Gigabyte GA-990XA-UD3 R5 Socket AM3+ 7.1-channel Audio ATX Motherboard Extreme Multi-GPU Support Flexible graphics capabilities supported for either 2-Way Cross Fire or 2-Way SLI action, delivering the ultimate in graphics performance for gaming enthusiasts who demand the highest frame rates without compromising on resolution. Lower Rds (on) Mosfets Design GIGABYTE motherboards use Low RDS (on) MOSFETs which are rated to work at higher temperatures to provide a longer lifespan. Realtek ALC1150 115d B SNR HD Audio with Built-in Rear Audio Amplifier 115d B SNR HD Audio The Realtek ALC1150 is a high-performance multi-channel High Definition Audio Codec that delivers an exceptional audio listening experience with up to 115d B SNR, ensuring users get the best possible audio quality from their PC. The ALC1150 provides ten DAC channels that simultaneously support 7.1-channel sound playback, plus 2 channels of independent stereo sound output (multiple streaming) through the front panel stereo outputs. Two stereo ADCs are integrated & can support a microphone array with Acoustic Echo Cancellation (AEC), Beam Forming (BF), & Noise Suppression (NS) technologies. The ALC1150 incorporates Realtek proprietary converter technology to achieve Front differential output 115d B Signal-to-Noise ratio (SNR) playback (DAC) quality & 104d B SNR recording (ADC) quality. Specifications CPU AM3+ Socket: AMD AM3+ FX processors AMD AM3 Phenom„¢ II processors/ AMD Athlon„¢ II processors (Please refer "CPU Support List" for more information.) Hyper Transport Bus 5200 MT/s Chipset North Bridge: AMD 990X South Bridge: AMD SB950 Memory 4 x DDR3 DIMM sockets supporting up to 32 GB of system memory * Due to a Windows 32-bit operating system limitation, when more than 4 GB of physical memory is installed, the actual memory size displayed will be less than the size of the physical memory installed. Dual channel memory architecture Support for DDR3 2000 (O.C.)/1866/1600/1333/1066 MHz memory modules * To support a DDR3 1866 MHz (and above) memory, you must install an AM3+ CPU first. Support for Extreme Memory Profile (XMP) memory modules (Please refer " Memory Support List" for more information.) Audio Realtek ALC1150 codec High Definition Audio 2/4/5.1/7.1-channel Support for Dolby Home Theater Support for S/PDIF Out LAN Realtek Gb E LAN chip (10/100/1000 Mbit) Expansion Slots 1 x PCI Express x 16 slot, running at x 16 (PCIEX16) * For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot. 1 x PCI Express x 16 slot, running at x 8 (PCIEX8) * The PCIEX8 slot shares bandwidth with the PCIEX16 slot. When the PCIEX8 slot is populated, the PCIEX16 slot will operate at up to x 8 mode. 1 x PCI Express x 16 slot, running at x 4 (PCIEX4) 2 x PCI Express x 1 slots (All PCI Express slots conform to the PCI Express 2.0 standard.) 2 x PCI slots Multi-Graphics Technology Support for 2-Way AMD Cross Fire„¢/NVIDIA SLI„¢ technology (The PCIEX16 & PCIEX8 slots only.) Storage Interface South Bridge: 6 x SATA 6 Gb/s connectors Support for RAID 0, RAID 1, RAID 5, RAID 10, & JBOD USB (Universal Serial Bus) South Bridge: 14 USB (Universal Serial Bus) 2.0/1.1 ports (8 ports on the back panel, 6 ports available through the internal USB (Universal Serial Bus) headers) VIA VL805 chip: 4 x USB (Universal Serial Bus) 3.0/2.0 ports (2 ports on the back panel, 2 ports available through the internal USB (Universal Serial Bus) header) * Be sure to connect your USB (Universal Serial Bus) device (s) to the USB (Universal Serial Bus) 2.0/1.1 ports before the USB (Universal Serial Bus) 3.0 driver is installed. Internal I/O Connectors 1 x 24-pin ATX main power connector 1 x 8-pin ATX 12V power connector 6 x SATA 6 Gb/s connectors 1 x CPU fan header 2 x system fan headers 1 x power fan header 1 x front panel header 1 x front panel audio header 1 x S/PDIF Out header 3 x USB (Universal Serial Bus) 2.0/1.1 headers 1 x USB (Universal Serial Bus) 3.0/2.0 header 1 x serial port header 1 x Clear CMOS jumper 1 x Trusted Platform Module (TPM) header Back Panel Connectors 1 x PS/2 keyboard/mouse port 1 x optical S/PDIF Out connector 8 x USB (Universal Serial Bus) 2.0/1.1 ports 2 x USB (Universal Serial Bus) 3.0/2.0 ports 1 x RJ-45 port 6 x audio jacks (Center/ Subwoofer Speaker Out, Rear Speaker Out, Side Speaker Out, Line In, Line Out, Mic In) I/O Controller i TE I/O Controller Chip H/W Monitoring System voltage detection CPU/ System temperature detection CPU/ System/ Power fan speed detection CPU overheating warning CPU/ System/ Power fan fail warning CPU/ System fan speed control * Whether the fan speed control function is supported will depend on the cooler you install. BIOS 2 x 32 Mbit flash Use of licensed AMI UEFI BIOS Support for Dual BIOS„¢ Pn P 1.0a, DMI 2.7, Wf M 2.0, SM BIOS 2.7, ACPI 5.0 Unique Features Support for @BIOS Support for Q-Flash Support for Xpress Install Support for Easy Tune * Available functions in Easy Tune may differ by motherboard model. Support for Smart Recovery 2 Support for ON/OFF Charge Bundle Software Norton Internet Security (OEM version) Operating System Support for Windows 8.1/8/7 Form Factor ATX Form Factor; 30.5cm x 24.4cm