Are these tempretures normal?

[Chickenbread]

I got a hint on PC Part Picker, that there might be an issue with my Cooling. So I'm asking if anyone can confirm that these temperatures are too high or normal:

CPU: i7 8700K @ 4.8GHz

AIO: NZXT X62 v2

• ~25°C ambient
• ~40-50°C idle
• ~80-85°C load

 

I should also mention, that as soon as I apply a load, the temperature instantly rises to ~80°C but it stays there and it's not rising, just fluctuating.

[cooky560]

That seems kinda high, I get around 30 idle and around 50 at full load (higher in tests like prime95) but I have a different cooler to you. 

[Chickenbread]

1 minute ago, cooky560 said:

That seems kinda high, I get around 30 idle and around 50 at full load (higher in tests like prime95) but I have a different cooler to you. 

When I build the PC in March I was like: "That seems high, but oh well, it's a more powerful processor, surely it's because of that".

 

...

 

Yeah... I'm that naive...

[Mira Yurizaki]

For most people it's pretty high, but if the CPU is still operating at its rated frequency and is not thermal throttling (which I define as it not being able to maintain base clocks), then it's fine. There's nothing wrong with the cooler per se.

[AskTJ]

What cooler are you using?

 

Kraken X62.

Coffee Lake does run hot.

[A1ko__]

I think thats pretty high for a nzxt kraken

[Chickenbread]

So for thoese wondering, this is the graph at the end of a 20 minute stress test:

 

What confuses me is, that the temperature is constantly ping-ponging between ~75°C and up to 90°C. Isn't an AIO supposed to slowly ramp up in temperature, until everything settled in and then kinda stay at that temperature?