disksNVMe vs SATA vs M.2: SSD interfaces explained
SSD shopping throws three confusing words at you — NVMe, SATA and M.2. Two describe how the drive talks to your PC; one describes its shape. Here's the plain-English version.
SATA vs NVMe — the speed bit
SATA is the older connection, originally designed for hard drives, and it caps out around 550 MB/s. NVMe drives talk to the CPU directly over PCI Express and run many times faster — 3,500 MB/s is typical, and the latest can exceed 7,000 MB/s. For everyday use both feel instant; the gap shows when copying huge files, editing video, or loading large games.
M.2 is a shape, not a speed
M.2 is the small gum-stick form factor that plugs straight into the motherboard. Confusingly, an M.2 SSD can be either SATA or NVMe — so check the listing. A 2.5" SSD is always SATA. If your motherboard has a spare M.2 slot, an NVMe drive there is the cleanest, fastest upgrade.