my 7900GT is running at x8 in a x16 slot ??? Tags: Graphics Cards Asus SLI Overclocking Last response: August 1, 2006 6:36 AM in Overclocking Share xkwizt July 29, 2006 8:39:37 AM asus a8n sli deluxe 2 x PCI Express x16 slot *SLI mode : x8 , x8 *Default(Single VGA) mode : x16, x1 dfi infinity sli in SLI mode the bandwidth of each x16 slot operates at x8. when the graphics cards are connected by the bridge it runs at 16x. on asus 1 card = x16 2 card = x8 EACH on dfi 1 card = x8 2 card = 16x each or am i just stupid. lol. More about : 7900gt running x16 slot xkwizt July 31, 2006 8:09:03 AM read my post again. with NO sli bridge it runs at 8x. with it they both run at x16, but why is mine running at x8 when im only running 1 card? on the asus it says it will run at x16 with 1 card. also could this be hurting the performance of my card. im only getting 3900 on 3dmark. others are getting 4000 and 4100. with almost the same specs as my computer. PaCanc July 31, 2006 10:24:35 AM Just a thought. Maybe you should try the video card in the other PCI-e 16x slot. Related resources 7950 pcie slot running at x8 instead of x16 - Forum PCI-E x16 slot only running at x8 - Forum What does it mean that a "PCI-Express 3.0 X16 Slot runs at X8"? - Forum PCIE x16 slot running at x8 why? - Forum Will PCI-Express x16 slot (running at x8) handle a graphic card? - Forum Can't find your answer ? Ask ! Get the answer chuckshissle July 31, 2006 11:44:48 AM Don't worry about it for mobos with 2x16 and 2x8 bandwiths don't have of big difference in real gaming applications. darkstar782 August 1, 2006 6:36:11 AM Thats just a lie, the bridge connector does not and cannot give the chipset more availible PCI-E lanes to split between the two slots. It can reduce the PCI-E bandwidth needed as without it data needs to be sent over the PCI-E bus between cards. In practice the difference between 2* PCI-Ex16 slots and 2* PCI-Ex8 slots is negligible, under 5% at worst, and wouldnt be the reason for the lower 3dmark scores you describe. Can't find your answer ? Ask ! Publish Related resources PCIe 3.0 x8 card in PCIe 2.0 x16 slot: will it run in PCIe 2.0 x8 or x16 mode? Forum Does a Dual GPU run at x8 or x16 When Inserted In PCI-E Black Slot? Forum PCI-E runs x8 in x16 slot Forum SolvedCan I put an x8 RAID controller into an x16 PCIe slot? Forum SolvedCan a PCI X8 controller card be used in a PCI X16 slot? Forum SolvedWill pci express 3.0 x16 card work in pci 2.0 x8 slot Forum Solved2x GTX 670 running on PCI 2.0 x8 - Will PCI 3.0 at x8 or x16 improve performance? Forum SolvedPCIe x16 card running at only x8 (non SLI) Forum SolvedAsrock z77 extreme 4-m pci-e running at x8 not x16? Forum x8 pcie card in a x16 pcie slot ? Forum Can we insert a x16 graphics card into a x8 slot ? Forum x8 secondary PCI-E slot = x16 x8 or x8 x8 SLI config? Forum GPU not operating in PCIe x8 slot, works in x16 Forum Solved1st 2-pci slots (x16 by x16) vs 1st&3rd (x8 by x8) Forum PCIe x16 running at x8 Forum More resources Read discussions in other Overclocking categories CPUs Motherboards Memory Chipsets Heatsinks Water Cooling Intel AMD !