I recently got a new cpu I7 7700k Kaby lake 4.2GHz, is it normal to spike in temp going from 36-50, also it was spiking on idle going up to 70c. I reapplied thermal paste and its not doing it now, but it jumps up and down. (im using liquid cooling)

It's normal. 7700k TIM sucks

So random spikes are find at idle, also when i play games like csgo its around 60c and pubg its around 80c i dont understand, when i first installed it, it never did this.

EDIT what would be a better processor that is intel? a i7 6700k?

This post was edited by MetalPuppies on Feb 14 2018 11:49am

7700k is the best for gaming, 2nd place goes to 8700k.
I most definitely would not upgrade/downgrade. 80C is toasty, but it's not over the limit.

Let me launch pub and see what I'm at. Are you overclocked?

This post was edited by Penguins0690 on Feb 17 2018 04:21pm

I've delidded mine and use a 280 MM radiator to cool that bad boy.

I would consider doing this with your 7700K...

Delid it. There are plenty of how-to's and plenty of folks on here who have done this and would help.
Then either get a decent air cooler or an AIO water cooler.

That's pretty much it. That will get you temps under control, and would also leave you the option to do a decent overclock if you wanted to.