Closed X8 vs x16? Tags: Radeon Performance Graphics Last response: August 29, 2010 4:51 PM in Graphics & Displays Share deathofzero August 18, 2010 5:29:15 AM On this jetway mobo I have, the north bridge is a 790GX. I mean, it's a pretty awesome north bridge if you ask me, but..... Since I have two PCIe x16 lanes, when I run CrossFireX they will both be x8. How much of a performance hit will this be? More about : x16 Best solution hunter315 August 18, 2010 5:36:37 AM Not much, here are two nice little charts to sum it up for you and show SLI and CF scaling. This one is using 2 5850s, its from their release review so scaling may have changed a bit since but probably not too much. Share deathofzero August 18, 2010 5:43:09 AM Thanks! I didn't realize how fast people would be on this forum, lol. I was planning on some 4850's in CF, so this helps a lot! I was actually expecting a pretty severe decrease... Score 0 Related resources PCIe x8 vs. x16 - Forum pcie x8 vs x16 - Forum 1st 2-pci slots (x16 by x16) vs 1st&3rd (x8 by x8) - Forum x16 + x4 vs x16 + x8 - Forum PCI-E 3.0 x8, x8, x8 vs PCI-E 2.0 x16, x8, x8? - Forum Can't find your answer ? Ask ! Get the answer sl83r August 19, 2010 4:13:53 PM I've got a pair of 4890's in x8/x8 mode and the performance is very very good. Most high end GPUs are so powerful that putting them into an x8/x8 config as opposed to an x16/x16 config=very little to no loss, as the charts have shown. Score 0 deathofzero August 29, 2010 4:45:59 PM Best answer selected by DeathOfZero. Score 0 Mousemonkey August 29, 2010 4:51:44 PM This topic has been closed by Mousemonkey Score 0 Can't find your answer ? Ask ! Publish Related resources SolvedNVIDIA GTX 670 PCI Express 2.0 scaling on x16 vs x8 Forum x8 x8 Vs x16 x16. Forum SolvedX16 vs dual x8? Forum SolvedDual x8 vs x16 Forum SolvedPCI Express X8 VS 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 7970 X2 (OC) PCIE 3.0 X8 VS X16 Forum PCI-E 3.0 x16 vs x8 Forum New Mobo for x8 or x16 CF VS new single GPU? Forum X16 x8 x8 vs x8 x8 x4 Forum PCI Express 2.0 x16 vs PCi Express 2.0 x8 Forum X16 vs x8 slots 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 !