8x Pcie 3.0 - To Gen 4 M2 card adapter

BS Dave · 11 Jun 2020 at 14:55

Does anyone make one of these? i have a spare 8x slot i could use for a gen 4 M2 drive, but i can't seem to find one anywhere. Do any of you know of one?

MrRockliffe · 11 Jun 2020 at 14:56

Not sure if it’s possible as the CPU would need to support PCIe Gen 4 interface

BS Dave · 11 Jun 2020 at 16:12

Ok so the lanes/bandwidth isn’t the only obstacle.

d_brennen · 11 Jun 2020 at 16:21

Gen 4 m.2 would probably* work in a regular PCIe to m.2 add-in card, just at 3.0 speeds.

*Haven't tried, 3.0 cards work fine though

BS Dave · 11 Jun 2020 at 16:29

That’s why I wondered about it being in the x8 x3 Lane It would be the same as 4x4 Lane

EsaT · 11 Jun 2020 at 18:21

While bandwidth is same converting x8 PCIe v3 to x4 PCIe v4 would need active "bridge/converter" chip.

Anyway unless doing something really heavy PCIe v4 NVMes are really paying for no real difference.

pugheaven · 12 Jun 2020 at 00:32

d_brennen said:
Gen 4 m.2 would probably* work in a regular PCIe to m.2 add-in card, just at 3.0 speeds.

*Haven't tried, 3.0 cards work fine though

yes, I've got the ASROCK 4xNMVe PCIE3.0 adaptor running Sabrent Rocket PCI4.0 NMVe drives (5500mb/s), but they max at 3500MB/S which is fine due to the PCIE3.0 slot.