There are two USB 3.0 ports on the rear-panel, driven by an Etron EJ168 controller. Gigabyte didn't cheap-out on the southbridge (by opting for SB710), and so we have a full-fledged SB950, complete with six SATA 6 Gb/s ports supporting RAID5. Expansion slots include one PCI-Express 2.0 x16 (wired to the 970), one PCIe 2.0 x16 (electrical 2.0 x4, wired to the SB950), three PCIe x1, and two legacy PCI. It is wired to four DDR3 DIMM slots supporting up to 32 GB of dual-channel DDR3-1866+ MHz memory. The CPU is powered by a simple 5-phase VRM. The 970A-UD3's Ultra Durable 3 Classic component loadout makes way for Ultra Durable 4 Classic on the 970A-DS3, which includes a better weaved fiberglass PCB that's better resistant to humidity features high ESD-resistance ICs located in key circuits anti-surge ICs that prevent installed processors and memory from getting fried if something goes terribly wrong with the VRM and of course low-RDS (on) MOSFETs and 100% solid-state capacitor design. To begin with, the 970A-DS3 uses a much lighter component loadout compared to the UD3. Based on the AMD 970 + SB950 chipset, this board is a product of some clever cost-balancing by its designers, which will spice-up both its specs-sheet, and price-tag, compared to the 970A-UD3. Gigabyte introduced a new value socket AM3+ motherboard designed for AMD FX processors, the 970A-DS3.
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