MikeyTen4
New member
Hi all
I've just posted another thread asking for input on my first proper overclock. But I've got another question regarding a specific matter that I thought would be best given it's own thread.
To get to the point quickly - How relevant to 'real world usage' are FPU only stress tests such as (specifically) that offered by AIDA64?
The reason I'm asking is this...
My OCing process so far has involved using AIDA64 primarily for stress testing, along with Intels XTU, and monitoring via RealTemp and CoreTemp side by side. The reason I've used AIDA64 is because I read various reports, some more vague than others, regarding the dangers posed to Haswell chips if other stress testing software is used. I believe this is due to the way they employ AVX instructions during testing, with apps like Prime95 being capable of frying the chip. AIDA64 meanwhile is certified for Haswell.
Now, at present I've got my build up to 42GHz / 4.3GHz turbo and after lengthy tests I'm considering it stable. Buuut... I am overlooking one detail. AIDA64 has tests capable of stressing CPU, FPU, Cache, and memory together. If I run these tests it's all good - around 30°c idle and and 81°c peak at my current OC. If I run the FPU only test on virtually anything except stock settings however, then the chip practically cooks itself within minutes. At this current 'stable' clock the machine hits a whopping 97°c within 5 or 6 minutes! At that point I stopped the test, and I have expectations that if I didn't it would have at best throttled or crashed before long, or at worst burst into flames and melted my face off.
I tried to find out how the test actually functions, so I asked on the AIDA64 forum. One of the developers responded and explained that the FPU test uses AVX and AVX2 instructions, pushing the temps to the limit. He told me that's the intention, but whether or not I see it as relevant to my real world usage is of course up to me. He did say something along the lines of there not being many applications which will work the CPU in the same way right now, but that in the future AVX instructions could become much more common... which I took as meaning the result might not be a big concern today, but maybe tomorrow...
So what's your opinion? I understand of course that the nature of any stress test is that they will push your machine harder and further than any 'real world' usage would, especially AIDA64 apparently. But how relevant is an FPU only test like this? Does it really have any real world value? What results do you get using AIDA64's FPU only test (especially haswell peeps)?
Cheers
Mike
I've just posted another thread asking for input on my first proper overclock. But I've got another question regarding a specific matter that I thought would be best given it's own thread.
To get to the point quickly - How relevant to 'real world usage' are FPU only stress tests such as (specifically) that offered by AIDA64?
The reason I'm asking is this...
My OCing process so far has involved using AIDA64 primarily for stress testing, along with Intels XTU, and monitoring via RealTemp and CoreTemp side by side. The reason I've used AIDA64 is because I read various reports, some more vague than others, regarding the dangers posed to Haswell chips if other stress testing software is used. I believe this is due to the way they employ AVX instructions during testing, with apps like Prime95 being capable of frying the chip. AIDA64 meanwhile is certified for Haswell.
Now, at present I've got my build up to 42GHz / 4.3GHz turbo and after lengthy tests I'm considering it stable. Buuut... I am overlooking one detail. AIDA64 has tests capable of stressing CPU, FPU, Cache, and memory together. If I run these tests it's all good - around 30°c idle and and 81°c peak at my current OC. If I run the FPU only test on virtually anything except stock settings however, then the chip practically cooks itself within minutes. At this current 'stable' clock the machine hits a whopping 97°c within 5 or 6 minutes! At that point I stopped the test, and I have expectations that if I didn't it would have at best throttled or crashed before long, or at worst burst into flames and melted my face off.
I tried to find out how the test actually functions, so I asked on the AIDA64 forum. One of the developers responded and explained that the FPU test uses AVX and AVX2 instructions, pushing the temps to the limit. He told me that's the intention, but whether or not I see it as relevant to my real world usage is of course up to me. He did say something along the lines of there not being many applications which will work the CPU in the same way right now, but that in the future AVX instructions could become much more common... which I took as meaning the result might not be a big concern today, but maybe tomorrow...
So what's your opinion? I understand of course that the nature of any stress test is that they will push your machine harder and further than any 'real world' usage would, especially AIDA64 apparently. But how relevant is an FPU only test like this? Does it really have any real world value? What results do you get using AIDA64's FPU only test (especially haswell peeps)?
Cheers
Mike
