Asus P8P67 LX User Manual - Page 34

Onboard Devices Configuration

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VGA configuration Single VGA/PCIe card Dual VGA/PCIe card PCI Express operating mode PCIe x16_1 x16 (Recommended for single VGA card) x16 PCIe x16_2 x2 x4 • In single VGA card mode, use the PCIe 2.0 x16_1 slot (blue) for a PCI Express x16 graphics card to get better performance. • We recommend that you provide sufficient power when running CrossFireX™ mode. See page 1-30 for details. • Connect a chassis fan to the motherboard connector labeled CHA_FAN1 or CHA_FAN2 when using multiple graphics cards for better thermal environment. • The PCIe x1 slots share the bandwidth with the PCIe x16_2 slot. Due to the CrossFireX™ limitation, DO NOT use the PCIe x1 slots when you install two CrossFireX™ graphics cards on both the PCIe x16 slots to set up a CrossFireX™ configuration. To disable the PCIe x1 slot, refer to the Onboard Devices Configuration section in the BIOS for details. 1-23 Chapter 1: Product introduction

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1-23
Chapter 1: Product introduction
•
In single VGA card mode, use the PCIe 2.0 x16_1 slot (blue) for a PCI Express x16
graphics card to get better performance.
•
We recommend that you provide sufficient power when running CrossFireX™ mode.
See page 1-30 for details.
•
Connect a chassis fan to the motherboard connector labeled CHA_FAN1 or CHA_FAN2
when using multiple graphics cards for better thermal environment.
•
The PCIe x1 slots share the bandwidth with the PCIe x16_2 slot. Due to the
CrossFireX™ limitation, DO NOT use the PCIe x1 slots when you install two
CrossFireX™ graphics cards on both the PCIe x16 slots to set up a CrossFireX™
configuration. To disable the PCIe x1 slot, refer to the
Onboard Devices Configuration
section in the BIOS for details.
VGA configuration
PCI Express operating mode
PCIe x16_1
PCIe x16_2
Single VGA/PCIe card
x16 (Recommended for single VGA card)
x2
Dual VGA/PCIe card
x16
x4