Asus M4A79 DELUXE User Manual - Page 40
Primary PCI Express x16 slots, Universal PCI Express x16 slots max. x8 mode - specifications
UPC - 610839168910
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Chapter 2 Primary PCI Express x16 slots The primary PCI Express x16 slots support PCI Express x16 graphics cards that comply with the PCI Express specifications. Universal PCI Express x16 slots (max. x8 mode) This motherboard also supports universal PCI Express x16 slots with a maximum speed of 8 GB/s. The operating frequency of this slot changes, depending on the type of PCI Express card you install. Refer to the table below for details. If you install multiple graphics cards, we recommend that you plug the rear chassis fan cable to the motherboard connector labeled CHA_FAN1/2 for better thermal environment. See page 2-33 for the connector location. VGA configuration Single VGA/PCIe card Dual VGA/PCIe card Triple VGA/PCIe card Quad VGA card PCIex16_1 (Blue) x16 x16 x16 x8 x8 PCI Express operating mode PCIex16_2 (Black) PCIex16_3 (Blue) PCIex16_4 (Black) x1 x16 x1 x1 x16 x1 x1 x8 x8 x8 x16 x1 x8 x8 x8 • When using one graphics card and a x4 PCIe card at the same time, install them to the blue slots. • When using two graphics card, install them to the blue slots. • If you install two graphics cards to the blue slots and use other x4 PCIe cards simultaneously, the x4 PCIe cards will downgrade to x1 mode for optimum VGA performance. You may reassign PCIe width in BIOS settings. Refer to page 3-21 for details. 2-20 Chapter 2: Hardware information