PCIe 2.0 X16 vs. X4 Tags: Graphics Cards Performance Crossfire HD Graphics Product Last response: May 7, 2011 1:39 PM in Graphics & Displays Share jaylim0512 May 7, 2011 12:26:57 PM I have this mother board: It has one PCIe 2.0 X 16 and one X4 slot. If I were to buy a HD 5830 and crossfire them would I see a significant drop in performance compared to two X16 slots? I read this page, but how credible is this information because they just taped off the pins to make it a X4 slot? http://www.hardocp.com/article/2010/08/25/gtx_480_sli_p... How many FPS do you think I'll get in crysis? Last question is HD 5850 or HD 5830 CrossFire? (Considering price and performance) More about : pcie x16 Maziar a c 169 U Graphics card May 7, 2011 1:39:41 PM x16x4 doesn't perform as good as dual x8 or x16 but still it's much better than single card(in terms of performance) And 2 5830's outperform one 5850 by a noticeable margin m 0 l Can't find your answer ? Ask ! Publish Related resources SolvedPCIe-2.0 x16 (x4 mode) Scaling Bandwidth Ratio Forum SolvedR9 280x Crossfire with ASUS M5A97 R2.0 (PCIe x16 / x4) Forum Solvedi have mobo with pcie 3.0 x16 the other one is 2.0 x4 Forum SolvedCrossfire on an x16 PCIE 3.0 and x4 PCIE 2.0? Forum Solvedcrossfire and sli on a pcie 3.0 x16 and pcie 2.0 x4 Forum SolvedPCIE 2.0 x16 or x4 for Crossfire? Forum SolvedPCIe 3.0 x16 and PCIe 2.0 x4 Forum SolvedCan I run two 7750s in crossfire at pcie 2.0 x16 x4? Forum SolvedWill a PCIe 2.0 x4 SSD work in a PCIe 2.0 x16 slot? Forum Solved1 x PCIe 2.0 x16 (x4 mode, black) Forum SolvedGPU at PCIE 2.0 x16 Slot running at x4! Forum PCI-E 3.0 x16 running at x4 2.0 Forum SolvedHD 7850 in PCI-E x4 vs x16 Forum PCIE 3.0 x16 + PCIE 2.0 x4 Forum PCIE x16 3.0 or PCIE x4 2.0 for NIC? Forum PCI-E 2.0 x16 @ x4 2.0 Forum What is PCIe 2.0 x16 slot operates in x4 mode? for SLI. Forum SolvedPCI-e 3 (x16 , x16, x4) vs 3 (x16/0 or x8/x8, x4) Hate it when they do this. Forum ASUS P6T PCIE 2.0 X16 (x4 at link)??? Forum SolvedPCI-E 3.0 x8, x8, x8 vs PCI-E 2.0 x16, x8, 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 !