5.4.1 DDR5 Memory
5.4.1.1 Memory Identifier
You can determine the memory module properties based on the label attached to the
memory module.
Figure 5-23 Memory identifier
No.
Description Example
1 Capacity ● 16 GB
● 32 GB
● 64 GB
● 128 GB
2 rank(s) ● 1R = Single rank
● 2R = Dual rank
● 4R = Quad rank
● 8R = Octal rank
3 Data width on the DRAM ● x4: 4-bit
● x8: 8-bit
4 Type of the memory interface ● PC5 = DDR5
5 Maximum memory speed ● 4800 MT/s
6 Memory latency parameters
(CL-nRCD-nRP)
● A = 34-34-34
● B = 40-40-40
● C = 42-42-42
7 DIMM type ● RD0: reference design for
version RDIMM D0
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