P55 and shared PCI-E Tags: Chipsets Bandwidth Graphics Cards Devices Motherboards PCI Express Last response: July 5, 2010 8:20 PM in Motherboards Share jimini24 July 5, 2010 7:51:22 PM Hi I don't understand that point : On most P55 motherboard, you find 2 PCI-E x16 slot when used with 2 Graphics cards, you run at x8/x8 on each slot what's appening if you have only one graphic card and one PCI-E device is pluged on the 8xPCI-E slot ? for example, you get this : http://usa.asus.com/product.aspx?P_ID=lGYmelQ8mJvPtYTv&templete=2 this device need Hi bandwidth , at least PCI-E x4 so is your system running at 8x/8x or 12x/4x ? (the device takes what he needs or the motherboard share the PCI-E x16 in x8/x8, with no regards of the device's bandwidth connected?) you can do the same with a PCIE x1 device pluged on 8x PCI Device do you have a system running et x15/x1 or x8/x8 anyway? ( so the graphics card is limited and the device has more bandwidth he needs) thanks for answers or sorry for english mistakes, it's not my native language More about : p55 shared pci GhislainG a b U Graphics card a c 234 V Motherboard July 5, 2010 8:20:35 PM It should run at x8-x8, but that isn't an issue except for the most powerful GPU that could lose a bit of performance. Can't find your answer ? Ask ! Publish Related resources Lynnfield to Haswell, P55 to Z87, PCI-E from 2.0 to 3.0 etc...difference? Forum Both PCI and PCI-E cards on P55 mobo? Forum P55 and PCI-E limits Forum P55 & 2 16x pci-e lanes? Forum SolvedPopulating shared pci-e 16/8 slots? Forum PCI, PCI-E and PCI-X shared bus Forum SolvedPCIe Lane Sharing with 1.0 x1 Card Forum Why will proposed 2 PCIE x16 M/B's share one x16ch Forum More resources Read discussions in other Motherboards categories BIOS Boot Chipsets ASRock Asus Chaintech DFI Elitegroup FIC Foxconn Gigabyte Intel MSI-Microstar !