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Emzinn
1 Copper
1 Copper
12250

XPS-9560 Stuck at 0.798 GHz, BD PROCHOT?

Hey Dell Community.

 

I bought a 9560 two years ago, and aside from some annoying voltage/temperature throttling issues, it's been pretty reliable...until now.  As of today, my machine has decided to get stuck at 0.78 GHz (see screenshot below)

Throttled.png

This throttling makes the machine borderline unusable and has been frustrating me all day.  I've experienced this degree of throttling on this machine before when I'm using it intensively, but this current behavior starts when the machine is powered on, and doesn't change regardless of use.  I checked the temps on the CPU and the GPU, and they're all reading normal to low (always in the low 40s C). 

 

After playing around in some settings in ThrottleStop (which I've used before to prevent voltage/thermal throttling during intensive use), I found that unchecking the 'BD PROCHOT' box immediately resolves the issue (and speeds increase back to normal).  Now, upon doing some digging, I've found that disabling BD PROCHOT is probably not in the long term interests if I want this machine to remain happy and healthy.  I'd like to know why the machine is throttling in the first place and how to resolve it without having to use this crude (and possibly unsafe) workaround.

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