NVMe SSDs, ranked by cost per terabyte

An NVMe SSD is solid-state storage that talks to the CPU over PCIe lanes instead of the legacy SATA bus, unlocking many times the bandwidth and far lower latency. In the M.2 ‘gum-stick’ form factor it installs flush on the motherboard with a single screw and no cables, which is why NVMe has become the default boot and working drive for new laptops, desktops and consoles. Real-world sequential speeds range from around 3,500 MB/s on PCIe Gen 3 to well past 7,000 MB/s on Gen 4 and over 12,000 MB/s on the newest Gen 5 drives.

For everyday computing the difference between NVMe generations is mostly invisible — what you feel is the leap from a hard drive or SATA SSD to any NVMe. The faster generations earn their keep in specific jobs: moving large video files, loading big game levels with DirectStorage, running databases, or working with high-resolution editing scratch. NVMe used to command a steep premium, but mainstream Gen 4 drives now sit close to SATA on cost per terabyte, so for any machine with an M.2 PCIe slot, NVMe is usually the smarter buy. Compare value by capacity, PCIe generation, DRAM cache, NAND type and sustained (not just peak) write speed — cheap QLC drives can slow sharply once their cache fills.

PCIe Gen 3 vs Gen 4 vs Gen 5

NVMe drives are sold by PCIe generation, which sets their maximum bandwidth. Higher generations are faster and run hotter; a drive will fall back to the slower of the drive and the slot it’s in. Match the drive to what your motherboard actually supports.

For most builds, a quality Gen 4 drive is the value sweet spot — vastly faster than SATA, far cheaper than Gen 5, and cool enough without exotic cooling. Reserve Gen 5 for workloads that genuinely move huge files. See NVMe vs SATA and our gaming storage guide.