Samsung 990 EVO NVMe M.2 SSD, Up to 5,000MB/s Read, PCIe 5.0, 1TB–2TB

The dual-mode interface is the unusual part: it negotiates PCIe 5.0 across two lanes or PCIe 4.0 across four, whichever the socket offers, for much the same bandwidth either way. That makes it adaptable in lane-starved laptops and mini PCs.

It is DRAM-less, relying on host memory. For heavier sustained work in the same bracket, Samsung 990 EVO Plus NVMe M.2 SSD PCIe 4.0 x4 / PCIe 5.0 x2 raises the rated figures.