Dell EMC PowerEdge R640 WNW58 - Mode-Specific Guidelines

Table 24. 2 socket PMem configurations (continued)
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 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
2 512 GB
x 12
32 GB
x 12
384 6,144 6,144 6,528 3,264 1 : 16 L SKU Yes Yes
2 512 GB
x 8
64 GB
x 12
768 4,096 4,096 4,864 2,432 1 : 5.3 L SKU Yes Yes
2 512 GB
x 12
64 GB
x 12
768 6,144 6,144 6,912 3,456 1 : 8 L SKU Yes Yes
2 512 GB
x 12
128 GB
x 12
1,536 6,144 6,144 7,680 3,840 1 : 4 L SKU Yes Yes
2 256
GB x 8
16 GB
x 12
192 2,048 2,048 2,240 1,120 1 : 10.7 L SKU Yes Yes
2 256
GB x 8
32 GB
x 12
384 2,048 2,048 2,432 1,216 1 : 5.3 L SKU Yes Yes
2 256
GB x
12
32 GB
x 12
384 3,072 3,072 3,456 1,728 1 : 8 L SKU Yes Yes
2 256
GB x 8
64 GB
x 12
768 2,048 N/A 2,816 1,408 1 : 2.7 L SKU Yes No
2 256
GB x
12
64 GB
x 12
768 3,072 3,072 3,840 1,920 1 : 4 L SKU Yes Yes
2 256
GB x
12
128 GB
x 12
1,536 3,072 N/A 4,608 2,304 1 : 2 L SKU Yes No
NOTE: There are limited configurations available for Dual Socket Servers with only one CPU populated.
NOTE: PMem is supported on systems with 1600W and 2400W PSU configuration.
NOTE:
● High Performance Fan is required with PMem.
● GPU and FGPA cards are not supported.
● Mid or rear storage is not supported.
● Front 12 x 3.5-inch drives are not supported.
Mode-specific guidelines
The configurations allowed depend on the memory mode selected in the System BIOS.
Installing and removing system components
59