Item Description Example
3 Data width on DRAM
x4 = 4-bit
x8 = 8-bit
x16 = 16-bit
4 Memory generation
PC4 = DDR4
5 Maximum memory speed
2133 MT/s
2400 MT/s
2666 MT/s
6 CAS latency
P = CAS 15-15-15
T = CAS 17-17-17
U = CAS 20-18-18
V = CAS 19-19-19 (for RDIMM, LRDIMM)
V = CAS 22-19-19 (for 3DS TSV LRDIMM)
7 DIMM type
R = RDIMM (registered)
L = LRDIMM (load reduced)
E = Unbuffered ECC (UDIMM)
For more information about product features, specifications, options, configurations, and compatibility, see the
product QuickSpecs on the Hewlett Packard Enterprise website (http://www.hpe.com/info/qs).
DIMM slot locations
DIMM slots are numbered sequentially (1 through 12) for each processor. The supported AMP modes use the
letter assignments for population guidelines.
654321
121110987
LFJDHB AGCIEK LFJDHB AGCIEK
121110987654321
CH4CH5CH6 CH3CH2CH1 CH4CH5CH6 CH3CH2CH1
P2 P1
NVDIMM identification
NVDIMM boards are blue instead of green. This change to the color makes it easier to distinguish NVDIMMs
from DIMMs.
To determine NVDIMM characteristics, see the full product description as shown in the following example:
118 DIMM slot locations
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