[SOLVED] High usage on single-core

[Campii]

I currently have an i7-8700k CPU and I have noticed that when I am doing non-cpu intensive things, the Core 1 T0 Usage goes pretty high. From around 40-80% usage. My fans have also been running at a high rpm lately as well because I can literally hear them. When I start my computer up, it sounds like I am running 3 Battlefield V's at once. All of this started to happen when I put in an RTX 2080Ti. I do not know if it is a power issue, cpu issue, or software issue. I just recently updated my BIOS but that did not seem to fix it, I have all my drivers installed for CPU and GPU, so I am kind of at a loss. Any help would be greatly appreciated.

Current specs:
CPU: i7-8700k 3.7ghz stock (w/ turbo boost 4.3ghz)
Mobo: Z370 Aorus Gaming 7 (BIOS ver F15a)
Ram: 32GB DDR4 3200
GPU: Gigabyte RTX 2080Ti
Power Supply: EVGA 650 G3

 

[dorsai]

It sounds like something is running in the back ground...I'd suggest a full virus and trojan scan...check task manager to see whats running when the cpu use spikes up.

 

[Zerk2012]

That really sounds about right to me. Turn the PC on all the fans kick in then slow back down, CUP single core usage goes up because your only using one core.