Owners Manual

● PMem can be mixed with RDIMM, LRDIMM, and 3DS LRDIMM.
● Mixing of DDR4 DIMM types (RDIMM, LRDIMM, and 3DS LRDIMM), within channels, for Integrated Memory Controller
(iMC), or across sockets are not supported.
● Mixing of PMem 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 PMem and a DDR4 DIMM are populated on the same channel, always plug PMem on second slot (black slot).
● If the PMem is configured in Memory Mode, the recommended DDR4 to PMem capacity ratio is 1:4 to 1:16 per iMC.
● PMems' cannot be mixed with other PMems capacities or NVDIMMs.
● Mixing different capacities of RDIMMs and LRDIMMs are not allowed when PMem is installed.
● PMems of different capacities are not allowed.
For more information about the supported PMem configurations, see the Dell EMC PMem User 's Guide at https://
www.dell.com/support/home/products/server_int/server_int_poweredge.
Table 22. 2 socket PMem configurations
No. of
CPUs
in the
Serve
r
PMem
Popul
ation
DRAM
Popul
ation
DRAM
Capac
ity
(GB)
PMem
Capac
ity
(GB)
Operating
system
Memory in
Memory
Mode
(GB)
Total
Memo
ry
(GB)
Total
Memo
ry per
CPU
(GB)
Ratio
DRAM to
Optane
Memory
Requires
an M or L
CPU
Supported
in App
Direct
Mode
Supported
in Memory
Mode
2 128 GB
x 1
16 GB
x 12
192 128 N/A 320 160 1 : 0.7 No Yes No
2 128 GB
x 2
16 GB
x 12
192 256 N/A 448 224 1 : 1.3 No Yes No
2 128 GB
x 4
16 GB
x 8
128 512 512 640 320 1 : 4 No Yes Yes
2 128 GB
x 4
16 GB
x 12
192 512 N/A 704 352 1 : 2.7 No Yes No
2 128 GB
x 8
16 GB
x 12
192 1,024 1,024 1,216 608 1 : 5.3 No Yes Yes
2 128 GB
x 12
16 GB
x 12
192 1,536 1,536 1,728 864 1 : 8 No Yes Yes
2 128 GB
x 1
32 GB
x 12
384 128 N/A 512 256 1 : 0.3 No Yes No
2 128 GB
x 2
32 GB
x 12
384 256 N/A 640 320 1 : 0.7 No Yes No
2 128 GB
x 4
32 GB
x 12
384 512 N/A 896 448 1 : 1.3 No Yes No
2 128 GB
x 8
32 GB
x 12
384 1,024 N/A 1,408 704 1 : 2.7 No Yes No
2 128 GB
x 12
32 GB
x 12
384 1,536 1,536 1,920 960 1 : 4 No Yes Yes
2 128 GB
x 4
64 GB
x 12
768 512 N/A 1,280 640 1 : 0.7 No Yes No
2 128 GB
x 8
64 GB
x 12
768 1,024 N/A 1,792 896 1 : 1.3 No Yes No
2 128 GB
x 12
64 GB
x 12
768 1,536 N/A 2,304 1,152 1 : 2 L SKU Yes No
2 128 GB
x 12
128 GB
x 12
1,536 1,536 N/A 3,072 1,536 1 : 1 L SKU Yes No
2 512 GB
x 8
32 GB
x 12
384 4,096 4,096 4,480 2,240 1 : 10.7 L SKU Yes Yes
82 Installing and removing system components