Yea that's a question I am looking for an answer for. But how much faster is a PCIe3 vs PCIe4 NVME?
I would have thought the whole point of this technology is to get the most out of what is available and avoid the IO bottleneck.
I have a 970 Evo nvme which is fast. I cant imagine it's not 'fast enough'.
PCIe 4.0 can be much faster, especially once they get new controllers out (7 GB/s expected (vs 5 GB/s 3.0 4x maximum)), but really the question is 'how fast does it need to be?' because it's not like you can use faster storage for anything more once you get to a certain point, unlike GPU (where you can always push more frames/higher res). After all, the XSX SSD is only like 2.5 GB/s.