Hey all, right now im running an i7-4790k at stock everything including auto everything in the bios. My question is im gearing up to overclock and im just testing stock config and im getting an 88 degrees celsius at 100% load on IBT max stress with a noctua nh-d15. Is this a normal temp? If not any suggestions to what the problem is?
IBT normal temps?
- Thread starter KnowAN0ah
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gskill support
Splendid
- Feb 27, 2012
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That's hot, you should probably remove the fan, clean off the old paste, and reapply new paste.
I'd suggest limiting the amount of stress testing on that cpu.
You may also be limited on overclocking unless you upgrade the cooling system.
I'd suggest limiting the amount of stress testing on that cpu.
You may also be limited on overclocking unless you upgrade the cooling system.
- Nov 13, 2006
- 6,378
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What is your ambient temperature?
Core voltage (Vcore) settings in “Auto” apply significantly more voltage than is necessary to maintain stability. Voltage translates into Power (Watts), which is dissipated as heat.
Here's the normal operating range for Core temperature:
80C Hot (100% Load)
75C Warm
70C Warm (Heavy Load)
60C Norm
50C Norm (Medium Load)
40C Norm
30C Cool (Idle)
Also, there's a difference between stability testing and thermal testing.
IBT is runs Linpack, which is brutal. It's good for stability testing, but not so much for thermal testing.
Prime95 v26.6 Small FFT's is the preferred test because it's a steady-state 100% workload. This is the test that Real Temp uses to test sensors. Prime95 version 26.6 is well suited to all Core i and Core 2 variants.
Prime95's default test, Blend, is a cyclic workload for testing memory stability, and Large FFT's combines CPU and memory tests. As such, Blend and Large FFT's both have cyclic workloads which are unsuitable for CPU thermal testing.
Other stability tests such as Linpack and Intel Burn Test have cycles that peak at 110% workload, which are also unsuitable for CPU thermal testing. The test utility OCCT runs elements of Linpack and Prime95.
Shown above from left to right: Small FFT's, Blend, Linpack and Intel Burn Test.Note the steady-state thermal signatures of Small FFT's, which allows accurate measurements of Core temperatures.
Shown above from left to right: Small FFT's, Intel Extreme Tuning Utility CPU Test, and AIDA64 CPU Test.The "Charts" in SpeedFan span 13 minutes, and show how each test creates different thermal signatures. Intel Extreme Tuning Utility is also a cyclic workload. Although AIDA64's CPU test is steady-state, the workload is well below Thermal Design Power (TDP), which is insufficient.
If you already have a later version of Prime95, do NOT run it. Here's why:
Core i 2nd, 3rd, 4th and 5th Generation CPU's have AVX (Advanced Vector Extension) instruction sets. Recent versions of Prime95, such as 28.5, run AVX code on the Floating Point Unit (FPU) math coprocessor, which produces extremely high temperatures. The FPU test in the test utility AIDA64 shows similar results.
Prime95 v26.6 produces temperatures on 3rd, 4th and 5th Generation processors more consistent with 2nd Generation, which also have AVX instructions, but do not suffer from thermal extremes due to having a soldered Integrated Heat Spreader and a significantly larger Die.
Please download Prime95 version 26.6 - http://windows-downloads-center.blogspot.com/2011/04/prime95-266.html
Run only Small FFT’s for 10 minutes.
Use Real Temp to measure your Core temperatures, as it was developed specifically for Intel processors: Real Temp - http://www.techpowerup.com/downloads/2089/real-temp-3-70/
Your Core temperatures will test 10 to 20C lower with v26.6 than with v28.5.
Please read this Tom’s Sticky: Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html
CT
CompuTronix :
What is your ambient temperature?
Core voltage (Vcore) settings in “Auto” apply significantly more voltage than is necessary to maintain stability. Voltage translates into Power (Watts), which is dissipated as heat.
