ASUS LGA2011 Intel C602 DDR3 1600 SATA III Motherboard Z9PE-D8 WS Dual Intel Socket LGA 2011/C602 chipset Quad channel 8-DIMM memory Enhanced parallel GPU computing power with seven PCI Express 3.0 x16 slots Advanced and complete I/O with USB 3.0, SATA 6Gb/s and Intel Ethernet Server-level capabilities with RAID, LAN, and capture cards 3X faster performance with ASUS SSD Caching CPU: Socket 2011; Supports Intel Xeon Dual-Core E5-2600 Family Processors; Supports Intel Turbo Boost Technology 2.0 Chipset: Intel C602 Memory: 8x 240pin DDR3-2133(OC)/2000(OC)/1866(OC)/1600/1333/1066 DIMM Slots, Quad Channel, ECC/Non-ECC, Un-buffered, Max Capacity up to 64GB Expansion Slots: 4x PCI-Express 3.0 x16 Slots (dual x16 or quad x8), 2x PCI-Express 3.0 x16, 1x PCI-Express 3.0x16 (x8 mode); Supports NVIDIA 4-Way SLI Technology and AMD Quad-GPU CrossFireX Technology Expansion Slots: 4x PCI-Express 3.0 x16 Slots (dual x16 or quad x8), 2x PCI-Express 3.0 x16, 1x PCI-Express 3.0x16 (x8 mode); Supports NVIDIA 4-Way SLI Technology and AMD Quad-GPU CrossFireX Technology