The laptop is acting oddly following the CPU undervoltage adjustment.
The laptop is acting oddly following the CPU undervoltage adjustment.
I recently purchased the 2019 G7 model equipped with an RTX 2060. Even though I upgraded to more powerful components than the 2018 version, Dell reduced the chassis size, which led to high heat output. To manage temperatures, I undervolted my CPU, and it performed well initially. Using Intel Extreme Tuning Utility, I lowered the voltage to .180V and completed a stress test lasting about 10 minutes without issues. However, after a short period of use, my system would unexpectedly crash. When I reduced the voltage further to .150V and ran a longer stress test for roughly 4 hours, the problem disappeared. Now I can run my system for extended periods without issues, but when I disconnect and reconnect, it crashes again, resetting the settings to default and indicating a failure. Can you help me understand what’s happening?
It seems the voltage supply to the CPU fluctuates when it drops below a certain level without active use. This could be linked to internal regulation constraints. You might consider keeping the default voltage and gradually lowering it until instability appears during idle, then restoring the previous stable value.
I lowered the voltage and performed a ten-minute stress test again. I’m wondering why the system passed the test at 0.180V but failed after an hour at the same power setting. I think the issue with crashes at 0.150V when idle is due to power management shutting down power completely.
The standard voltage curve doesn't perfectly align with the exact voltage required for 100% stable operation. A small offset lowers the voltage across the board. What works for full-load stability often falls short under light loads. Testing with just one or two threads of Prime95 is equally crucial as full-load checks. It's uncommon to find a laptop that remains steady at full load and part load around -180 mV.