temperature Random CPU temperature spikes

[Twi6park]

Hello!!   I have a PC that was built in a different case and I decided to upgrade into a new case and water supply and now I'm getting weird temperature spikes on Core 5.   On top of that the whole PC seems to running hotter.

 

(All temps given will be in Celsius)

 

(Ambient temperature is 72 degrees Fahrenheit)

 

The computer idles around 30 degrees all cores except every 3 seconds Core 5 jumps to about 47 degrees. Then drops back down.    Under Cinebenech load I got the computer as high as 80 degrees with Core 5 reaching 82 degrees.  The old build was a generic case and Corsair H100i (240mm Radiation) that under the same load would sit at 25 degrees idle and 65 under the fullest load with a 4.7 GHz overclock. 

 

Any and all ideas would be appreciated!! Thank you!

 

 

Case.  Lian Li 011 Dynamic 

Cooler.  Lian Li Galahad 360

Thermal Paste Thermal Grizzly Kryonaut

(exhausted top)

Fans. Asiahorse 360mm (times 2)

(intake from side and bottom)

Proccessor i7-8700k (OC to 4.4 GHz)

RAM Corsair 16Gb 3200hz

 

 

[Bombastinator]

That is something a lot of newer processors do.  It’s the boost feature.  Ryzen CPUs are particularly obnoxious about it.  Not something I would worry about.  It’s not even getting all that warm so I don’t see it being a dangerous problem in this case.  47°c is still not very hot for a cpu.