AMD Ryzen 9 3900X Linux Memory Scaling Performance

Written by Michael Larabel in Memory on 9 July 2019. Page 1 of 4. 32 Comments

For those wondering if upgrading your RAM to higher frequency DIMMs is worthwhile when moving to AMD X570 and a new Zen 2 processor like the Ryzen 9 3900X, here are some reference benchmarks at different frequencies while maintaining the same timings.

In case you missed it, the new AMD processors offer native DDR4-3200 memory support while back during AMD's press briefings they recommended DDR4-3733 as a "sweet spot" for those wanting optimal latency at a reasonable speed. But if you are after pushing high-end DDR4 to their limits, they say DDR4-5100 can be achieved on air cooling with mild overclocking.

Ryzen 9 3900X Memory Scaling Benchmarks

For the purposes of this quick article, I ran some tests on the AMD Ryzen 9 3900X with different frequencies while using the ASUS ROG CROSSHAIR VIII HERO, Corsair Force MP600 NVMe PCIe 4.0 SSD, and the Trident-Z Royal DDR4-3600 2 x 8GB DIMMs supplied as part of the Ryzen 3000 series reviewer kit. I tested various frequencies from DDR4-2600 to DDR4-3800 for reference as the frequencies most of you will encounter with current generation DIMMs and for most of you not investing much time in overclocking or tweaking.

Ryzen 9 3900X Memory Scaling Benchmarks

Via the Phoronix Test Suite, various synthetic and real-world Linux benchmarks were carried out for this Ryzen 9 3900X memory scaling benchmarks from Ubuntu 18.04 LTS with the Linux 5.2 kernel.

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