For existing software, there is little to no difference. Both Sony and Microsoft are talking big about the storage subsystems of their new consoles, and how it

For existing software, there is little to no difference. Both Sony and Microsoft are talking big about the storage subsystems of their new consoles, and how it's going to enable entirely new things, such as low-latency direct requests to the flash from the GPU. for gaming in the future. This is likely to spill into the PC ecosystem during this console generation, both for games and gpu compute. Personally, I would not purchase a motherboard that didn't support PCIe 4.0 anymore, but I would not worry about getting the fastest possible drive to plug into it. The idea behind this being that I am almost certainly going to expand/replace the drive before it matters, but I'm quite likely to still be using the motherboard at that time.