Concept Guide

Performance of Dell PowerEdge servers with AMD EPYC 7002 Series CPUs
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Memory subsystem performance
STREAM-triad
As core counts and IPC (instructions per cycle) grows with each new CPU family, it is essential that the accompanying
main memory subsystem provide correspondingly higher aggregate data transfer rates else it will constrain the solution’s
potential compute throughput. This is especially true for Cloud and in-memory database applications. Dell’s new
PowerEdge servers with EPYC 7002 processor models support 8 channels of 3200 MT/s DDR4 system memory per CPU
socket. In figure 4, we see EPYC 7742 sustaining 25% more system memory bandwidth than the previous best EPYC
7601 configuration according to the STREAM benchmark
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Figure 4 Performance improvement running STREAM
See the Appendix C for STREAM results for all EPYC 7002 CPU models and DIMM populations
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https://www.cs.virginia.edu/stream/