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Chapter 2 – Asus SABERTOOTH 990FX User Manual

Page 34

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Chapter 2: Hardware information

Chapter 2

In single VGA card mode, use the PCIe 2.0 x16_1 slot (beige) for a PCI Express x16

graphics card to get better performance.

In CrossFireX™ or SLI™ mode, use the PCIe 2.0 x16_1 and PCIe 2.0 x16_3 slots for

PCI Express x16 graphics cards to get better performance.

In 3-way SLI mode, use the PCIe 2.0 x16_1/PCIe 2.0 x16_3/PCIe 2.0 x16_4 slots for

PCI Express x16 graphic cards to get better performance.

We recommend that you provide sufficient power when running CrossFireX™ or SLI™

mode.

Connect a chassis fan to the motherboard connector labeled CHA_FAN1/2 when using

multiple graphics cards for better thermal environment.

VGA configuration

PCI Express operating mode

PCIe 2.0 x16_1 PCIe 2.0x16_2 PCIe 2.0x16_3 PCIe 2.0x16_4

Single VGA/PCIe card

x16

(Recommend

for single VGA)

N/A

N/A

N/A

Dual VGA/PCIe card

x16

N/A

x16

N/A

3-way SLI

x16

N/A

x8

x8

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