Question How do I undervolt CPU and iGPU with Universal X86 Utility?

[rbogomolec]

I've always been an Intel guy so I know just how to undervolt with ThrottleStop. I wanted to undervolt my dad's laptop to make it run cooler, but sadly found out that I can't use ThrottleStop with AMD. After some research I've decided to go with Universal X86 Utility, but I can't find any decent tutorials. Do I just decrease the power limit or is it some of the PPT/EDC/TDC limits? (idk what these letters mean, I never had to do this in ThrottleStop).

Also, I don't want to use Ryzen Master cuz people seem to have problems with it, and no one ever said a bad thing about Universal X86 Utility, so I'll definitely wanna go with this one.

 

[Lutfij]

Make, model and SKU for your father's laptop? If you have access to Ryzen Master's Curve Optimizer, you should give it a whirl, IMHO. Note everyone's experience is bad, neither for me.

If you have an APU, you could look into this guide;

https://www.reddit.com/r/ZephyrusG15/comments/v0jc03/how_to_undervolt_your_cpu_5900hs6900hs/

 

[rbogomolec]

Make, model and SKU for your father's laptop? If you have access to Ryzen Master's Curve Optimizer, you should give it a whirl, IMHO. Note everyone's experience is bad, neither for me.

If you have an APU, you could look into this guide;

https://www.reddit.com/r/ZephyrusG15/comments/v0jc03/how_to_undervolt_your_cpu_5900hs6900hs/

Thanks for the link man, imma give this a try!

 

[SteJBorchard]

Sorry I really don't get any of these automated Overclocking programs or the GUI interfaces with them.

Is this just the name of how the CMOS/BIOS interface looks when you go in for your specific motherboard?


Cause back in my day ( get off my LAWN!!!) We manually went into the BIOS/CMOS and adjusted the voltages and timings for everything there. Was a lot more time consuming and ya really had to know what your doing plus read the motherboard manual.

So if your using a GUI or program I'd suggest you just go into the BIOS and figure it out that way, You'll have a lot more control/less buggy..

 

[ex_bubblehead]

Sorry I really don't get any of these automated Overclocking programs or the GUI interfaces with them.

Is this just the name of how the CMOS/BIOS interface looks when you go in for your specific motherboard?


Cause back in my day ( get off my LAWN!!!) We manually went into the BIOS/CMOS and adjusted the voltages and timings for everything there. Was a lot more time consuming and ya really had to know what your doing plus read the motherboard manual.

So if your using a GUI or program I'd suggest you just go into the BIOS and figure it out that way, You'll have a lot more control/less buggy..

This is a laptop. You don't get that kind of control in the BIOS there.

 

[SteJBorchard]

Oh ok, Well I don't see a make and model of the laptop in the Original post. So if it's a gaming /enthusiast laptop I would think the BIOS/CMOS would have those options.


if its not a gaming /Enthusiast laptop then maybe don't want to overclock it. 😀 But I guess he can check on manufacturer's website and see if they recommend anything.

 

[jhanwill1122]

Undervolting your CPU and iGPU using Universal X86 Utility can definitely help improve thermal performance. To get started, you’ll want to focus on adjusting the power limits, particularly the PPT (Package Power Tracking), TDC (Thermal Design Current), and EDC (Electrical Design Current) limits.


Here’s a basic breakdown:

1. PPT: Controls the maximum power the CPU can draw. Lowering this can help reduce overall power consumption and heat.
2. TDC: Limits how much current the CPU can draw at high temperatures. Reducing this can keep your system cooler but might limit peak performance.
3. EDC: Limits the current for brief power spikes. Lowering it will reduce short bursts of power usage but can impact overall responsiveness if set too low.

To undervolt, adjust these limits gradually. Lower the values step by step while testing stability. Be sure to monitor your system for stability and performance after each change. It's also a good idea to use stress testing tools like Prime95 or Cinebench to check if the system is stable at lower voltages.


It’s great that you’re choosing Universal X86 Utility since it’s more accessible and doesn’t have the issues some users face with Ryzen Master. Keep an eye on the temperatures and ensure that everything is running within safe limits!


Good luck, and don't hesitate to ask if you need more guidance along the way!