One of the major issues with M.2 based NVMe SSDs today is the excessive heat they output, part of the reason most of them run so hot is because of the older fabrication node they're made on. Most current PCIe 4.0 NVMe SSD controllers are built on a 12 nm node of some kind, but based on data out of IT Home in the PRC, we now have details of Silicon Motion's SM2504XT PCIe 5.0 NVMe SSD controller, which appears to be one of the first, if not the first, to be made on a 7 nm node.

Although it's not mentioned specifically who Silicon Motion's manufacturing partner is, it's most likely going to be TSMC, as Silicon Motion is a Taiwanese company. The SM2504XT will be a mainstream 4-channel controller, but it'll support NAND flash rated at up to 3600 MT/s, which is a step up from any other currently announced NVMe SSD controller. It also supports the NVMe 2.0 protocol and will have a PCIe 5.0 x4 host system interface. The new controller is expected to have hit the engineering sample stage some time in September this year.