User Manual

Chapter 2: Hardware Information
2-10
2.4 System memory
2.4.1 Overview
The motherboard comes with 16 Double Data Rate 4 (DDR4) Dual Inline Memory Modules
(DIMM) sockets.
The figure illustrates the location of the DDR4 DIMM sockets:
2.4.2 Memory Configurations
You may install 16GB, 32GB, or 64GB RDIMM into the DIMM sockets. If you are not sure on
which slots to install the DIMMS, you can use the recommended memory configuration in this
section for reference.
• 6 DIMM configuration is recommended for AMD EPYC™ 7003 Series processors under
the condition that only 6 channels are to be populated.
• 6 DIMM configuration is not recommended for AMD EPYC™ 7002 Series processors.
• When mixing 2DPC and 1DPC, ensure that each channel’s total DIMM size should be
equal. The DIMM size of 2DPC should equal to that of 1DPC, for example, if 2DPC is
using a 32GB memory module (32GB * 2), then a 64GB memory module should be
installed for 1DPC.
• All memory modules for 2DPC should be the same.
• Always install DIMMs with the same CAS latency. For optimum compatibility, it is
recommended that you obtain memory modules from the same vendor.
Memory configurations
DIMM
A1 A2 B1 B2 C1 C2 D1 D2
E1 E2 F1 F2 G1 G2 H1 H2
1 DIMM
P
2 DIMMs
P P
4 DIMMs
P P
P
P
6 DIMMs
P P P P P P
8 DIMMs
P P P P P P
P
P
10 DIMMs
P P P P P
P
P P
P
P
12 DIMMs
P P P P P P P P P P P P
14 DIMMs
P P P P P P P P P P P P P P
16 DIMMs
P P P P P P P P P P P P P P P P