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Dell G5 5590 - 9750h - difference of 20 degrees in cores temperatures

drydry81

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Joined
Sep 16, 2020
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Hi all,

I'm trying to fight against thermal throttling that is occurring on my Dell G5 5590 (9750h).
Here is what I've done so far:
  • Repasted CPU+GPU with Arctic mx-4 (twice, just to be sure I didn't mess it up)
  • Undervolted my CPU ( -200.2mV on core, -135.7mv cache) + EPP 0 + Disabled Turbo Power Limits (both limits are set to 90W)
  • Bought a laptop cooler
Some results I got so far:
  • Cinebench R20 went from 2100 to 2700
  • CPU frequency under load went from 3.2 to 3.99 Ghz (checked with Aida 64) - as far as I understood undervolt allowed CPU to use more power before thermal throttling
  • When gaming (I have a 144 Hz display on the laptop): I set a second profile under ThrottleStop and limited all cores to 32x: in GTA 5 for example I'm on a sweet 100FPS and 70 degrees on CPU+GPU
  • But, I have found two issues that maybe are not
Two issues I need answers if you guys have some input:
  • under Aida 64, when benchmarking only the CPU I can see that some cores stay at 80 degrees but others are at 100 degrees and triggering thermal throttling -> is that normal to see such a difference in term of degrees?
  • I'm experiencing thermal throttling on Cinebench R20, XTU, or Aida64 (after a few minutes) and I see that package is trying to pull 75W.
I put as attachment the difference in temps, if it can help.

What do you guys would do?

Thanks!
 

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