Mode-Specific Guidelines - Dell EMC PowerEdge R640 WNW58 Installation And Service Manual

Table 24. 2 socket PMem configurations (continued)
No. of PMem DRAM
CPUs Popul Popul
in the ation ation
Serve
r
2 128 GB 64 GB
x 12 x 12
2 128 GB 128 GB
x 12 x 12
2 512 GB 32 GB
x 8 x 12
2 512 GB 32 GB
x 12 x 12
2 512 GB 64 GB
x 8 x 12
2 512 GB 64 GB
x 12 x 12
2 512 GB 128 GB
x 12 x 12
2 256 16 GB
GB x 8 x 12
2 256 32 GB
GB x 8 x 12
2 256 32 GB
GB x x 12
12
2 256 64 GB
GB x 8 x 12
2 256 64 GB
GB x x 12
12
2 256 128 GB
GB x x 12
12
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.
DRAM PMem Operating
Capac Capac system
ity ity Memory in
(GB) (GB) Memory
Mode
(GB)
768 1,536 N/A
1,536 1,536 N/A
384 4,096 4,096
384 6,144 6,144
768 4,096 4,096
768 6,144 6,144
1,536 6,144 6,144
192 2,048 2,048
384 2,048 2,048
384 3,072 3,072
768 2,048 N/A
768 3,072 3,072
1,536 3,072 N/A
Total Total Ratio
Memo Memo DRAM to
ry ry per Optane
(GB) CPU Memory
(GB)
2,304 1,152 1 : 2
3,072 1,536 1 : 1
4,480 2,240 1 : 10.7
6,528 3,264 1 : 16
4,864 2,432 1 : 5.3
6,912 3,456 1 : 8
7,680 3,840 1 : 4
2,240 1,120 1 : 10.7
2,432 1,216 1 : 5.3
3,456 1,728 1 : 8
2,816 1,408 1 : 2.7
3,840 1,920 1 : 4
4,608 2,304 1 : 2
Installing and removing system components
Requires Supported
an M or L in App
CPU Direct
Mode
L SKU Yes
L SKU Yes
L SKU Yes
L SKU Yes
L SKU Yes
L SKU Yes
L SKU Yes
L SKU Yes
L SKU Yes
L SKU Yes
L SKU Yes
L SKU Yes
L SKU Yes
Supported
in Memory
Mode
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
No
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