The process involves reducing clock speeds to improve efficiency, but it may affect performance and stability.
The process involves reducing clock speeds to improve efficiency, but it may affect performance and stability.
I've been thinking about lowering the voltage on my 5900X and what everyone says about it seems overly optimistic. The main points seem to be: Pros – improved heat handling, better speed, less power use, possibly longer life. Cons – risk of instability, maybe not as good as chips with more advanced manufacturing, and setting the right offset can be tricky. In short, it’s probably overhyped, but if you get it right it could work well.
That's essentially the same concept as overclocking, but in reverse. Overclocking boosts performance while sacrificing power and stability. Undervolting maintains current performance but reduces power, which can improve stability. AMD established specific voltage ranges for CPUs, requiring them to operate within certain power limits at designated voltages for desired performance. This allows some CPUs to exceed these limits, giving you flexibility to either optimize with overclocking or adjust with undervolting. The idea behind undervolting is that newer Ryzen chips are more sensitive to temperature; lowering the voltage reduces power consumption, which in turn lowers heat and can lead to marginally higher clock speeds.
For PBO clocking, you shouldn't have to touch anything voltage related other than curve optimizer, and your PPT TDC and EDC settings. No LLC, nothings else. If it crashes while boosting, your limits aren't correct. Outside of that if its running and not erroring or crashing, then no danger.
This setup is definitely not ideal. I should aim to maximize its performance now before any upcoming changes in Universal Physics. I've learned that the developers are evaluating a Vacuum Decay update, which could affect compatibility with most semiconductors. I plan to begin with a negative offset of 10 and test stability. It seems this tends to cause issues when the system is idle or under light loads, so I'll try it for a few days before adjusting again. I'm not in a hurry; I think setting PBO Limits to Disabled and configuring the Curve Optimizer with a negative offset between 1 and 30 would be the right approach based on the available guidance.
I'm testing a 200W PPT 130 TDC 130 EDC with -30V on core boost on my 5900X, achieving around 5150 boost and 4500-4850 depending on load. On the 5600X I run 200/140/180 and it maintains around 4850 for most tasks. I haven't tried other voltages or offsets; I rely solely on manual clocking. I also have Asus performance enhancement enabled, which helps sustain the boost. No guides have been followed—just trial and error.