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2-22 Chapter 2: Hardware information
• In single VGA card mode, use rst the PCIe 2.0 x16_1 slot (blue) for a PCI
Express x16 graphics card to get better performance.
• In CrossFireX™ mode, use the PCIe 2.0 x16_1 (blue) and PCIe 2.0 x16_3
(white) slots for PCI Express x16 graphics cards to get better performance.
• Use the two PCIe 2.0 x16 slots and the two PCIe x16 slots for Quad
CrossFireX™ mode.
• We recommend that you provide sufcient power when running
CrossFireX™ mode. See page 2-37 for details.
• Connect a chassis fan to the motherboard connector labeled
CHA_FAN1/2/3 when using multiple graphics cards for better thermal
environment. See page 2-34 for details.
VGA conguration
PCI Express operating mode
PCIex16_1 PCIex16_2 PCIex16_3 PCIex16_4
Single VGA/PCIe card
x16 x4 x8 x4
Dual VGA/PCIe card
x16 x4 x8 x4
Triple VGA/PCIe card
x8 x4 x8 x4
Quad VGA card
x8 x4 x8 x4
PCI1 slot
PCIe 2.0 x16_1 slot (blue)
PCIe x16_4 slot (black, at max. x4 link)
PCI2 slot
PCIe 2.0 x16_3 slot (white, at max. x8 link)
PCIe x1_1 slot
PCIe x16_2 slot (black, at max. x4 link)