Thermal Grizzly Carbonaut (Carbon Pad/Conductive/Reusable/Commonly Cited ~62.5 W/mK)
- Model:
- Thermal Grizzly Carbonaut
- Compound Type:
- Carbon Pad
- Thermal Conductivity:
- ~62.5 W/mK (commonly cited
- Electrical Conductivity:
- Conductive
- Package Size:
- 31x25x0.2mm / 32x32x0.2mm / 38x38x0.2mm sheets
- Recommended Use:
- High-end CPU/GPU (also consoles and frequent cooler remounts)
- Reapplication Interval:
- Reusable across multiple mounts
- Safety Notes:
- Electrically conductive
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Manufacturer: Thermal Grizzly Last updated: September 10, 2026
Description
If you've been searching for a thermal pad that skips the syringe entirely, Carbonaut is one of the two names that come up over and over, and for good reason. It's a carbon sheet, not a paste, so there's no spreading, no mess, and no guessing how much to use. You cut it to size, drop it on the die, and you're done.
If you've been searching for a thermal pad that skips the syringe entirely, Carbonaut is one of the two names that come up over and over, and for good reason. It's a carbon sheet, not a paste, so there's no spreading, no mess, and no guessing how much to use. You cut it to size, drop it on the die, and you're done.
Thermal Performance and Conductivity
Thermal Grizzly quotes Carbonaut around 62.5 W/mK, which if accurate puts it well above every paste in our catalog, including liquid metal alternatives like Conductonaut on paper. We say "if accurate" because Thermal Grizzly isn't always consistent about publishing this number across every retail listing, so treat it as a strong estimate rather than gospel until we've confirmed it against their current datasheet.
Compound Type and Composition
It's a carbon-based sheet, not a compound you spread. That's the whole appeal: same die-to-cooler job as paste, completely different form factor.
Application and Consistency
No syringe, no applicator, no spreading. Cut it to the size of your die, lay it flat, mount your cooler. It's genuinely one of the easier thermal interfaces to install correctly on the first try, since there's no "did I use too much or too little" question.
Electrical Safety
Here's the catch: Carbonaut conducts electricity. Unlike the non-conductive pastes that make up most of our catalog, this is a carbon sheet that behaves more like liquid metal in terms of risk, keep it away from exposed board components and don't let it overhang the die edge.
Longevity and Pump-Out Resistance
This is where pads beat paste outright. Carbonaut is reusable across multiple remounts without needing replacement, no pump-out, no drying, no reapplication schedule to track.
Comparison to Sibling Products
Against Thermal Grizzly's own KryoSheet, covered elsewhere on this site, the two are close competitors from the same brand, KryoSheet leans graphene, Carbonaut leans carbon, and reviewers are genuinely split on which wins outright. Against a paste like Kryonaut, Carbonaut wins on convenience and reusability but asks you to accept the conductive-surface risk paste doesn't carry.
Who This Pad Is Actually For
**Winner for:** anyone who wants a no-mess, reusable interface and is comfortable with a conductive material. **High-end CPU/GPU builds and console repasting where reusability across mounts matters.** **Builders who want to skip syringe application entirely.** **Not for:** First-time builders uncomfortable with a conductive material near exposed components. **Not for:** Anyone who wants a fully confirmed, brand-published conductivity number before buying.
Pending Verification
**Thermal Conductivity:** ~62.5 W/mK is commonly cited but not consistently published by Thermal Grizzly.
Specifications
| Brand | Thermal Grizzly |
|---|---|
| Model | Thermal Grizzly Carbonaut , Carbonaut |
| Compound Type | Carbon Pad |
| Thermal Conductivity | ~62.5 W/mK (commonly cited, confirm against current datasheet) |
| Electrical Conductivity | Conductive |
| Package Size | 31x25x0.2mm / 32x32x0.2mm / 38x38x0.2mm sheets |
| Recommended Use | High-end CPU/GPU (also consoles and frequent cooler remounts) |
| Reapplication Interval | Reusable across multiple mounts |
| Safety Notes | Electrically conductive; keep clear of exposed board components and do not overhang the die edge |
Expert Review
Rated by the Consumercarts editorial team, not by users
Best for
- High-end CPU/GPU builds and console repasting where reusability across mounts matters.
- Builders who want to skip syringe application entirely.
Not for
- First-time builders uncomfortable with a conductive material near exposed components.
- Anyone who wants a fully confirmed, brand-published conductivity number before buying.