DDR4 Memory Scaling Performance On AMD Raven Ridge / Ryzen 5 2400G
Written by Michael Larabel in Radeon on 21 February 2018 at 02:21 PM EST. 18 Comments
While we all know that APUs crave as fast as system memory as possible, with DDR4 memory kits these days easily costing more than the Ryzen 3 2200G and even the Ryzen 5 2400G, here are some reference results when testing the Ryzen 5 2400G under Linux with memory speeds from DDR4-2133MHz to DDR4-3600MHz.

These results are intended for reference purposes showing both synthetic Linux RAM benchmarks and real-world results for those wondering about the relative difference. But generally speaking, the fastest memory you can afford for AMD APU systems is generally worthwhile. For this testing were 2 x 4GB Corsair DDR4-3600 memory modules.

Unfortunately, this testing isn't quite as interesting as intended (and hence just this quick one-page article) due to Raven Ridge Linux difficulties. With the Vega onboard graphics being particularly buggy at launch, I wasn't able to run any OpenGL/Vulkan tests for this comparison... But once the graphics are in better standing on Linux, I will be repeating these tests with various gaming benchmarks. Separately, the Corsair DIMMs were hitting some stability issues when running at DDR4-3600 in some of the more demanding workloads. So take these results today as you wish.

The system details:

Anyhow, for those interested in the results:

Obviously the synthetic memory benchmarks show off the scaling well from DDR4-2133 to DDR4-3600.

While in some real-world workloads, it pays off having the faster memory on Raven Ridge APUs.

You can shave off a few seconds in your kernel build times...

See more of this reference data via this OpenBenchmarking.org result file.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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