AMD Ryzen 9 9950X DDR5-6000 / DDR5-6400 / DDR5-8000 Memory Performance

Written by Michael Larabel in Memory on 27 August 2024 at 02:40 PM EDT. Page 2 of 5. 36 Comments.

👁 High Performance Conjugate Gradient benchmark with settings of X Y Z: 104 104 104, RT: 60. 2 x 16GB DDR5-8000 CL36 CMH32GX5M2X8000C36 was the fastest.

With the HPCG benchmark that is very memory bandwidth intensive, the DDR5-8000 memory kits were yielding the fastest performance -- obviously with the DDR5-8000 CL36 memory coming out ahead of the CL38 kit. Going from the DDR5-6000 to DDR5-8000 memory with the Ryzen 9 9950X was an 8% uplift in performance for this rigorous HPC benchmark.

👁 NAS Parallel Benchmarks benchmark with settings of Test / Class: BT.C. 2 x 16GB DDR5-8000 CL36 CMH32GX5M2X8000C36 was the fastest.

👁 NAS Parallel Benchmarks benchmark with settings of Test / Class: CG.C. 2 x 16GB DDR5-8000 CL36 CMH32GX5M2X8000C36 was the fastest.

👁 NAS Parallel Benchmarks benchmark with settings of Test / Class: FT.C. 2 x 16GB DDR5-8000 CL36 CMH32GX5M2X8000C36 was the fastest.

👁 NAS Parallel Benchmarks benchmark with settings of Test / Class: IS.D. 2 x 16GB DDR5-8000 CL36 CMH32GX5M2X8000C36 was the fastest.

With the NPB HPC benchmarks, the DDR5-6400 memory was performing comparable to the DDR5-8000 memory kits in a number of the workloads. The DDR5-6400 thanks to running the UCLK 1:1 was comparable to the DDR5-8000 memory in many of these demanding benchmarks. The DDR5-6400 kit was also purchased for $215 with the 64GB kit compared to the 32GB DDR5-8000 kit costing comparable, so twice the amount of memory if going after the best value.

👁 NAS Parallel Benchmarks benchmark with settings of Test / Class: MG.C. 2 x 16GB DDR5-8000 CL36 CMH32GX5M2X8000C36 was the fastest.

👁 NAS Parallel Benchmarks benchmark with settings of Test / Class: SP.C. 2 x 16GB DDR5-8000 CL36 CMH32GX5M2X8000C36 was the fastest.

Going from the DDR5-6000 to DDR5-6400 memory was commonly yielding 6~7% better performance in these system benchmarks.

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URL: https://www.phoronix.com/review/amd-ryzen9-9950x-ddr5/2

⇱ AMD Ryzen 9 9950X DDR5-6000 / DDR5-6400 / DDR5-8000 Memory Performance Review - Phoronix

AMD Ryzen 9 9950X DDR5-6000 / DDR5-6400 / DDR5-8000 Memory Performance