Oh yeah I'd go with another SSD drive. I've never heard of NVME. I'll look into that.
You just need to make sure your motherboard supports M.2 drives.
It does. I need to look into the benefits & cost of a M.2 drive before I decide.
m.2 drives are handy in that they don't need separate cables for power and data connection. They hook straight to the board. You have generally two types of m.2 drives that are SSDS - NVME and SATA. Main difference is the transfer speed. SATA is capped around 600 MB/s. NVME on the other hand go much much faster. The current gen of NVME is PCIe 4.0 and you get SSDs that are around 7000 MB/s. However most 4.0 SSDs are expensive and become hot quite easily. NVME SSDs that are PCIe 3.0 have become much cheaper and are almost the same price as SATA SSDs.
Keep in mind though for games which type of SSD you get is almost meaningless, there is no visible benefit when loading from a SATA SSD, NVME PCIe 3.0 SSD or NVME PCIe 4.0 SSD. The difference you feel and get is when comparing regular HDDs vs SSDS (any type).
This comes from not just reading about it but personal experience. I've used all those types of drives as my main OS drive and made notes of the differences, like loading time, etc...