Asus P5W User Manual - Page 51
PCI Express x16 slot configurations
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• We recommend that you install a graphics card on the primary (orange) PCI Express slot and install other PCI Express devices on the black PCI Express x16 slot. • In CrossFire™ mode, each PCI Express x16 slot works at x8 bandwidth. • In CrossFire™ mode, install the ATI CrossFire™ Edition (Master) graphics card on the primary (orange) PCI Express slot. • Refer to the table below for possible PCI Express Card configurations. PCI Express x16 slot configurations Non-CrossFire™ mode PCIEX16_1 (orange) slot Card type Speed PCIe x16 graphics card x16 PCIe x16 graphics card x8 PCIe x16 graphics card x8 PCIEX16_2 (black) slot Card type Speed NA NA Other PCIe x16 graphics card x8** (dual screen) Other PCIe card x8, x4, x1** Dual ATI® CrossFire™ Edition x8 ATI graphics card x8 graphics cards graphics card in CrossFire™ mode* * Install two ATI graphics cards from the same GPU family that support CrossFire™ mode. ** The speed of the primary PCIe x16 slot (PCIEX16_1) changes to x8 mode after you install any device in the secondary PCIe x16 (PCIEX16_2) slot. ASUS P5W 2-25