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Overview of Components
PCI_E1
PCI_E1
PCI_E4
PCI_E1~5: PCIe Expansion Slots
PCI_E1: PCIe 3.0 x16 (CPU lanes)
PCI_E2: PCIe 3.0 x4 (CPU lanes)
PCI_E3: PCIe 3.0 x1 (PCH lanes)
PCI_E4: PCIe 3.0 x8 (CPU lanes)
PCI_E5: PCIe 3.0 x4 (PCH lanes)
Multiple graphics cards installation recommendation
Graphics Card Single 2-Way 3-Way* 4-Way*
PCI_E1 @ 3.0 x16 @ 3.0 x8 @ 3.0 x8 @ 3.0 x8
PCI_E2 Empty Empty Empty @ 3.0 x4
PCI_E3 3.0 x1 3.0 x1 3.0 x1 3.0 x1
PCI_E4 Empty @ 3.0 x8 @ 3.0 x8 @3.0 x4
PCI_E5 3.0 x4 3.0 x4 @ 3.0 x4 @3.0 x4
(@: graphics card slot, *: CrossFire only)