BIOS pci e x2/x4??

[Gvgd94]

hello all

i have an asus p8z77le plus pro mobo and in the bios i can select pci e x2 and x4? which one should i choose? i have one gtx660 and an i5 3570k

 

[unksol]

Page 3-23 of you manual. I suggest you learn to use it. This mode only affects the 3rd x16 slot. In x2 mode it has two channels. In x4 mode it has 4 and the two x1 slots are disabled. It has no affect on the first two gpu slots and is irrelevant for what you're doing.