Expansion bus specificationsThe PowerEdge R730xd system supports PCI express (PCIe) generation 3 expansion cards, which need tobe installed on the system board using expansion card risers. This system supports three types ofexpansion card risers. The following table provides the expansion card riser specifications:Table 18. Expansion card riser specificationsExpansion card riser PCIe slots on theriser Height Length LinkRiser 1 Slot 1 half-height low-profile x8Riser 1 Slot 2 half-height low-profile x8Riser 1 Slot 3 half-height low-profile x8Riser 2 Slot 4 full-height full-length x16Riser 2 Slot 5 full-height full-length x8Riser 3 (alternate) Slot 6 full-height full-length x16NOTE: When using slots 1 through 4 on the riser, ensure that both the processors are installed onthe system.Memory specificationsThe PowerEdge R730xd system supports DDR4 registered DIMMs (RDIMMs) and load-reduced DIMMs(LRDIMMs). Supported memory bus frequencies are 1333MT/s, 1600 MT/s, 1866 MT/s, 2133MT/s, or 2400MT/s.Table 19. Memory specificationsMemory modulesockets Memory capacity Minimum RAM Maximum RAMTwenty-four 288–pin• 64 GB quad rank(LRDIMMs)• 4 GB or 8GB singlerank (RDIMMs)• 8 GB, 16 GB, or 32 GBdual rank (RDIMMs)• 4 GB with singleprocessor• 8 GB with dualprocessors (minimumone memory moduleper processor)• LRDIMM up to 786 GBwith a singleprocessor• LRDIMM up to 1,536GB with dualprocessors• RDIMM up to 384 GBwith a singleprocessor• RDIMM up to 786 GBwith a dual processorDrive specificationsHard drivesThe PowerEdge R730xd system supports SAS, SATA, Nearline SAS hard drives and Solid State Drives(SSDs).34