8×DDR4 DIMM. 2× USB3.1 interface, 6× USB3.0 interface (2 built-in +4 backplane), 6× USB2.0 interface (2 built-in +4 backplane). Multi-graphics technology Support NVIDIA Quad-GPU SLI dual-SIM quad-core crossfire technology Support NVIDIA 3-way SLI three-way crossfire technology Support AMD Quad-GPU CrossFireX dual-SIM four-core crossfire technology.
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