Lexar NM790 PCIe Gen 4×4 M.2 NVMe

Lexar NM790 500GB NVMe SSD – Key Features:

• Form factor: M.2 2280, interface: PCIe Gen4×4 NVMe.

• Sequential read speed: up to ~6400–7200 MB/s; sequential write up to ~2900–4400 MB/s (depending on internal config/firmware).

• Random I/O: up to ~800 000 IOPS read / ~600 000 IOPS write.

• NAND: 128‑layer TLC NAND from YMTC with Xtacking 2.0 architecture.

• HMB (Host Memory Buffer) instead of onboard DRAM — uses a small buffer in system RAM to compensate for missing DRAM cache.

• Endurance / lifespan: ~300 TBW (terabytes written) (per drive spec sheet).

• Protocol / Compatibility: PCIe 4.0 NVMe — works with modern motherboards and also supports older PCIe slots (backward‑compatible) though performance will scale accordingly.