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VitaliyLivnov
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Limit CPU frequency of the Dell Precision M4600 after Windows start

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After buying a used Dell Precision M4600 workstation, we encountered the following problem: very often, after loading Windows, the processor runs at a frequency limited to 800 MHz. CPU load does not rise above 30%. If, after booting, disconnect the power adapter from the outlet and plug it in 20-30 seconds, then the limit is removed and the processor can operate at a maximum frequency of up to 3.2 GHz. This behavior is similar to when we mistakenly connected the wrong power supply with a lower output current. But at the moment we are using a DA180PM111 power adapter with an output power of 180 W, which is what the workstation requires. There are no problems with battery operation. Can you please tell us how to fix this problem?

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Re: Limit CPU frequency of the Dell Precision M4600 after Windows start

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Hi @VitaliyLivnov ,

Quite a similar case with this thread specially when it returns normal while you disconnect and reconnect the power adapter. See if the workaround solutions mentioned in the thread gives any help.

“May the Force be with Dell.”
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VitaliyLivnov
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Re: Limit CPU frequency of the Dell Precision M4600 after Windows start

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Is there anyone who can help? We do not know where to turn with this problem.
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8 Krypton

Re: Limit CPU frequency of the Dell Precision M4600 after Windows start

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Hi @VitaliyLivnov ,

Quite a similar case with this thread specially when it returns normal while you disconnect and reconnect the power adapter. See if the workaround solutions mentioned in the thread gives any help.

“May the Force be with Dell.”
VitaliyLivnov
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Re: Limit CPU frequency of the Dell Precision M4600 after Windows start

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Hi, @bmcowboy 

Thanks for your answer. I will try it.

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Re: Limit CPU frequency of the Dell Precision M4600 after Windows start

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Hi @VitaliyLivnov ,

Good luck dude! Do return with your good news.

“May the Force be with Dell.”
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