Hi all, right I have 2 7850's on a P8Z77-M pro motherboard my problem is they wont run @8x8.... for some reason its only 8x1, but if I change the second card to the pci-e slot 3 i get 16x4, why wont it run in 8x8? Iv checked and updated the bios, reinstalled the drivers etc, even in the bios it says its running @8x8, but in gpu-z it says x1 for the second card and Iv tested it and it runs like c***, changed to 16x4 and you can tell the diffrence :bang: Any ideas?? Thanks for any help...
You can tell GPUz to start a render test to see the lane speeds change My board needs slots 1 and 3 for x16 x16, if I use 1 and 2, it runs at x16 x8
Cheers for the help! just checked that test and its still x8 2.0 and x1 2.0, its weird coz if i turn off crossfire and restart they both show x8, then as soon as i enable it it switches the second card to x1 then wont go back till after a restart even if i disable crossfire, really wierd...
Its sorted, i have no idea how it just sorted itself, mite have been some sort of wierdness in the bios or something, cheers anyway!