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CPU in constant boost unless task manager is open.


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Hi everyone.

I've recently built a brand new machine and have new AMD 5800x CPU. I've noticed my temps at idle reaching 50-55c and CPU is in constant 4-4.7ghz boost.

I found out that when I open task manager the temps drops to 30s and CPU is at 600-700mhz and stays like that until I close the task manager.


That leads me to a suspicion that there is some process that is on only when task manager is closed? Is that even possible? 

Worth notic my pc is new but I retained my old drives including os drive that I've used without formatting for 4 years now. I did uninstall any unnecessary programs.

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Windows 10 runs a lot of background and maintenance tasks, including several which become active as soon as the system is idle, and launching Task Manager would be very likely to cause such tasks to cease as it is a high priority process.  Do you see the same kind of behavior when you launch other apps such as your web browser, games, or anything else where the temps/clocks drop when the other programs are launched/open/active?  If so, it may be those background/idle tasks causing it.

That said, there is the less likely possibility that it could be some kind of threat such as a cryptocurrency miner at work which terminates itself to hide its existence whenever you launch Task Manager, and while it is not very likely, if you cannot determine the cause of the issue it might be wise to get your system checked by a malware removal specialist to ensure there are no threats on the machine.  If you wish to do so, please follow the instructions in this topic, skipping any steps you are unable to complete, then create a new topic in our malware removal area by clicking here and a malware removal specialist will guide you in checking and cleaning your system of any threats.

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