•In single VGA card mode, use the PCIe 3.0 x16_1 slot (beige) for a PCI Express x16 graphics card to get better performance.

•In CrossFireX™ or SLI™ mode, use the PCIe 3.0 x16_1 and PCIe 3.0 x16_2 slots for PCI Express x16 graphics cards to get better performance.

•We recommend that you provide sufficient power when running CrossFireX™ or SLI™ mode. Refer to page 2-24 for details.

•Connect a chassis fan to the motherboard connector labeled CHA_FAN1/2 when using multiple graphics cards for better thermal environment. See page 2-22 for details.

PCIe x16_3 configuration
PCIE x16_3PCI Express sharing mode

 

 

ConfigurationPCIE x16_3PCIE x1_1PCIE x1_2PCIE x1_3
x1 mode

x1

x1

x1

x1

x4 mode*

x4

N/A

N/A

N/A

Refer to 3.5.6 Onboard Devices Configuration for details.

IRQ assignments for this motherboard

 

A

B

C

D

E

F

G

H

PCIEX16_1

shared

–

–

–

–

–

–

–

PCIEX16_2

shared

–

–

–

–

–

–

–

PCIEX16_3

–

shared

–

–

–

–

–

–

PCIEX1_1

–

shared

–

–

–

–

–

–

PCIEX1_2

–

–

shared

–

–

–

–

–

PCIEX1_3

–

–

–

shared

–

–

–

–

Intel SATA

–

–

–

shared

–

–

–

–

USB 2.0 #0

–

–

–

–

–

–

–

shared

USB 2.0 #1

shared

–

–

–

–

–

–

–

USB 3.0

shared

–

–

–

–

–

–

–

HD Audio

–

–

–

–

–

–

shared

–

Intel LAN

–

–

–

–

shared

–

–

–

ASM USB 3.0

shared

–

–

–

–

–

–

–

ASM1061 #0

–

–

shared

–

–

–

–

–

ASM1061 #1

–

–

–

shared

–

–

–

–

Chapter 2

ASUS SABERTOOTH Z77

2-13