CPU getting 80 degrees while running Prime95.

[Logix_X]

Hey guys,

 

So I've decided to Stress test my i7 4790k @ 4 GHz and noticed that my CPU went up to 80 degrees, which is queit high.

 

The cooler I use is the Noctua NH-D15.

 

Did I fuck something up with the thermal compound or???

[Archangel1994]

You screwed something up indeed because without an OC it should be more around the 50-60C mark

[Logix_X]

So, re-do the thermal compound?

Thanks for the answer

[brandishwar]

That or you might want to consider a different thermal compound. What are you currently using?

[Archangel1994]

That or you might want to consider a different thermal compound. What are you currently using?

I used the standard NT-H1 that came with it

 

Edit: I used a very small amount with the pea method btw

[Eniqmatic]

Double check your work, make sure you've not done something silly. If not, re-do your thermal paste and see if that helps. Watch a video for an idea of how much to use!

[Logix_X]

I am too using the NT-H1, don't really see what I did wrong.

 

While building it I had to redo the thermal compound too, so that may be it.

I used a build guide from Linus and used the same amount of thermal compound

[Lotus]

Did you properly change your voltage settings? Manual override only, no adaptive voltage or anything right? That's usually the culprit.

[Logix_X]

Didn't change anything about the voltages, clock speeds etc.

[Lotus]

Didn't change anything about the voltages, clock speeds etc.

There's your problem, or at least one of them. Adaptive voltage and auto are bad bad bad. They allow more than the set amount of voltage to be sent to your CPU, and heat increases with voltage squared. If adaptive voltage changes your voltage to 110% of what you set (a 10% increase), that's actually a 21% increase in heat, let alone the ramifications of putting more voltage through the CPU than you thought you were doing.

[Logix_X]

So, the factory settings aren't good? ^^

[Lotus]

So, the factory settings aren't good? ^^

Factory settings are bad from an overclocker's perspective and from a heat perspective.

[Logix_X]

Didn't overclock so don't see the problem, but tell me some more.

[Lotus]

 Adaptive voltage and auto are bad bad bad. They allow more than the set amount of voltage to be sent to your CPU, and heat increases with voltage squared. If adaptive voltage changes your voltage to 110% of what you set (a 10% increase), that's actually a 21% increase in heat, let alone the ramifications of putting more voltage through the CPU than you thought you were doing.

I edited my other post just a moment ago and I think you missed it. The information is what I think you're after.

 

That being said, something else is at play. While you get higher temps (and risk overvolting your CPU) with adaptive voltage, and stock clock speeds and everything it still shouldn't go that high on a good aftermarket cooler. Something else is at play, likely your thermal paste application, or perhaps you didn't remove the think plastic covering to keep the heat sink's contact point clean.

Edited February 2, 2015 by Lotus

[Logix_X]

I checked everything, re did the thermal compound but it sill goes up to 75 degrees, either I am really bad in applying the compound or there is something else that's wrong

[Logix_X]

I edited my other post just a moment ago and I think you missed it. The information is what I think you're after.

 

That being said, something else is at play. While you get higher temps (and risk overvolting your CPU) with adaptive voltage, and stock clock speeds and everything it still shouldn't go that high on a good aftermarket cooler. Something else is at play, likely your thermal paste application, or perhaps you didn't remove the think plastic covering to keep the heat sink's contact point clean.

 

I changed the thermal compound but I didnt seem to work, my heatsinks are not getting warm either when I let the torture test run. 

[Lotus]

I changed the thermal compound but I didnt seem to work, my heatsinks are not getting warm either when I let the torture test run. 

If everything about your cooler is correct, sounds like a problem with your CPU's TIM. There's no way to fix it but to RMA it.

[Logix_X]

If everything about your cooler is correct, sounds like a problem with your CPU's TIM. There's no way to fix it but to RMA it.

 

well is it normal that my heatsinks are not heating up?

[Godlygamer23]

No one mentioned the fact that OP is running P95. Run Intel Extreme Tuning Utility instead.

[Logix_X]

No one mentioned the fact that OP is running P95. Run Intel Extreme Tuning Utility instead.

 

Could you explain why P95 is bad?

[Lotus]

Could you explain why P95 is bad?

It's not bad. It just stresses the CPU more than any other program, so when you leave on things like adaptive voltage it generates more heat and supplies more current to the CPU.

 

If your heat sink isn't hot yet your CPU is reaching 80+ °C, there's something wrong with the transfer of heat from your CPU cores to the cooler, which makes me think it's the TIM unless you wrongly applied thermal paste and your cooler twice.

[brandishwar]

Out of curiosity, what case do you have, and what is your current fan layout? I wonder if you're not getting adequate airflow into your case and you're choking off your cooler when under load, or not adequately exhausting any hot air.

[Logix_X]

Out of curiosity, what case do you have, and what is your current fan layout? I wonder if you're not getting adequate airflow into your case and you're choking off your cooler when under load, or not adequately exhausting any hot air.

 

Phanteks Enthoo Pro, Front 200mm? inhale, back 144mm exhaust, CPU cooler 2 exhaust? fans 

 

everything is standard