There is a benefit to using 2.5 ssds over nmve even though they are much slower.I know I said I like nvme, but in practicality, in terms of gaming usage, there really isn't much benefit from me over even SATA SSD for gaming. However, nvme prices are just getting slashed and price gaps are narrowing between SSD interface types, it's just that the newest gen is going to be higher. gen3 and sata ssds are probably close enough that it makes sense for me to go gen3 nvme for my usage (don't needs the highest pcie speeds). I don't do a lot of w/r (I don't see doing much rewrites), but just mainly read for gaming, so gen3 is more that enough speed for my usage, even SATA is sufficient. I was considering Samsung QVO due to it's availability in 8TB and the cheapest price for 8TB, and I will only be concerned about read speed, and want the 8TB capacity, but still not sure if the performance is not much difference from it and other SATA SSDs for gaming (for reads only). Anybody have insights on this, let me know.
In terms of speeds, I believe they cap out about 500 mb/s but the main benefit of the 2.5 ssds is for storing music files.
You can place them away from the motherboard and reduce amount of noise injection somewhat from the mobo and other pc components.
While its still going to be exposed to some level of noise injection, it will be much less than something like an nvme drive where its attached to the motherboard.