This document is a memory population guide that introduces the memory population information of AMD EPYC TM 7003 series processors.
This document provides technical guidelines for memory population on systems using AMD EPYC 7003 Series processors. It details supported DIMM types, including RDIMMs, LRDIMMs, 3DS DIMMs, and NVDIMMs, and explains how different configurations affect memory bandwidth and operating speeds.
The guide outlines recommended configurations, such as populating all eight memory channels with equal capacity to enable eight-way interleaving. It also covers specific rules for mixing DIMM types, NVDIMM-N usage, and the impact of NUMA node per socket (NPS) settings on memory interleaving and system performance.
| Supported DIMM Types | RDIMM, LRDIMM, 3DS DIMM, NVDIMM |
|---|---|
| Memory Channels | Eight channels (A, B, C, D, E, F, G, H) |
| Max DIMMs per Channel | Two DIMMs |
| Recommended Configuration | All eight memory channels populated with equal capacity |
AMD recommends populating all eight memory channels with equal capacity to enable eight-way interleaving for best performance.
Volatile (standard DIMMs) and non-volatile (NVDIMM-N) memory types cannot be interleaved, and specific population rules apply to NVDIMM-N.
Operating speed depends on the number and types of DIMMs; for example, two DIMMs per channel may result in lower speeds like 2933 MT/s or 2666 MT/s depending on the configuration.