Owner manual

ASUS P8P67 REV 3.1 2-15
Chapter 2
IRQ assignments for this motherboard
A B C D E F G H
PCIEx16_1 shared – – – – – – –
PCIEx16_2 shared – – – – – – –
PCIEx1_1 – – shared – – – – –
PCIEx1_2 – – – shared – – – –
PCI_1 – – shared – – – – –
PCI_2 – – – shared – – – –
PCI 3 shared – – – – – – –
LAN_1 – shared – – – – – –
USB 2.0 Controller 1 – – – – – – – shared
USB 2.0 Controller 2 – – – – – – – shared
USB 3.0 Controller 1 – shared – – – – – –
USB 3.0 Controller 2 shared – – – – – – –
SATA Controller – – – – shared – – –
SATA 6G Controller – – – – shared – – –
Marvell ATA Controller – – – shared – – – –
1394 Controller – shared – – – – – –
HD Audio – – – – – – shared –
• In single VGA card mode, use the PCIe 2.0 x16_1 slot (navy blue) for a PCI Express
x16 graphics card to get better performance.
• In CrossFireX™ mode, use the PCIe 2.0 x16_1 and PCIe 2.0 x16_2 slots for PCI
Express x16 graphics cards to get better performance.
• To achieve the optimum performance for CrossFireX™ mode, set the
PCI Express
X16_2 slot (black) bandwidth
BIOS item to [x4 mode]. Refer to page 3-20 for details.
• We recommend that you provide sufcient power when running CrossFireX™ mode.
Refer to page 2-28 for details.
• Connect a chassis fan to the motherboard connector labeled CHA_FAN1/2 when using
multiple graphics cards for better thermal environment. Refer to page 2-27 for details.
PCIEX16_2
conguration
PCI Express sharing mode
PCIEX16_2 PCIEX1_1 PCIEX1_2 USB3_34
Auto Mode
x1 x1 x1 x1
x4 Mode
x4 (recommend for high
speed device)
N/A N/A N/A
* Refer to Chapter 3 for details.