Manual
Page 7
For a longer expansion card, use other expansion slots. - 7 - GA-990XA-UD3 Motherboard Layout KB_MS_USB OPTICAL CPU_FAN ATX_12V USB_1394 R_USB Socket AM3+ PWR_FAN R_USB30 USB_LAN Etron EJ168 ATX AUDIO PCIEX1_1(Note) AMD 990X DDR3_4 DDR3_2 DDR3_3 DDR3_1 Realtek RTL8111E CODEC PCIEX16 PCIEX1_2 PCI1 GA-990XA-UD3 VIA PCIEX8 VT6308 PCI2 iTE IT8720 PCIEX4 F_AUDIO BAT SATA3_4 SATA3_5 AMD SB950...
For a longer expansion card, use other expansion slots. - 7 - GA-990XA-UD3 Motherboard Layout KB_MS_USB OPTICAL CPU_FAN ATX_12V USB_1394 R_USB Socket AM3+ PWR_FAN R_USB30 USB_LAN Etron EJ168 ATX AUDIO PCIEX1_1(Note) AMD 990X DDR3_4 DDR3_2 DDR3_3 DDR3_1 Realtek RTL8111E CODEC PCIEX16 PCIEX1_2 PCI1 GA-990XA-UD3 VIA PCIEX8 VT6308 PCI2 iTE IT8720 PCIEX4 F_AUDIO BAT SATA3_4 SATA3_5 AMD SB950...
Manual
Page 8
GA-990XA-UD3 Motherboard Block Diagram 2 PCI Express x8 1 PCI Express x16 CPU CLK+/- (200 MHz) AM3+/AM3 CPU DDR3 2000(O.C.)/1866/1600/1333/1066 MHz or Dual Channel Memory PCIe CLK (100 MHz) x8 x16 PCI Express Bus Switch x1 x1 PCIe ...
GA-990XA-UD3 Motherboard Block Diagram 2 PCI Express x8 1 PCI Express x16 CPU CLK+/- (200 MHz) AM3+/AM3 CPU DDR3 2000(O.C.)/1866/1600/1333/1066 MHz or Dual Channel Memory PCIe CLK (100 MHz) x8 x16 PCI Express Bus Switch x1 x1 PCIe ...
Manual
Page 10
... Installation - 10 - When the PCIEX8 slot is enabled. 1-2 Product Specifications CPU AM3+ Socket: - AMD AM3 Phenom™ II processors/ AMD Athlon™ II processors (Go to GIGABYTE's website for the latest CPU support list.) Hyper Transport Bus 5200 MT/s Chipset .../1600/1333/1066 MHz memory modules * To support a DDR3 1866 MHz (and above) memory, you must install an AM3+ CPU first. (Go to GIGABYTE's website for the latest supported memory speeds and memory modules.) Audio Realtek ALC889 codec High Definition...
... Installation - 10 - When the PCIEX8 slot is enabled. 1-2 Product Specifications CPU AM3+ Socket: - AMD AM3 Phenom™ II processors/ AMD Athlon™ II processors (Go to GIGABYTE's website for the latest CPU support list.) Hyper Transport Bus 5200 MT/s Chipset .../1600/1333/1066 MHz memory modules * To support a DDR3 1866 MHz (and above) memory, you must install an AM3+ CPU first. (Go to GIGABYTE's website for the latest supported memory speeds and memory modules.) Audio Realtek ALC889 codec High Definition...
Manual
Page 13
... host frequency in accordance with the CPU specifications. Locate the pin one of the CPU. Hardware Installation age of the Socket AM3+ Socket A Small Triangle Marking Denotes CPU Pin One AM3+/AM3 CPU - 13 - A Small Triangle Mark Denotes Pin One of the CPU may locate the notches on both sides of the CPU... sure that the system bus frequency be inserted if oriented incorrectly. (Or you wish to set beyond the standard specifications, please do so according to GIGABYTE's website for the peripherals.
... host frequency in accordance with the CPU specifications. Locate the pin one of the CPU. Hardware Installation age of the Socket AM3+ Socket A Small Triangle Marking Denotes CPU Pin One AM3+/AM3 CPU - 13 - A Small Triangle Mark Denotes Pin One of the CPU may locate the notches on both sides of the CPU... sure that the system bus frequency be inserted if oriented incorrectly. (Or you wish to set beyond the standard specifications, please do so according to GIGABYTE's website for the peripherals.