Asus CROSSHAIR V FORMULA User Manual - Page 44

IRQ assignments for this motherboard

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• In single VGA card mode, use first the PCIe 2.0 x16_1 slot or PCIe 2.0 x16/ x8_3 slot for a PCI Express x16 graphics card to get better performance. • In CrossFireX™ or SLI™ mode, use the PCIe 2.0 x16_1 and PCIe 2.0 x16/ x8_3 slots for PCI Express x16 graphics cards to get better performance. • Use the PCIe x16_1, PCIe x8/x1_2, and PCIe x16/x8_3 slots for 3-Way SLI or CrossFireX™ mode. • If you install a PCIe x16 graphics card on to the PCIe x16_1 slot, a PCIe device with a bandwidth faster than x8 link to the PCIe x16/x8_3 slot, and a PCIe device with a bandwidth slower than x4 link to the PCIe x8/x1_2 slot, the three PCIe x16 slots will work at x16, x16, x1 link as the default. • If you install a PCIe x16 graphics card on to the PCIe x16_1 slot, a PCIe device with a bandwidth slower than x8 link to the PCIe x16/x8_3 slot, and a PCIe device with a bandwidth faster than x4 link to the PCIe x8/x1_2 slot, the three PCIe x16 slots will work at x16, x8, x8 link as the default. • We recommend that you provide sufficient power when running CrossFireX™ or SLI™ mode. • Connect a chassis fan to the motherboard connector labeled CHA_FAN1/2/3 when using multiple graphics cards for better thermal environment. IRQ assignments for this motherboard A B C D E F G H Intel 82583V - - - - - shared - ASM1061 - - - - shared - - - ASM1042 USB3.0_1 - - - shared - - - - ASM1042 USB3.0_2 - - shared - - - - - ASM1042 USB3.0_3 shared - - - - - - - Onchip SATA Controller - - - shared - - - - Onchip USB_1 - - shared - - - - - Onchip USB_2 - - shared - - - - - Onchip Azaliz shared - - - - - - - PCI Slot - - - - shared - - - PCIE_X16_1 shared - - - - - - - PCIE_X8/X1_2 - - - - shared - - - PCIE_X16/X8_3 shared - - - - - - PCIE_X4_4 shared - - - - - - - PCIE_X1_1 - - - - - - - shared 2-14 Chapter 2: Hardware information

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•
In single VGA card mode, use first the PCIe 2.0 x16_1 slot or PCIe 2.0 x16/
x8_3 slot for a PCI Express x16 graphics card to get better performance.
•
In CrossFireX™ or SLI™ mode, use the PCIe 2.0 x16_1 and PCIe 2.0 x16/
x8_3 slots for PCI Express x16 graphics cards to get better performance.
•
Use the PCIe x16_1, PCIe x8/x1_2, and PCIe x16/x8_3 slots for 3-Way SLI
or CrossFireX™ mode.
•
If you install a PCIe x16 graphics card on to the PCIe x16_1 slot, a PCIe
device with a bandwidth faster than x8 link to the PCIe x16/x8_3 slot, and a
PCIe device with a bandwidth slower than x4 link to the PCIe x8/x1_2 slot,
the three PCIe x16 slots will work at x16, x16, x1 link as the default.
•
If you install a PCIe x16 graphics card on to the PCIe x16_1 slot, a PCIe
device with a bandwidth slower than x8 link to the PCIe x16/x8_3 slot, and
a PCIe device with a bandwidth faster than x4 link to the PCIe x8/x1_2 slot,
the three PCIe x16 slots will work at x16, x8, x8 link as the default.
•
We recommend that you provide sufficient power when running
CrossFireX™ or SLI™ mode.
•
Connect a chassis fan to the motherboard connector labeled
CHA_FAN1/2/3 when using multiple graphics cards for better thermal
environment.
IRQ assignments for this motherboard
A
B
C
D
E
F
G
H
Intel 82583V
–
–
–
–
–
shared
–
ASM1061
–
–
–
–
shared
–
–
–
ASM1042 USB3.0_1
–
–
–
shared
–
–
–
–
ASM1042 USB3.0_2
–
–
shared
–
–
–
–
–
ASM1042 USB3.0_3
shared
–
–
–
–
–
–
–
Onchip SATA Controller
–
–
–
shared
–
–
–
–
Onchip USB_1
–
–
shared
–
–
–
–
–
Onchip USB_2
–
–
shared
–
–
–
–
–
Onchip Azaliz
shared
–
–
–
–
–
–
–
PCI Slot
–
–
–
–
shared
–
–
–
PCIE_X16_1
shared
–
–
–
–
–
–
–
PCIE_X8/X1_2
–
–
–
–
shared
–
–
–
PCIE_X16/X8_3
shared
–
–
–
–
–
–
PCIE_X4_4
shared
–
–
–
–
–
–
–
PCIE_X1_1
–
–
–
–
–
–
–
shared
2-14
Chapter 2: Hardware information