What do you use to stress test your Haswell overclock?

[MatadorZA]

Been wondering for a while what is the "best" way to test your overclock and came across this thread: http://linustechtips.com/main/topic/309230-stress-testing-cpu-overclocks/

 

I posted pretty much the same thread on TH a few months ago but also got no responses so I thought I would just ask everyone how they stress tested their Haswell overclock. And be specific.

 

• AIDA64 CPU only (Coolest)
• AIDA64 FPU only
• AIDA64 CPU/FPU/Cache
• Prime95 small FFT's v26.6 or older
• Prime95 small FFT's newer than v26.6 (v28.5 - Hottest)
• Intel Burn Test

I use all of those and the difference in temperature/power fluctuates dramatically between those tests, up to a 25C difference which is absolutely crazy...

 

I usually do 10 passes of IBT on high and then do AIDA64 CPU/FPU/Cache for a few hours. However, after being rock solid stable for ages, I ran P95 v28.5 Small FFT's and temps were 5C higher than IBT's max and then I crashed out lol.

 

I could have posted this as a poll but I think it deserves a bit more discussion.

 

Cheers

[Hieb]

If memory serves Prime95 fudges with the voltage and isn't a good way to test for Haswell stability, since no other program should result in the voltage fluctuations that Prime does.

[MatadorZA]

If memory serves Prime95 fudges with the voltage and isn't a good way to test for Haswell stability, since no other program should result in the voltage fluctuations that Prime does.

 

I've never experienced. On the contrary to get P95 v28.5 to be stable I have to manually jack up the voltage quite a bit higher than to run v26.6 or any combination of the AIDA64 tests.

[i_build_nanosuits]

Intel Extreme Tuning Utility:

http://www.intel.com/content/www/us/en/motherboards/desktop-motherboards/desktop-boards-software-extreme-tuning-utility.html

[harrynowl]

Intel XTU stress test does a good job of covering multiple instruction sets. That's the one I use personally. And it's free.

[airdeano]

Intel XTU for all things Intel

[MatadorZA]

Ah yeah forgot to mention XTU. For me it is about 10C - 16C cooler than IBT and P95. It also fluctuates quite a bit more than IBT and P95.

 

 

Haha I remember a few years ago stress testing was never this difficult my i5 750 @ 4.0GHz would stay the same temperature through a range of tests as well. Hopefully XTU is good enough as it would make my overclocking easier

[SkilledRebuilds]

Aida64 CPU stress testing for an hour, then rendering a video 100% across all cores for however long, 10mins+ rendering time.

If it passes this, I test run all my games.

[DEDRICK]

Crysis 3, seriously.  It gets my CPU hotter than XTU lol

[MatadorZA]

Crysis 3, seriously.  It gets my CPU hotter than XTU lol

 

Haha I'm not really surprised. I am still skeptical about XTU. I should just use Crysis 3 lol

[Blackie Sheen]

Crysis 3, seriously.  It gets my CPU hotter than XTU lol

its probably only because of the heat generated by the gpu thats modify the intake temperature of the air to the cpu cooler. Intel XTU is only for the cpu

[Django]

IIRC IBT uses old Linpack libraries that do not take advantage of AVX2 in Haswell. Try Linx and for maximum performance set 1 thread per core.

 

I remember running XTU with integrated graphics stress test with graphics OC, it artifacted left, right and center, all over the place while XTU graphics stress was being run and passed! Not very confidence inspiring. It was a while ago though, hopefully the newer versions have improved.