Asus P6T WS Professional Core i7 / Intel X58/ DDR3/ CrossFireX & SLI/ A&2GbE/ ATX Motherboard Xeon 3500 Series Intel Core i7 Processor Extreme Edition True 16+2 Power Phase Design ASUS EPU 6-Engine & TurboV ATI CrossFireX & NVIDIA SLI Support PCI-X Architecture