DIMM 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.
Item | Description | Definition |
---|---|---|
1 | Capacity | 8 GB 16 GB 32 GB 64 GB 128 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 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 = UDIMM (unbuffered ECC) |