How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner VS Vermeer

i underclocked mine, i used this guide.

You still got the option to undervolt the CPU (guide) and the GPU (video tutorial). Maybe the power spikes are too extreme in some cases.

I have two PC's that each have a 5800X3D in them. In my Ghost S1 Build I am running a Noctua L12 (Ghost Edition), With the CPU Undervolted via PBO it runs well. Average gaming temps are around 70 Degrees. Full load the CPU gets closer to 80-85ish degrees. I wouldn't recommend this setup for long sustained work loads as you will leave some performance on the table but otherwise it works fine. I have my fan ramp up to 100% when it gets past 75 degrees. The fan / Cooler are relatively quiet. Very well built cooler.

I ended up using this guide: https://github.com/PrimeO7/How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner/blob/main/README.md

Check the test here: https://github.com/xxEzri/Vermeer/blob/main/Guide.md It shows 5800x3d vs 5900x - especially ram OC is interesting where 5900x with OC ram comes closer to 5800x3d. WIth 5600x should be similar (yet it's slower CPU of course).

If you're looking for sensitivity, consider the games listed in this benchmark.

Cezanne, for it's smaller caches is more sensitive to RAM OC; and given that Cezanne can stay 1:1:1 when approaching 5000MT/s, it's a very good idea to run dual-rank or even single-rank for the frequency headroom. Consider this, but in the opposite direction.

Found this github article to be relevant. https://github.com/xxEzri/Vermeer/blob/main/Guide.md

Consider this 5900X vs 5800X3D.

For your 5800X vs 8700K scaling, it makes sense; it's essentially the same story of what the 5800X3D did to memory scaling for the 5800X; 8700K has very little L3 compared to 5800X non-3D. CPUs with less cache available to a core will be far more sensitive to memory-array performance.

Also look at this to see the difference between jedec and tuned timings. It's basically impossible to give you a number for what kind of performance increase you should expect in your system but these gains you see just from some timings and single vs dual rank should give you an indicator that coming from 2400 14-16-16 you'll get a very big boost in games and workloads where ram matters