CPU temps jumping around

[TristanJ]

I just got a new i7 6700k and a h100i extreme as a cooler and while I was stress testing the temps was jumping between 70C and 40C every few seconds. Why is that? I included a picture if you wanted to see.

[intelCore]

Just now, TristanJ said:

I just got a new i7 6700k and a h100i extreme as a cooler and while I was stress testing the temps was jumping between 70C and 40C every few seconds. Why is that? I included a picture if you wanted to see.

Load is constant while this happens?

[TristanJ]

2 minutes ago, intelCore said:

Load is constant while this happens?

Yes Intelburntest constant 100% When it dips lower and stay there that when the test is done

[arch_linuxos]

4 minutes ago, TristanJ said:

Yes Intelburntest constant 100% When it dips lower and stay there that when the test is done

Is it throttling for some reason? Is the speed staying constant?

 

Perhaps your cooler is changing itself from a quiet preset to a performance preset?

 

Also, can you check with HWMonitor?

[LeapFrogMasterRace]

IBT runs for a bit and then stops briefly to allow the CPU to cool down a bit this is normal. What setting is IBT on? Max low etc.

[LeapFrogMasterRace]

I think I need to reapply my thermal paste because my temps are really bad but I ran it quickly to prove my point. 

 

[TristanJ]

4 minutes ago, LeapFrogMasterRace said:

I think I need to reapply my thermal paste because my temps are really bad but I ran it quickly to prove my point. 

 

Yea it seems like you are correct. I reran the test at Max and it no longer did this. The temps went up to 80C in like 5min is this too high for a AIO watercooler? Since I am not confident in my thermal paste apply skills.

[arch_linuxos]

2 minutes ago, TristanJ said:

Yea it seems like you are correct. I reran the test at Max and it no longer did this. The temps went up to 80C in like 5min is this too high for a AIO watercooler? Since I am not confident in my thermal paste apply skills.

What voltage are you running at?

 

It's pretty hard to mess up thermal paste unless you barely put any at all or covered the whole thing with it, so you're probably fine there :).

[TristanJ]

Just now, arch_linuxos said:

What voltage are you running at?

 

It's pretty hard to mess up thermal paste unless you barely put any at all or covered the whole thing with it, so you're probably fine there :).

I am not sure but I did not change it from stock

[arch_linuxos]

Just now, TristanJ said:

I am not sure but I did not change it from stock

Oh so it's probably running auto. It often overestimates how much you need. I'd try setting it to manual. What's your multiplier?

 

80C is a little higher than preferable for constant temps - the occasional spike might be ok, but not as much just sitting there.

[TristanJ]

Just now, arch_linuxos said:

Oh so it's probably running auto. It often overestimates how much you need. I'd try setting it to manual. What's your multiplier?

 

80C is a little higher than preferable for constant temps - the occasional spike might be ok, but not as much just sitting there.

That was running at full load it idles at 20-40c

[arch_linuxos]

Just now, TristanJ said:

That was running at full load it idles at 20-40c

Yeah I know. But under a stress test I'd try to keep it around 75C at the most. 80C won't fry it, but if you can get it lower, it's better.

[TristanJ]

 

1 minute ago, arch_linuxos said:

Yeah I know. But under a stress test I'd try to keep it around 75C at the most. 80C won't fry it, but if you can get it lower, it's better.

Hmm how can I improve the temp?

 

[arch_linuxos]

Just now, TristanJ said:

 

Hmm how can I improve the temp?

 

I'd try controlling the voltage manually first. You can probably get it lower than whatever auto is doing - should help a lot. Other options are to lower the multiplier by 1, make sure fans are going 100%, increase water pump speed (if possible).

 

I'd do voltage though, most effective and best in the long run.

[Moress]

Perhaps one of the fans on that H100 is dead or the pump is running (way) too slow. That wouldnt explain the jumps but it would explain the generally high temps

[NoVxture]

Bumped the cpu core clock up by .2 ghz and is raised the temp 20C didn't change the voltage now it is not performing as well. I think its faulty temp sensors on the motherboard. because the fans will randomly ramp up and the mobo underclocks the cpu yet it reads temps of 43C at max under load. but it will boot from a cold boot into 30C and be at 40C in under a second which isn't possible. Another thing is its water cooled and the cooler is tightened all the way it has a stopping point. but temps will shoot from 27C to 50C randomly and sometimes it'll go read 6 ghz on turbo boost when the turbo clock is 4ghz. I am probably never buying gigabyte or AMD again unless someone knows how to fix it.( All the temps and clocks after the first sentence are at stock settings after the oc damaged something further somehow. Also this is a new system.)