[SOLVED] Undervolting too much

[FuzzFest]

Hi all,

Pretty new to this so please bare with me.
I recently got a Dell G3 3590 gaming laptop for a great price knowing that it runs quite hot so I decided to undervolt it and have managed (through ThrottleStop) to get to -450mv for CPU core and cache with no problems in stability. But reading up about this it just doesn't seem possible, am I doing something wrong?

 

[mitch074]

It's possible it doesn't clock up anymore as a result. I would recommend cleaning it up thoroughly, replace the thermal paste and THEN undervolt it, checking its max frequency under full core load on each reduction.

 

[sizzling]

As above if you don't hit stability issues you will see a reduction in boost and possibly stock speeds. If you want to reduce heat you can also reduce the boost speed of the CPU. I have a Dell G5 with a 9850h, dropping the all core boost speed form 4.0 to 3.8Ghz in conjunction of using a -.150mv undervolt significantly helped reduce temperatures with no real world performance difference.

 

[FuzzFest]

As above if you don't hit stability issues you will see a reduction in boost and possibly stock speeds. If you want to reduce heat you can also reduce the boost speed of the CPU. I have a Dell G5 with a 9850h, dropping the all core boost speed form 4.0 to 3.8Ghz in conjunction of using a -.150mv undervolt significantly helped reduce temperatures with no real world performance difference.

How can I reduce the core boost speed frequency? Using throttlestop?

Do i just use the set multiplier?

 

[sizzling]

How can I reduce the core boost speed frequency? Using throttlestop?

Do i just use the set multiplier?

Yes. It gives you the option for if 1, 2, 3......... cores are in use how high the maximum boost is. I reduced the value for when all cores are in use.

 

[Andycrenator]

It's possible it doesn't clock up anymore as a result. I would recommend cleaning it up thoroughly, replace the thermal paste and THEN undervolt it, checking its max frequency under full core load on each reduction.

i have done a -1000mV undervolt is that even possible
Screenshot of the hwmonitor https://ibb.co/Jt1D2ky

 

[mitch074]

i have done a -1000mV undervolt is that even possible
Screenshot of the hwmonitor https://ibb.co/Jt1D2ky

Yes it's possible, it also means your CPU doesn't clock up much anymore - it's probably running at 1 GHz, no more. This doesn't impact stuff like web browsing too much, since this is now very well threaded (4 cores at 1 GHz is surprisingly responsive in such a case, especially now that most of the rendering is done directly on the GPU), but try and run a CPU intensive task (like a 3D render, some games or a software-only video compression) and you'll understand what "slow" means.