PCI x16 and x4 crossfire Tags: Graphics Cards PCI AMD Crossfire Graphics Product Last response: December 2, 2010 1:51 PM in Graphics & Displays Share fugben December 2, 2010 1:38:54 PM I guys i have a radeon 6870, phenom 2 1090T and this motherboard: MSI 870-G45 AM3 AMD 770 ATX AMD Motherboard http://www.newegg.com/Product/Product.aspx?Item=N82E168... It has 2 PCI 2.0 slots but one is 16 x and the other is 4x I am looking to add another 6870 for crossfire. Would the 4x bottleneck badly? More about : pci x16 crossfire Maziar a c 169 U Graphics card December 2, 2010 1:51:28 PM For PCI-E 1.0 cards, x4 will definitely hurt the performance but for PCI-E 2.0 cards, there isn't much of a difference between x16x4 and dual x16/x8 speed. Can't find your answer ? Ask ! Publish Related resources Solved7870 crossfire in pci x16 and x4 and Performance loss Forum SolvedCrossfire HD 7950 at PCI 3.0 x/16 - /x4 Forum SolvedCrossfire PCI 2.0 x16 x4 GIGABYTE GA-970A-UD3 7950 bottleneck Forum SolvedCrossfire with x16 and x4 pci-e slots? Forum SolvedCrossfiring on PCI 3.0 X16 and PCI 3.0 X4? Forum SolvedI need help understanding PCI-E x16, x8, x4 and x1 Forum SolvedR9 280x Crossfire with ASUS M5A97 R2.0 (PCIe x16 / x4) Forum SolvedPCI-E 3.0 x16 running at x4 2.0 Forum SolvedMini-ITX PCI Express X16 to X4 Adapter Forum SolvedWhich graphics card to be used in PCI-e x16 @x4 ? Forum SolvedHD 7850 in PCI-E x4 vs x16 Forum SolvedWondering about crossfire setup on New Z87-WS w/ dual x16 pci express option and cpu compatibility. Forum SolvedWill this graphic card work the same in the PCI Express 2.0 x16 1(running at x4) slot? Forum SolvedIs crossfire worth it with my setup? 1x X16 1x X16 in X4 Mode Forum SolvedPCI-E x16 / PCI-E x4 & GPU Questions Forum SolvedASRock 970 Extreme4 Crossfire (PCIe x16, x8, x4?!) Forum Solvedx16 x4 CrossFire with diff cards Forum SolvedCrossfire on an x16 PCIE 3.0 and x4 PCIE 2.0? Forum SolvedPCI Express Cards? x1 x4 x8 x16 Forum SolvedTried Moving GPU from PCI-Express x4 to x16, now i get black screen. 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 !