Is this normal? Temps jumping

[Kranolf]

So I started experiencing this for like 2 weeks now, it didn't do it before. Not sure if I should be worried or not. Temps are always jumping between 35-59 or so, really quickly, as you can see from the video. I have an i7 8700k and Kraken x62 AIO.

 

 

[DarkSmith2]

this is normal no reason to worry.

 

1. BCLK is constantly changing a bit

2. Voltages are adjusting to BCLK, background apps (load) and power plan (frequency).

 

[knightslugger]

normal from what i've seen.

[Kranolf]

27 minutes ago, DarkSmith2 said:

this is normal no reason to worry.

 

1. BCLK is constantly changing a bit

2. Voltages are adjusting to BCLK, background apps (load) and power plan (frequency).

 

 

2 minutes ago, knightslugger said:

normal from what i've seen.

 

Yea but as you can see it even jumps to 51 celsius from 37. It's really weird, cause it's like 100% percent not that hot. It can't be.

[orbitalbuzzsaw]

Normal for me, also on an 8700K and 280MM AIO (albeit a better one, fight me NZXT fanboys)

[knightslugger]

1 hour ago, Kranolf said:

Yea but as you can see it even jumps to 51 celsius from 37. It's really weird, cause it's like 100% percent not that hot. It can't be.

how would you know what the Tdie temperature is otherwise?

[Kranolf]

4 hours ago, knightslugger said:

how would you know what the Tdie temperature is otherwise?

What do u mean? I wasn't playing or anything, idle temps were 35-41 usually. It can't be 51-59 in one second, then back to 35.

[DarkSmith2]

1 hour ago, Kranolf said:

What do u mean? I wasn't playing or anything, idle temps were 35-41 usually. It can't be 51-59 in one second, then back to 35.

yea thus are calculated temperatures not measured. thats why they dont have any meaning, sensors are calibrated and optimized to be more precise for higher temperatures.

[nick name]

2 hours ago, Kranolf said:

What do u mean? I wasn't playing or anything, idle temps were 35-41 usually. It can't be 51-59 in one second, then back to 35.

It absolutely can be. If it is sitting idle then current settles but it will react as soon as it begins doing any work. I think what you might be thinking is your AIO water temps wouldn't jump that quickly in such a short period, but you are measuring the chip itself and not the AIO water temps.

[Kranolf]

Thank you all!

[knightslugger]

7 hours ago, Kranolf said:

What do u mean? I wasn't playing or anything, idle temps were 35-41 usually. It can't be 51-59 in one second, then back to 35.

an idle system always has background processes that run. It's well known that the 8700k runs hot, just like it's predecessor. It's not surprising at all that a background process commands work from the CPU that utilizes a single core for a few moments. That will drive a core temp up quickly on this CPU, and because that heat doesn't really have time to migrate to the IHS, it drops down just as fast.  Think of it like holding a 100w light bulb in your hand, and then turning it on and off quickly. It's still drawing a lot of energy, and is producing a lot of heat, enough to burn you, but because that heat takes time to move through the inert gasses in the bulb before it meets the glass, your fingers don't get burned. A CPU die acts very similarly.