Checking Dimm - NEC EXP805 User Manual

Chapter 2 Preparations

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 Description
1 Capacity
2 Rank
3 DRAM data width
4 Memory generation
The maximum speed of the
5
memory
6 CAS latency
7 DIMM type
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
2933 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)
Express5800/R120h-2M (2nd-Gen) User's Guide
1. Installing Internal Optional Devices
79