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Alphacool Subzero vs Noctua NT-H2: Comparison
Alphacool Subzero and Noctua NT-H2 separate most on thermal conductivity: Alphacool Subzero at 16 W/mK, Noctua NT-H2 at 9.0 W/mK, 44% in favour of Alphacool Subzero. They match on electrical conductivity, safety notes and paste segment.
Specs
| Specification |  |  |
|---|---|---|
| Compound Type | High-Performance Silicone-Based | Metal-Oxide (no metallic particles) |
| Brand | Alphacool | Noctua |
| Model | Alphacool Subzero , Subzero | Noctua NT-H2 , NT-H2 |
| Thermal Conductivity | 16 W/mK | 9.0 W/mK-44% |
| Electrical Conductivity | Insulating | Insulating |
| Package Size | 1g / 3.5g / 20g tubes | 1.4g / 3.5g / 10g tubes (includes cleaning wipes) |
| Recommended Use | High-end CPU/GPU (including overclocking) | Mainstream CPU/GPU, High-end CPU/GPU |
| Reapplication Interval | Verify manufacturer-rated interval | Long-term stable per Noctua testing (rated up to 5 years) |
| Safety Notes | None | None |
| Paste Segment | Standard Paste | Standard Paste |