I recently build myself a new system, containing a single 680GTX. But when I was looking at GPU-Z the other day it said this: PCi Express 2.0 x16 AT x8
The x8 makes me worry... I installed the card in the second or third Express slot (Motherboard : Gigabyte X79 UD3), I thought every slot could handle x16?
Is this something to worry about? (E.g. reduced bandwidth or something)
The primary gpu slot is usually, but not always the slot closest to the cpu.
But from gigabytes site
1) 2 x PCI Express x16 slots, running at x16 (PCIEX16_1, PCIEX16_2) * For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot. 2) 2 x PCI Express x16 slots, running at x8 (PCIEX8_1, PCIEX8_2) * The PCIEX8_2 slot shares bandwidth with the PCIEX16_2 slot. When the PCIEX8_2 slot is populated, the PCIEX16_2 slot will operate at up to x8 mode.
(All PCI Express x16 slots conform to PCI Express 3.0 standard.)