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I'm not saying the device itself would negotiate a higher PCIe version. I'm saying that the 4.0 x4 M.2 NVMe slot on your mobo would map to only one 6.0 CPU lane
by Arnavion 2y ago
I'm not saying the device itself would negotiate a higher PCIe version. I'm saying that the 4.0 x4 M.2 NVMe slot on your mobo would map to only one 6.0 CPU lane.
- seritools 2y agoHuh, I was pretty sure that you need an extra chip in-between. Otherwise, the 4 CPU lanes will just drop to 4.0 level.
- Arnavion 2y agoYes you do.
- Dylan16807 2y agoYou'd need a bunch of those chips to make good use of a bunch of 6.0 lanes on the CPU, and at that point you're paying so much for the converters that I'm skeptical it would almost ever be worth it. I expect consumer machines to keep doing some conversion and expansion in the chipset, but nowhere else. I expect servers to directly attach almost everything and drop down to smaller lane counts for large numbers of devices. It's worth noting that when Kioxia first put out PCIe 5.0 EDSFF drives, they were marketing them as being optimized for 2 lanes at the higher speed.
- deleted 2y ago[deleted]