DIMM label identification

To determine DIMM characteristics, see the label attached to the DIMM. The information in this section helps you to use the label to locate specific information about the DIMM.

DIMM label identification
Item Description Example
1 Capacity

8 GB

16 GB

32 GB

64 GB

128 GB

256 GB

2 Rank

1R = Single rank

2R = Dual rank

4R = Quad rank

8R = Octal rank

3 Data width on DRAM

x4 = 4-bit

x8 = 8-bit

4 Memory generation

PC4 = DDR4

5 Maximum memory speed

3200 MT/s

6 CAS latency

AA = CAS 22-22-22

AA = CAS 26-22-22 (for 3DS LRDIMM)

7 DIMM type

R = RDIMM (registered)

L = LRDIMM (load reduced)

For more information about product features, specifications, options, configurations, and compatibility, see the HPE DDR4 SmartMemory QuickSpecs on the Hewlett Packard Enterprise website (https://www.hpe.com/support/DDR4SmartMemoryQS).