New approach to CPU throttling issue

As you might know, I am dealing with CPU throttling issue. I am using BIOS A05 and the 180W adapter. I tried many things to keep the CPU clocks at ok frequencies. My goal was to keep the clocks at 2.6 GHz without dropping to 800 MHz. Although this is still unacceptable but 2.6 GHz has no downsides during gameplay.

So I tried a new thing (I don't know if anybody has done this before so I apologize if someone has already done this). I set the multiplers to 26x and I overvolted the CPU by 50 mV's. Now this is new because I overvolted, not undervolted. Undervolting caused BSODs on CPU demanding games however with overvolting I had better results. I've been running Unigine Heaven for 2 hours now and my average CPU clock was 2450 MHz. It rarely drops to 900 MHz but it recovers quickly. I will now test how this settings do during gaming.

Since I am not experienced with voltage settings/overclocking etc. I'd like to ask how safe it is to overvolt. My voltage os around 0.87 volts. Or I should ask this question in another way. Considering the CPU operates at around 1 volts, what would happen if I overvolted the CPU by 180 mV's (1 V @ 2.6 GHz)?

 

orancanoren, what happens at 26x if you don't under or over volt? Just run the stock 0mv?

Also, do you have the power plan set to Balanced - so the CPU can cool between load peaks? Or do you have it set to High Performance?

Generally CPU's will run higher undervolt the lower you set your multiplier.

Generally CPU's will undervolt, at least a little at stock multiplier settings. I have had CPU's undervolt to 125mv stable, and others that will only do 20mv out of the box new - over time it would run 45mv, but that took 2 years.

The idea is to reduce heat, that stops the thermal and power throttling - at least reduces the instances of it.

50mV is likely way too high. Try starting at 10mV if you want to pursue that idea, and increase in 5mv steps.

My Broadwell 5950HQ will undervolt at 105mv at 35x, and run 35x without downclocking, that is that CPU's ideal maximum point - 46.8W on a 47w TDP.

Up until 40x that 5950HQ will run without positive overvolt, but once I explore 41x it takes 50mV and at 42x it takes 90-100mv depending on ambient, and it isn't really stable.

So for you I would recommend finding that maximum point, where the multiplier will hold.

Running stock CPU settings and High Performance, you can use hwinfo64 to watch the average multiplier on a Prime95 run, or some other long running job like from BOINC or Fah, and use that average multiplier as a start. Mine was 35.6x, so I dropped down from 38x stock to 35x, and found the maximum undervolt, and there it runs sustained.

Have fun

 

If it needs the overvolt to keep its clocks correctly. Then I am almost sure something is wrong with either the CPU or the power delivery on the motherboards. Very strange that this happens.

 

Again if you don't have a 240w then the issue may resolve with a just that change. There are some people even with a 240w that get throttling. This is what is important to focus on. The reason being is that if you don't have a 240w it will immediately be blamed for the problem.

 

I am surprised you have not fried your cpu yet. That's risky business.

 

Would ThrottleStop work on this machine? It sounds too simple and I'm sure you've already considered it but you never know...

Worked wonders for me and fixed the CPU gimping that Dell kindly saddled my E6410 with.

 

It works for games which use CPU resources relatively less. However when I use throttlestop on more CPU demanding games it doesn't work. When I try undervolting in those games I get a BSOD after a while. Also overvolting doesn't really work too in real-life usage. I should wait for 240W I guess.