Rayaxar :
feelinfroggy777 :
What are your temps under load? Download Intel XTU and run the built in benchmark and look at your temps. You cooler maybe fine, the 8700k is a hot CPU.
78°c is the max it got after the stress test. Are those good temps?
Yeah, those temps are about right. The chip is just really hot. Are your radiator fans not spinning on the h100i? They should be spinning all of the time. Forget what corsair link says, look at the actual fans and see if they are turning.
If your fans are turning and you are getting 78C on a CPU stress test then your system is fine. You will just need to delid that CPU to drop the temps.