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Alphacool Subzero vs Honeywell PTM7950: Comparison
Alphacool Subzero and Honeywell PTM7950 separate most on thermal conductivity: Alphacool Subzero at 16 W/mK, Honeywell PTM7950 at 8.5 W/mK, 47% in favour of Alphacool Subzero.
Specs
| Specification |  |  |
|---|---|---|
| Compound Type | High-Performance Silicone-Based | Phase-Change Pad |
| Brand | Alphacool | Honeywell |
| Model | Alphacool Subzero , Subzero | Honeywell PTM7950 , PTM7950 |
| Thermal Conductivity | 16 W/mK | 8.5 W/mK-47% |
| Electrical Conductivity | Insulating | Insulating |
| Package Size | 1g / 3.5g / 20g tubes | Sheet/pad cut to size (sold by area, not weight) |
| Recommended Use | High-end CPU/GPU (including overclocking) | Laptop-Thin-GPU (and builds needing reapplication-free long-term use) |
| Reapplication Interval | Verify manufacturer-rated interval | Rated for repeated thermal cycles without reapplication (~2+ years) |
| Safety Notes | None | Solid at room temperature; softens at operating temperature; different application method than paste |
| Paste Segment | Standard Paste | Pad |