Dual Socket LGA-3647 (Socket P) supported, CPU TDP support Up to 205W TDP, 2 UPI up to 10.4 GT/s Intel C622 Up to 3TB 3DS ECC RDIMM, DDR4-2933MHz; Up to 3TB 3DS ECC LRDIMM, DDR4-2933MHz, in 12 DIMM slots; Up to 2TB Intel Optane DC Persistent Memory in memory mode (Cascade Lake only). 1 PCIe 3.0 x32 Left Riser Slot, 1 PCIe 3.0 x16 Right Riser Slot,