User guide
ASUS P7P55D Deluxe 2-23
Chapter 2
VGA conguration
PCI Express operating mode
PCIe x16_1 PCIe x16_2 PCIe x16_3
Single VGA/PCIe card
x16 (Recommend
for single VGA)
N/A x4 (PCIe card)
Dual VGA/PCIe card
x8 x8 x4
Triple VGA/PCIe card
x8 x8 x4
• In single VGA card mode, use rst the PCIe 2.0 x16_1 slot (blue) for a PCI Express
x16 graphics card to get better performance.
• In CrossFireX™ or SLI™ mode, use the PCIe 2.0 x16_1 (blue) and PCIe 2.0 x16_2
(dark blue) slots for PCI Express x16 graphics cards to get better performance.
• Use the three PCIe 2.0 x16 slots for Triple CrossFireX™ mode.
• We recommend that you provide sufcient power when running CrossFireX™ or SLI™
mode. Refer to page 2-39 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 2-37 for
details.