PCIe 3.0 Riser Cable on a 3080

[aelc89]

Morning all, quick question.

I have an old Pcie 3.0 riser cable I was using to mount my old 2070. Would it be good to use the same cable for my 3080 or do I need to get a 4.0 riser?

 

[namd3]

You should be good!

 

[Chuk_Chuk]

If your MB is PCIE 4.0 there may be some issues. I think LTT talked about it in a video

 

[Rroff]

If your MB is PCIE 4.0 there may be some issues. I think LTT talked about it in a video

IIRC PCI-e 4.0 will be a little more susceptible to cable quality and length than PCI-e 3. If it is a fairly short cable probably no issues.

 

[PrincessFrosty]

Any difference between PCI-e 3.0 and PCI-e 4.0 will be within margin of error. Tests on PCI-e bottlenecks over the years have shown there is basically no difference even when comparing 8x to 16x on PCI-e 3.0, these cards simply don't transfer that much data over PCI-e.

 

[Demon]

It wouldn't harm getting a PCI-E 4.0 Riser anyway, even if only running it at PCI-E 3.0 , the newer cards will be maxing out the bandwidth on a PCI-E 3.0 and you don't want it getting issues.. This happened with my Titan Xp, my old riser which worked fine for a GTX970 kept BSOD'ing on the Titan, changing to a better PCI-E cable stopped that happening, so I've just installed a better quality PCI-E 4.0 compliant riser cable for the same reason, I don't want the riser cable being a problem when the bandwidth is suddenly pushed by a 3080.

 

[1nfern0]

I had an issue with my 3090 when I tried using my existing riser. The Motherboard was set to PCIE4 on the Lane due to my NVME drive. I could get the PC to post at all with the riser connected until I went direct to the slot, booted and changed the bios to PCIE3.
Still waiting for a PCIE riser before changing back.

 

[redkrptonite]

What models of riser cable support pcie4? I can only find one and I’ve never heard of that brand before.