What could cause a GTX 970 G1 to run at PCIe x8 on any motherboard?

Maxxtraxx · February 16, 2016

2 minutes ago, Dabombinable said:

The Gen 2.0 lanes run from the chipset, the top slot is the only one that uses lanes from the CPU, and as a result runs at x16, though only with my GTX 650ti plugged in.

Gen 2.0 lanes are through the chipset, but, there are other peripherals that use pci-e 3.0 lanes. I'm assuming by your comment that that implies you have no other devices using pcie 3.0 lanes.

HOWEVER, regardless of whether the card is operating at 16x or 8x

with PCI-E 3.0... it will NOT affect GPU performance

remember, in SLI or X-fire the GPU's operate at 8x with NO reduction in performance. PCI-e 3.0 at 8x simply has more bandwidth than a GPU needs to communicate with the CPU.

Dabombinable · February 16, 2016

7 minutes ago, NumLock21 said:

Your going to use that board just to see if it's your card that has the problem or is it gpu-z that's derping and not give you the correct info. Looks something like this in the bios

7 minutes ago, Maxxtraxx said:

He's saying to NOT use gpu-z to detect the pci-e lanes, but instead checking the pci-e setup in the BIOS.

Motherboard reports it as being at x8 as well (H87M Pro)

Dabombinable · February 16, 2016

Just now, Maxxtraxx said:

Gen 2.0 lanes are through the chipset, but, there are other peripherals that use pci-e 3.0 lanes. I'm assuming by your comment that that implies you have no other devices using pcie 3.0 lanes.

HOWEVER, regardless of whether the card is operating at 16x or 8x

with PCI-E 3.0... it will NOT affect GPU performance

remember, in SLI or X-fire the GPU's operate at 8x with NO reduction in performance. PCI-e 3.0 at 8x simply has more bandwidth than a GPU needs to communicate with the CPU.

Its just annoying that's all and another problem that I want to sort out or at least find the cause of.

Maxxtraxx · February 16, 2016

2 minutes ago, Dabombinable said:

Its just annoying that's all and another problem that I want to sort out or at least find the cause of.

100% agreed, I would be incredibly annoyed by the problem as well. I am however, out of ideas at the moment. Sorry.

NumLock21 · February 16, 2016

39 minutes ago, Dabombinable said:

Motherboard reports it as being at x8 as well (H87M Pro)

I doubt Gigabyte will limit the gpu to x8, but they did with some of their low-end gpus. Your only option right now, if you can is to borrow a GTX 970 from your friend and see if it's still reports it at x8.