Cisco UCS C480 M5 Memory Guide
Memory Capacities for CPU Classes
27
Memory Mode and Mixed Mode
The following tables apply to the Memory Mode and Mixed Mode. The recommended DIMM:DCPMM ratio for
Memory Mode is from 1:4 to 1:16. Ratios in that range are indicated in green shading below; ratios outside
that range are indicated in red shading. In Mixed Mode, the ratio is between memory and only the volatile
portion of the DCPMMs and is not specifically called out in the tables below because the ratio depends on
how much of the DCPMM memory has been allocated to volatile memory.
Table 18 2nd Gen “M” CPU DIMM/DCPMM Memory (6 DIMMs per CPU, and 2, 4, or 6 DCPMMs per CPU)
Number of
DIMMs
1
/DCPMMs
per CPU
Capacity Per DIMM (GB)
16 32 64 128
256
2
Capacity Per DCPMM (GB) 128 128 128 128 128
DIMM:DCPMM capacity
ratio per CPU
1:2.67 1:1.33 1:0.67 1:0.33 2:0.167
6 DIMMs 96 192 384 768 1536
2 DCPMMs 256 256 256 256 256
Total Capacity per CPU 352 448 640 1024 1792
Capacity Per DCPMM (GB) 256 256 256 256 256
DIMM:DCPMM capacity
ratio per CPU
1:5.33 1:2.67 1:1.33 1:0.67 1:0.33
6 DIMMs 96 192 384 768 1536
2 DCPMMs
512 512 512 512 512
Total Capacity per CPU 608 704 896 1280 2048
Capacity Per DCPMM (GB) 512 512 512 512 512
DIMM:DCPMM capacity
ratio per CPU
1:10.67 1:5.33 1:2.67 1:1.33 1:0.67
6 DIMMs 96 192 384 768 1536
2 DCPMMs 1024 1024 1024 1024 1024
Total Capacity per CPU 1120 1216 1408 1792 2560
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