Dell PowerEdge R640 EMC PowerEdge R640 Technical Specifications - Page 8

Table 4. Memory specifications (continued) DIMM type DIMM rank DIMM capacity Single processor Minimum RAM Maximum RAM 16 GB 16 GB 192 GB Dual rank 32 GB 32 GB 384 GB 64 GB 64 GB 768 GB NVDIMMN Single rank 16 GB Not supported with single processor Not supported with single processor NA 128 GB RDIMM: 64 GB RDIMM: 384 GB DCPMM: 128 GB DCPMM: 768 GB NA NA DCPMM NA 256 GB NA NA NA NA NA 512 GB NA NA Dual processors Minimum RAM Maximum RAM 32 GB 384 GB 64 GB 768 GB 128 GB 1536 GB RDIMM: 192 GB RDIMM: 384 GB NVDIMM-N: 16 GB NVDIMM-N: 192 GB RDIMM: 128 GB DCPMM: 128 GB RDIMM: 192 GB DCPMM: 2048 GB RDIMM: 384 GB DCPMM: 4096 GB LRDIMM: 1536 GB DCPMM: 1536 GB LRDIMM: 1536 GB DCPMM: 3072 GB RDIMM: 1536 GB DCPMM: 6144 GB NOTE: 8 GB RDIMMs and NVDIMM-N must not be mixed. NOTE: Minimum of two CPUs are required for any configurations that support NVDIMM-N. NOTE: DCPMM can be mixed with RDIMMs and LRDIMMs. NOTE: Mixing of DDR4 DIMM Types (RDIMM, LRDIMM), within channel, integrated memory controller, socket, or across sockets is not supported. NOTE: x4 and x8 DDR4 DIMMs can be mixed within channel. NOTE: Mix of Intel DCPMM operating modes (App Direct, Memory Mode) is not supported within socket or across sockets. NOTE: DIMM slots are not hot-pluggable. Storage controller specifications The PowerEdge R640 system supports: • Internal storage controller cards: PowerEdge RAID Controller (PERC) H330, H730p, H740p, Software RAID (SWRAID) S140. • Boot Optimized Storage Subsystem: HWRAID 2 x M.2 SSDs 240 GB, 480 GB. ○ The card supports up to two 6 Gbps M.2 SATA drives. The BOSS adapter card has a x8 connector using PCIe gen 2.0 x2 lanes, available only in the low-profile and half-height form factor. • External PERC (RAID): H840 • 12Gbps SAS HBAs (non-RAID): ○ External- 12Gbps SAS HBA (non-RAID) ○ Internal- HBA330 (non-RAID) NOTE: The mini-PERC socket is not hot-pluggable. 8 Technical specifications