Checking Dimm - NEC Express5800 Series User Manual

Chapter 2 Preparations
1.9.4

Checking DIMM

To check out the features of the DIMM, please refer to the label affixed to the DIMM, the following illustrations
and tables.
Number
1
2
3
4
5
6
7
72
Description
Capacity
Rank
DRAM data width
Memory generation
The maximum speed of the
memory
CAS latency
DIMM type
Express5800/R120h-2E User's Guide
Meaning
8GB
16GB
32GB
64GB
128GB
1R = Single rank
2R = Dual rank
4R = Quad rank
8R = Octal rank
X4 = 4 bit
X8 = 8 bit
X16 = 16 bit
DDR4
2133 MT/s
2400 MT/s
2666 MT/s
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 TSVLRDIMM)
R = RDIMM (with register)
L = LRDIMM (low loading)
E = Unbuffered ECC (UDIMM)
1. Installing Internal Optional Devices