GIGABYTE Motherboard Table Products Models

Model Name   GA-990FXA-UD7   GA-990FXA-UD5   GA-990FXA-UD3 GA-990FXA-D3 CPU Support AMD AM3+ FX/ AM3 PhenomII CPU AMD AM3+ FX/ AM3 PhenomII CPU AMD AM3+ FX/ AM3 PhenomII CPU AMD AM3+ FX/ AM3 PhenomII CPU CPU Socket AMD Socket AM3+ AMD Socket AM3+ AMD Socket AM3+ AMD Socket AM3+ FSB 5200MT/s (HT3.0) 5200MT/s (HT3.0) 5200MT/s (HT3.0) 5200MT/s (HT3.0) Chipset AMD 990FX + SB950 AMD 990FX + SB950 AMD 990FX + SB950 AMD 990FX + SB950 Graphics Interface 6*PCI-E 2.0 x16 (4*x8, 2*x4) 5*PCI-E 2.0 x16 (3*x8, 2*x4) 4*PCI-E 2.0 x16 (2*x16, 2*x4) 4*PCI-E 2.0 x16 (2*x16, 2*x4) Memory Type Dual-channel DDR3 2000+/1866/1333/1066 Dual-channel DDR3 2000+/1866/1333/1066 Dual-channel DDR3 2000+/1866/1333/1066 Dual-channel DDR3 2000+/1866/1333/1066 Memory DIMM 4*DDR3 (Max 16GB) 4*DDR3 (Max 16GB) 4*DDR3 (Max 16GB) 4*DDR3 (Max 16GB) Expansion Slots 1*PCI 1*PCI-E 2.0 x1 + 1*PCI 2*PCI-E 2.0 x1 + 1*PCI 2*PCI-E 2.0 x1 + 1*PCI ATA connector 8*SATA 6Gb/s + 1*eSATA/ USB Combo +1*eSATA 8*SATA 6Gb/s + 2*eSATA/ USB Combo +1*eSATA 6*SATA 6Gb/s + 2*eSATA 6*SATA 6Gb/s SATA RAID 0, 1, 5, 10 (SB950)/ 0, 1, JBOD (SE9172) 0, 1, 5, 10 (SB950)/ 0, 1, JBOD (SE9172) 0, 1, 5, 10 (SB950)/ 0, 1, JBOD (SE9172) 0, 1, 5, 10 (SB950) USB 4* USB3.0 + 14*USB2.0 4* USB3.0 + 14*USB2.0 4* USB3.0 + 14*USB2.0 2* USB3.0 + 14*USB2.0 Audio 8-channel HD 8-channel HD 8-channel HD 8-channel HD 1394 2*1394a 2*1394a 2*1394a - LAN 1*GbE 1*GbE 1*GbE 1*GbE Features & Software USB 3.0, SATA 6Gb/s, 3x USB power, 8+2 phase, Ultra Durable 3, Driver Mosfet, On/Off Charge, 4way CrossFireX/SLI, DualBIOS 3TB+ HDD Support, Debug LED,108dB SNR Blu-ray, Dolby, EES, ET6 USB 3.0, SATA 6Gb/s, 3x USB power, 8+2 phase, Ultra Durable 3, Driver Mosfet, On/Off Charge, 3way CrossFireX/SLI, DualBIOS 3TB+ HDD Support, 108dB SNR Blu-ray, Dolby, EES, ET6 USB 3.0, SATA 6Gb/s, 3x USB power, 8+2 phase, Ultra Durable 3 Classic, On/Off Charge, 2way CrossFireX/SLI, DualBIOS 3TB+ HDD Support, 108dB SNR Blu-ray, Dolby, EES, ET6 USB 3.0, SATA 6Gb/s, 3x USB power, 4+1 phase, Ultra Durable 2 Classic, On/Off Charge, 2way CrossFireX/SLI, DualBIOS 3TB+ HDD Support, 108dB SNR Blu-ray, EES, ET6 Form Factor (mm) ATX (305x264) ATX (305x244) ATX (305x244) ATX (305x244)

Model Name   GA-990XA-UD3 GA-970A-D3   GA-970A-UD3   CPU Support AMD AM3+ FX/ AM3 PhenomII CPU AMD AM3+ FX/ AM3 PhenomII CPU AMD AM3+ FX/ AM3 PhenomII CPU CPU Socket AMD Socket AM3+ AMD Socket AM3+ AMD Socket AM3+ FSB 5200MT/s (HT3.0) 5200MT/s (HT3.0) 5200MT/s (HT3.0) Chipset AMD 990X + SB950 AMD 970X + SB950 AMD 970X + SB950 Graphics Interface 3*PCI-E 2.0 x16 (2*x8, 1*x4) 2*PCI-E 2.0 x16 (x16, x4) 2*PCI-E 2.0 x16 (x16, x4) Memory Type Dual-channel DDR3 2000+/1866/1333/1066 Dual-channel DDR3 2000+/1866/1333/1066 Dual-channel DDR3 2000+/1866/1333/1066 Memory DIMM 4*DDR3 (Max 16GB) 4*DDR3 (Max 16GB) 4*DDR3 (Max 16GB) Expansion Slots 2*PCI-E 2.0 x1 + 2*PCI 3*PCI-E 2.0 x1 + 2*PCI 3*PCI-E 2.0 x1 + 2*PCI ATA connector 6*SATA 6Gb/s 6*SATA 6Gb/s 6*SATA 6Gb/s SATA RAID 0, 1, 5, 10 (SB950) 0, 1, 5, 10 (SB950) 0, 1, 5, 10 (SB950) USB 4* USB3.0 + 14*USB2.0 2* USB3.0 + 14*USB2.0 4* USB3.0 + 14*USB2.0 Audio 8-channel HD 8-channel HD 8-channel HD 1394 2*1394a - 2*1394a LAN 1*GbE 1*GbE 1*GbE Features & Software USB 3.0, SATA 6Gb/s, 3x USB power, 8+2 phase, Ultra Durable 3 Classic, On/Off Charge, 2way CrossFireX/SLI, DualBIOS 3TB+ HDD Support, 108dB SNR Blu-ray, Dolby, EES, ET6 USB 3.0, SATA 6Gb/s, 3x USB power, 4+1 phase, Ultra Durable 2 Classic, On/Off Charge, 108dB SNR Blu-ray, DualBIOS 3TB+ HDD Support, EES, ET6 USB 3.0, SATA 6Gb/s, 3x USB power, 8+2 phase, Ultra Durable 3 Classic, On/Off Charge, 108dB SNR Blu-ray, DualBIOS 3TB+ HDD Support, EES, ET6 Form Factor (mm) ATX (305x244) ATX (305x225) ATX (305x244)

U : 2x copper PCB design       D : All solid capacitor design

///////////////
http://www.gigabyte.com/MicroSite/281/images/900-models.html