PCIe 2.0 x8 X x8 vs . PCIe 1.1 x16 X x16 Tags: Radeon Graphics Last response: April 15, 2009 12:02 AM in Graphics & Displays Share gonnitendo April 14, 2009 10:35:15 PM I was wondering whether pcie 2.0 x8/x8 is any slower than pcie 1.1 x16/x16. pcie 2.0 is supposed to have double the bandwidth of pcie1.1. How would this effect the performance of 2 HD 4850s in CF? Asrock a780gxe/128m mobo 4 gb gskill ram AMD Phenom II 920 @3.29 ghz (air) 4850 (512 mb, soon to be crossfired) More about : pcie pcie x16 x16 pinaplex April 14, 2009 11:47:52 PM with all the cards out right now, the difference in performance between PCIe 2.0 and 1.1 is negligible. And also, the difference between running CF/SLI at x8/x8 and x16/x16 is also very minute, and doesn't make a noticeable difference. megamanx00 April 15, 2009 12:00:48 AM Basically you'd be getting the same bandwidth. There may be small (and I mean very small) differences due to latencies, but not a whole lot. Can't find your answer ? Ask ! Get the answer gonnitendo April 15, 2009 12:02:40 AM Thanks! Can't find your answer ? Ask ! Publish Related resources SolvedPCI-E 3.0 x8, x8, x8 vs PCI-E 2.0 x16, x8, x8? Forum PCIe 1.1 electrical x8 vs x16 Forum Solvedpci-e 3.0 x16 unning at pci-e 2.0 x8? Forum pcie 2.0 x8 to pcie 3.0 x16 Forum Graphics Card Drops from x16 to x8 (AMD = PCI-E 2.0) when cpu overclocked. Forum SolvedPCIe x8 vs. x16 Forum PCIe 3.0 x8 card in PCIe 2.0 x16 slot: will it run in PCIe 2.0 x8 or x16 mode? Forum SolvedPci-e x16 2.0 @ x8? Forum Solvedpcie x8 vs x16 Forum Whats faster... SLi: (TWO) BFG 8800 Ultra Over Clocks (PCI-e x16) or SLi: (TWO) THE FASTEST PCI-e x16 2.0 (@ x8 bandwidth) Forum Pci-e 2.0 x16 @ x8 2.0 Forum Will next gen GPUs saturate pcie 2.0 x16 or x8 lanes? Forum PCI-E 2.0 x16 In Use @ x8 Forum Will pci-e 2.0 @2 times x16 lane cf/sli be faster than x8 mode 2.0 Forum Single GTX285 working @ x8 in x16 PCI-e 2.0 Forum Help PCIE 2.0 x8 only instead of x16 Forum SolvedCrossfire with PCIe x8 vs x16 Forum 2- GTX 770 @ X8 PCIe vs. 1-GTX 780ti @ X16 PCIe Forum 2 x16 pcie vs 2 x8 pcie Forum EVGA GeForce GTX 680 2GB PCI-E x16 vs. x8 Forum More resources Read discussions in other Graphics & Displays categories Ati GPUs Graphics Cards Gtx HD Monitors SLI Crossfire Tuner Cards Radeon Video Diamond Multimedia Matrox Nvidia Palit PowerColor Asus Games !