SUPERMICRO MBD-X10DRI-LN4+-O Enhanced Extended ATX Xeon Server Motherboard Dual LGA 2011-3 Intel C612 CPU Type: Intel Xeon processor E5-2600 v3 family (up to 145W TDP **) ** Motherboard supports this maximum TDP. Please verify your system can thermally support. System Bus: QPI up to 9.6 GT/s Number of DDR4 Slots: 24 x 288-pin DDR4 Standard: 2133/1866/1600MHz ECC DDR4 SDRAM 72-bit Maximum Memory Supported: Up to 1.5TB ECC LRDIMM, 768GB ECC RDIMM ECC Supported: Yes Registered: Yes PCI Express x16: 3 x PCI Express x16