| Drive | Safe | Max |
|---|---|---|
| NVMe Desktop | ≤55°C | 80°C |
| NVMe Laptop | ≤58°C | 85°C |
| SATA SSD | ≤45°C | 70°C |
Use the Temp Check tab to check SSD temperature, or the Lifespan tab to estimate drive endurance.
TBW (Terabytes Written) is the manufacturer's rated write endurance. A 1TB Samsung 870 EVO is rated for 600 TBW - but in practice SSDs regularly write 2–5× their rated TBW before failing.
Light users (web, office): ~2–3 GB/day. Regular gamers: ~5–10 GB/day. Video editors or developers: 20–50 GB/day. Data from CrystalDiskInfo ÷ drive age gives your real average.
NVMe drives run 10–20°C hotter than SATA SSDs due to the PCIe interface. A 55°C NVMe is healthy; that same reading on a SATA drive is elevated and worth investigating.
QLC NAND stores 4 bits per cell vs TLC's 3 - it's cheaper but has lower write endurance. For a boot/game drive written heavily every day, TLC is the better long-term choice.