Asus 990FXGEN3 Computer Hardware User Manual


 
1-24
Chapter 1: Product introduction
Chapter 1
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_3 slots for
PCI Express x16 graphics cards to get better performance.
In 3-way SLI mode, use the PCIe 3.0 x16_1/PCIe 3.0 x16_3/PCIe 3.0 x16_4 slots for
PCI Express x16 graphic cards to get better performance.
We recommend that you provide sufcient 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.
IRQ assignments for this motherboard
A B C D E F G H
PCIe x16_1 shared
PCIe x16_2 shared
PCIe x16_3 shared
PCIe x16_4 shared
PCIe x1_1 shared
ASM eSATA shared
ASM SATA [Gray] shared
ASM USB3_12 shared
ASM 1042 (Front) shared
ASM USB3_3 shared
Realtek 8111F (LAN) shared
Onchip SATA [Brown] shared
Onchip Audio shared
Onchip USB2_1-5 shared
Onchip USB2_6-8 shared
Onchip USB2_11-14 shared
VGA
conguration
PCI Express operating mode
PCIe
3.0_x16_1
PCIe
2.0_x16_2
PCIe
3.0x16_3
PCIe
3.0x16_4
Single or Dual
VGA/PCIe card
x16
(Recommend for
single VGA)
x16 x16 N/A
3-way SLI x16 x16 x8 x8