NVMe SSD vs SATA SSD
Side-by-side comparison, when-to-use-each guide, and instant conversion. Reviewed for 2026.
All modern desktops and laptops (M.2 slot standard since 2017).
Older systems without M.2 slot, second SSD in cases with limited M.2 slots.
| Aspect | NVMe SSD | SATA SSD |
|---|---|---|
| Interface | PCIe (3-16 lanes) | SATA III |
| Speed cap | 14,000+ MB/s (PCIe 5) | 550 MB/s |
| Latency | Lower | Higher |
| Form factor | M.2 stick or PCIe card | 2.5" drive bay |
| Cost per TB (2026) | £60-90 | £50-70 |
Frequently asked
Do I really feel 7,000 vs 550 MB/s?
For OS boot and app launch, not really — those are small reads. For loading large game levels, video editing, mass file copying, yes — noticeable. For databases and code compilation, very noticeable.
Why are NVMe SSDs hot?
PCIe 4.0 and 5.0 NVMe drives can hit 70-80°C under sustained load. They throttle to protect themselves. A small heatsink (often built into the motherboard) keeps them at full speed.
Frequently asked questions
Do I really feel 7,000 vs 550 MB/s?
For OS boot and app launch, not really — those are small reads. For loading large game levels, video editing, mass file copying, yes — noticeable. For databases and code compilation, very noticeable.
Why are NVMe SSDs hot?
PCIe 4.0 and 5.0 NVMe drives can hit 70-80°C under sustained load. They throttle to protect themselves. A small heatsink (often built into the motherboard) keeps them at full speed.