Asus P8H77-M - Manual (Page 38)

1-26 Chapter 1: Product introduction
• PCIe 3.0 support depends on CPU type and requires PCIe 3.0 VGA card.
• In single VGA card mode, use the PCIe 3.0/2.0 x16_1 slot (blue) for a PCI Express x16
graphics card to get better performance.
• In CrossFireX™ mode, use the PCIe 3.0/2.0 x16_1 and PCIe 2.0 x16_2 slots for PCI
Express x16 graphics cards to get better performance.
• We recommend that you provide sufficient power when running CrossFireX™ mode.
• Connect a chassis fan to the motherboard connector labeled CHA_FAN when using
multiple graphics cards for better thermal environment. See page 2-24 for details.
VGA configuration
PCI Express operating mode
PCIe 3.0/2.0 x16_1
PCIe 2.0 x16_2
Single VGA/PCIe card x16 (Recommended for single VGA card) N/A
Dual VGA/PCIe card x16 x4
1.8.6 PCI Express 3.0 x16 slot
This motherboard has one PCE Express 3.0 x 16 slot that supports PCI Express 3.0 x 16
graphics cards complying with the PCI Express specifications.
1.8.7 Interrupt assignments
Standard interrupt assignments
A B C D E F G H
PCIex16_1 shared – – – – – – –
PCIex16_2 shared – – – – – – –
PCIex1_1 – – shared – – – – –
PCI_1 – shared – – – – – –
LAN shared – – – – – – –
VGA shared – – – – – – –
USB 2.0 Controller1 – – – – – – – shared
USB 2.0 Controller2 – – – – – – – shared
XHCI Controller shared – – – – – – –
SATA Controller1 – – – shared – – – –
SATA Controller2 – – – shared – – – –
HD Audio – – – – – – shared –