Transcend Gaming NVMe M.2 SSD with Heatsink, Up to 7,400MB/s Read, PCIe 4.0, 1TB–2TB

A graphene heatsink rather than a metal block, which keeps the whole card at 2.42mm — slim enough for the PlayStation 5 bay and for laptops that a finned cooler would rule out entirely.

It is DRAM-less, working from 64MB of host memory buffer, trading some sustained-write consistency for lower cost and heat against the Transcend 250H PCIe 4.0 x4 M.2 Internal SSD with Heat Sink M.2, which carries a DRAM chip.