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Dell M4800 CPU locked in low power state
I have a Dell M4800 with a Core i7 4900MQ, however I cannot get it to run above 800MHz - even on Prime95. I have tried enabling the high performance power plan but to no avail. CoreTemp is not reporting high temperatures so that is not the issue.
Also the GPU *may* be running at 405MHz when it should be at 666MHz, although I've had conflicting readouts from different programs on that. Again, no high temps.
Does anyone know what the problem might be here?
DELL-Alasdair R
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October 9th, 2017 07:00
How long has it been behaving like this (assuming it was OK previously)?
Were any changes made to the system in terms of new hardware or applications installed?
Can you try booting to a Linux Live USB or CD and see if it's still the same?
DickieDebbil
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October 13th, 2017 09:00
Just to update, I got hold of a 170W charger just out of curiosity and that fixed the issue. But surprised as the model shipped with a 130W charger. Is this still indicative of a fault?
One other issue I wanted to bring up: on Prime95 the CPU is quickly hitting over 90C and downclocking a bit (not massively). Is this how it's supposed to be?