Dell PowerEdge R640 EMC PowerEdge R640 Installation and Service Manual - Page 95
Table 53. 2 socket DCPMM configurations, Dell EMC DCPMM User 's Guide
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• Mixing of DCPMM operating modes (App Direct, Memory Mode) is not supported. • If only one DIMM is populated on a channel, it should always go to the first slot in that channel (white slot). • If a DCPMM and a DDR4 DIMM are populated on the same channel, always plug DCPMM on second slot (black slot). • If the DCPMM is configured in Memory Mode, the recommended DDR4 to DCPMM capacity ratio is 1:4 to 1:16 per iMC. • DCPMMs' cannot be mixed with other DCPMMs capacities or NVDIMMs. • Mixing different capacities of RDIMMs and LRDIMMs are not allowed when DCPMM is installed. • DCPMMs of different capacities are not allowed. For more information about the supported DCPMM configurations, see the Dell EMC DCPMM User 's Guide at https://www.dell.com/ support/home/products/server_int/server_int_poweredge. Table 53. 2 socket DCPMM configurations No. of CPUs in the Server DCPMM DRAM Populati Populati on on DRAM Capaci ty (GB) DCPM Operating M system Capacit Memory in y (GB) Memory Mode (GB) 2 128 GB x 16 GB x 192 128 N/A 1 12 Total Memory (GB) Total Memor y per CPU (GB) 320 160 Ratio DRAM to Optane Memory 1 : 0.7 Requi Suppor res an ted in M or App L Direct CPU Mode Support ed in Memory Mode No Yes No 2 128 GB x 16 GB x 192 256 N/A 2 12 448 224 1 : 1.3 No Yes No 2 128 GB x 16 GB x 8 128 512 512 4 640 320 1 : 4 No Yes Yes 2 128 GB x 16 GB x 192 512 N/A 4 12 704 352 1 : 2.7 No Yes No 2 128 GB x 16 GB x 192 1,024 1,024 8 12 1,216 608 1 : 5.3 No Yes Yes 2 128 GB x 16 GB x 192 1,536 1,536 12 12 1,728 864 1 : 8 No Yes Yes 2 128 GB x 32 GB x 384 128 N/A 1 12 512 256 1 : 0.3 No Yes No 2 128 GB x 32 GB x 384 256 N/A 2 12 640 320 1 : 0.7 No Yes No 2 128 GB x 32 GB x 384 512 N/A 4 12 896 448 1 : 1.3 No Yes No 2 128 GB x 32 GB x 384 1,024 N/A 8 12 1,408 704 1 : 2.7 No Yes No 2 128 GB x 32 GB x 384 1,536 1,536 12 12 1,920 960 1 : 4 No Yes Yes 2 128 GB x 64 GB x 768 512 N/A 4 12 1,280 640 1 : 0.7 No Yes No 2 128 GB x 64 GB x 768 1,024 N/A 8 12 1,792 896 1 : 1.3 No Yes No 2 128 GB x 64 GB x 768 1,536 N/A 12 12 2,304 1,152 1 : 2 L SKU Yes No 2 128 GB x 128 GB x 1,536 1,536 N/A 12 12 3,072 1,536 1 : 1 L SKU Yes No 2 512 GB x 32 GB x 384 4,096 4,096 8 12 4,480 2,240 1 : 10.7 L SKU Yes Yes 2 512 GB x 32 GB x 384 6,144 6,144 12 12 6,528 3,264 1 : 16 L SKU Yes Yes Installing and removing system components 95
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