350°C | Standard ASIC repaste |
| Thermalright TFX | 14.3 W/mK (claimed) | No | -250°C to +300°C | High-pressure mounts only, very stiff consistency |
| Thermalright TF8 | 13.8 W/mK (claimed) | No | -220°C to +380°C | Budget ASIC repaste |
| Noctua NT-H2 | Not published | No | -50°C to +200°C | General-purpose CPU and GPU |
| Arctic MX-6 | Not published | No | -50°C to +150°C | Long-life consumer CPU use |
The key differences that matter for a small home ASIC miner: Kryonaut Extreme has the widest operating range of any paste in this comparison, the lowest viscosity in the high-performance non-conductive category (meaning easier application on a small ASIC die), no curing process (the paste does not harden over years of continuous 24/7 mining), and a published thermal conductivity figure that Thermal Grizzly validates with their own published TIM tester data. Thermalright’s TFX has a higher claimed conductivity but a viscosity so stiff that independent testers like Igor’s Lab have flagged it as “putty” that fails on low-pressure mounts (most small ASIC heatsinks have lower mounting pressure than CPU coolers). Noctua and Arctic both decline to publish thermal conductivity numbers entirely, making spec comparisons impossible.
Which Home Miners Does This Paste Work With?
Kryonaut Extreme works on every small home Bitcoin miner currently sold. The 2-gram tube covers approximately 50 to 80 applications across mixed hardware, enough for a single home miner’s lifetime of repastes or annual maintenance across a fleet.
| Home Miner | ASIC Chip | Paste Required Per Application |
|---|---|---|
| Bitaxe Gamma 602 | BM1370 | ~0.04g (rice grain) |
| Bitaxe Supra | BM1368 | ~0.04g (rice grain) |
| Bitaxe GT (Gamma Turbo) | BM1370 | ~0.04g (rice grain) |
| Bitaxe Touch | BM1370 | ~0.04g (rice grain) |
| Bitaxe Duo 650 | Dual BM1370 | ~0.08g (two rice grains) |
| Nerdaxe Gamma | BM1370 | ~0.04g (rice grain) |
| NerdQaxe++ | 4x BM1370 | ~0.16g (four rice grains) |
| NerdQaxe Hydro | 4x BM1370 | ~0.16g (four rice grains) |
| Hammer Miner | BM1370 | ~0.04g (rice grain) |
| Avalon Nano 3S | Canaan A3 series | ~0.05g (small pea) |
| Avalon Mini 3 | Canaan A3 series | ~0.05g (small pea) |
How to Apply Kryonaut Extreme to an ASIC
- Power down and unplug the miner completely. Allow the heatsink to cool to room temperature.
- Remove the heatsink and clean both the ASIC die and the heatsink contact surface with 99% isopropyl alcohol on a lint-free cloth.
- Apply a single rice-grain-sized dot of Kryonaut Extreme to the center of the ASIC die.
- Reinstall the heatsink with even pressure on all mounting screws/pins, torquing in a star pattern (if heatsink has mounting hardware).
- Power on the miner and monitor ASIC temperature on your miner’s dashboard. A successful repaste typically drops ASIC temperatures by 5°C to 12°C versus degraded factory paste.
- 1x 2-gram tube of Thermal Grizzly Kryonaut Extreme thermal paste
- 2x precision spreading tips.
- 1x certificate of origin.
- 1x instruction pamphlet.
For the full maintenance overview and video, see our Home Mining Maintenance and Care guide.
What is included in the box?
Shipping and Sourcing
Ships same-day from Houston, Texas when ordered before the daily cutoff of 12PM CST. Sourced direct from Thermal Grizzly, never from third-party resellers.
