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Should I base overclocks on stress test heat? prime 95, Aida...

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  • Heat
  • Stress Test
  • Intel i7
  • CPUs
Last response: in CPUs
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April 4, 2014 10:33:38 AM

My I7 4770k is over clocked at 4.2ghz
With a voltage of 1.170.

During stress testing my temps raise to 85-90, using intel burn or prime 95.

My question is, should i be more concerned with idle and normal load rather than stress test temps?

Examples...

Battlefield 4, load temps are 50
Call Of Duty Ghost, load temps are 40
WinX or Dvdsoft video converting temps are 60.

So even with all cores maxed out at 100% under Video editing temps never go above 60%.

Heatsink - H80i
Mobo - Asus z87 plus
Gpu - gtx 780

More about : base overclocks stress test heat prime aida

April 4, 2014 10:39:13 AM

85-90 are critical temps. you should lower your overclock. Are you overclocking on the stock cooler? make sure you've installed your h80i.
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April 4, 2014 10:51:30 AM

Stress temps do exactly as they say they do - stress.

Now if you have an i7 I doubt you'd use it for just gaming - you'd take advantage of the hyperthreading and maybe livestream or video render which is stressful for the CPU - but, gaming alone isn't exactly CPU intensive.

So the 85-90 you're getting is definitely in the range-of-discomfort, are you sure you have the best airflow possible in your case?
Also, the H80i if I recall only has one fan on the radiator, might consider upgrading to a H100i
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April 4, 2014 11:17:52 AM

When I explore a new cpu's "maximum" OC, I'll run it up to 90c. But aside from initial testing, I never run the system at its maximum OC. Finding that "maximum" is just for fun. I instead look for a comfortable 'sweet spot' where voltage is still low and the clock is decent and the stress-test temps don't go above 80ish - and that gives you a more reasonable 24/7 OC.

Remember that stress-tests are mostly unrealistic loads. As you have seen, gaming temps and compute temps don't get as high as stress-test temps. So if your system is functioning under normal loads under 70c, you are pretty good. I run my i7-920 @3.5ghz with gaming and compute temps in the 50s and low 60s. I could run it @4ghz but gaming and compute temps would go into the 70s and low 80s - too hot for my tastes. My i7-3770k (with a Corsair H80) runs 4.4ghz with similar temps to the i7-920 @3.5. As I recall it hits 82 max in stress-tests.

Make sure your fan profile is set up properly. When exploring an OC I just run the fans at constant maximum speed. After I find a good, stable OC, then I'll tweak the fan profile to make the system quieter at idle. Anyway, hope some of that has helped.
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April 4, 2014 2:38:25 PM

Ok guys, what would be the best system stats tool to review?

I have a ASUS Z87 Plus motherboard, so I have Asus Suite installed which provides a temperature reading.

Asus Suite temp shows - 70-75
RealTemp shows - 90
CPUID HW Monitor shows - 87

So Asus seems to be a 15 degrees difference, sometimes even 20 degrees lower
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April 4, 2014 3:28:47 PM

I use coretemp+a cpu/mem usage gadget on my sidebar.
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April 4, 2014 4:07:28 PM

Like Sunder25, I use the max individual core temps reported by coretemp. Realtemp should also work. I use Asus boards but have never liked their software utilities... HWMonitor also works pretty well but can report some erroneous and hard-to-understand values sometimes.
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April 4, 2014 4:14:55 PM

Also - I remember your post from yesterday about the fans on the H80i. Are you pulling fresh air from outside the case through the radiator and then into the case? Or are you pulling hot air from inside the case through the radiator and out the case? You will get better (lower) CPU temperatures if you pull fresh air from the outside of the case, through the radiator and into the case. Does that make sense?
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April 4, 2014 7:24:55 PM

larkspur said:
Also - I remember your post from yesterday about the fans on the H80i. Are you pulling fresh air from outside the case through the radiator and then into the case? Or are you pulling hot air from inside the case through the radiator and out the case? You will get better (lower) CPU temperatures if you pull fresh air from the outside of the case, through the radiator and into the case. Does that make sense?


Yes, rear fan is setup as intake to pull cool air from the outside.
Maybe I just have a bad chip, I've had a EVO 212 cooler, one H60 and now a H80i.
So far the H80i is the best, but I haven't been able to pull low stress test temperatures

Is it possible that the chip itself might be bad?

I mean unlike yesterday, normal idle and load temps are fine, but stress temps are out of control.
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