Here's the normal operating range for Core temperature:
80C Hot (100% Load)
75C Warm
70C Warm (Heavy Load)
60C Norm
50C Norm (Medium Load)
40C Norm
30C Cool (Idle)
Also, there's a difference between stability testing and thermal testing.
IBT is runs Linpack, which is brutal. It's good for stability testing, but not so much for thermal testing.
Prime95 v26.6 Small FFT's is the preferred test because it's a steady-state 100% workload. This is the test that Real Temp uses to test sensors. Prime95 version 26.6 is well suited to all Core i and Core 2 variants.
Prime95's default test, Blend, is a cyclic workload for testing memory stability, and Large FFT's combines CPU and memory tests. As such, Blend and Large FFT's both have cyclic workloads which are unsuitable for CPU thermal testing.
Other stability tests such as Linpack and Intel Burn Test have cycles that peak at 110% workload, which are also unsuitable for CPU thermal testing. The test utility OCCT runs elements of Linpack and Prime95.
Shown above from left to right: Small FFT's, Blend, Linpack and Intel Burn Test.Note the steady-state thermal signatures of Small FFT's, which allows accurate measurements of Core temperatures.
Shown above from left to right: Small FFT's, Intel Extreme Tuning Utility CPU Test, and AIDA64 CPU Test.The "Charts" in SpeedFan span 13 minutes, and show how each test creates different thermal signatures. Intel Extreme Tuning Utility is also a cyclic workload. Although AIDA64's CPU test is steady-state, the workload is well below Thermal Design Power (TDP), which is insufficient.
If you already have a later version of Prime95, do NOT run it. Here's why:
Core i 2nd, 3rd, 4th and 5th Generation CPU's have AVX (Advanced Vector Extension) instruction sets. Recent versions of Prime95, such as 28.5, run AVX code on the Floating Point Unit (FPU) math coprocessor, which produces extremely high temperatures. The FPU test in the test utility AIDA64 shows similar results.
Prime95 v26.6 produces temperatures on 3rd, 4th and 5th Generation processors more consistent with 2nd Generation, which also have AVX instructions, but do not suffer from thermal extremes due to having a soldered Integrated Heat Spreader and a significantly larger Die.
Please download Prime95 version 26.6 - http://windows-downloads-center.blogspot.com/2011/04/prime95-266.html
Run only Small FFT’s for 10 minutes.
Use Real Temp to measure your Core temperatures, as it was developed specifically for Intel processors: Real Temp - http://www.techpowerup.com/downloads/2089/real-temp-3-70/
Your Core temperatures will test 10 to 20C lower with v26.6 than with v28.5.
Please read this Tom’s Sticky: Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html
CT
Thanks for the informative answer. Ambient temps are 33 celsius. I ran Prime95 for 10 minutes using small FFt tests and my temps were at 76 degrees celsius the majority of the time. With this in mind, would you recommend removing the thermal paste and reapplying or just leaving it as it is?
- Nov 13, 2006
- 6,378
- 287
- 38,240
I see no reason to bother with it. As you've seen, IBT will push the processor about 12C higher than Small FFT's because of the 110% workload. Most users don't realize that 100% usage and 100% workload are quite often different.
Considering your high ambient temperature, your Core temperatures with P95 V26.6 Small FFT's are excellent. Proof once again that the NH-D15 is a great cooler!
CT
Considering your high ambient temperature, your Core temperatures with P95 V26.6 Small FFT's are excellent. Proof once again that the NH-D15 is a great cooler!
CT
CompuTronix :
I see no reason to bother with it. As you've seen, IBT will push the processor about 12C higher than Small FFT's because of the 110% workload. Most users don't realize that 100% usage and 100% workload are quite often different.
Considering your high ambient temperature, your Core temperatures with P95 V26.6 Small FFT's are excellent. Proof once again that the NH-D15 is a great cooler!
CT
Considering your high ambient temperature, your Core temperatures with P95 V26.6 Small FFT's are excellent. Proof once again that the NH-D15 is a great cooler!
CT
Cool, Thanks for the help and the insight into cpu temps.
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