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IBT/Linx (AVX) vs. Prime95 for stability/stress testing

post #1 of 20
Thread Starter 
Which between IBT/Linx (AVX) and Prime95 is more suitable for burn-in testing?

I'm reading that IBT/Linx (AVX) stresses the CPU a lot more (producing higher temps) than Prime95 but can produce instability in a shorter amount of time. TwoCables mentioned that the heat produced by IBT/Linx (AVX) is useless for Sandy Bridge CPUs.

I thought IBT/Linx (AVX) is mainly made for Sandy Bridge? So which is which?

Thanks
post #2 of 20
http://gigaflopd.com/downloads/ibt/

"I had to resort to running 12-24H of Prime95′s blend test before I felt satisfied in calling my system stable. After reading about how Linpack w/AVX stresses Sandy Bridge more than previous versions, I decided to give it a try. People have reported having the best results when using IBT and the latest Linpack. As it turns out, 50 passes of IBT with the latest the Linpack using AVX required ~100mV more than a 12H of Prime95 blend test. Finding stability takes 2.5H with IBT (updated) or 12H with Prime95 blend. Now do you see why it’s so valuable?"
post #3 of 20
Thread Starter 
Quote:
Originally Posted by jlells01 View Post
http://gigaflopd.com/downloads/ibt/

"I had to resort to running 12-24H of Prime95′s blend test before I felt satisfied in calling my system stable. After reading about how Linpack w/AVX stresses Sandy Bridge more than previous versions, I decided to give it a try. People have reported having the best results when using IBT and the latest Linpack. As it turns out, 50 passes of IBT with the latest the Linpack using AVX required ~100mV more than a 12H of Prime95 blend test. Finding stability takes 2.5H with IBT (updated) or 12H with Prime95 blend. Now do you see why it’s so valuable?"
Well, why is it that people in Sandy Stable club say otherwise? Linx indeed needs shorter time but it is producing useless heat as they say. There were couple of times that they passed Linx but didn't pass Prime95 with their stress tests.
post #4 of 20
i wonder is 20 passes of IBT mean stability? i passed prime 95 small ftt for 19hrs and failed ibt on my 4.6ghz oc
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post #5 of 20
I hit 70C max P95 blend, wattage was around 92-98.
With IBT, I hit 85C in like 3 seconds and my wattage was pegged at 125 then I crashed.

I'll stick to P95, I don't want to have a max 4.0GHz overclock...
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post #6 of 20
The way I do is I use IBT initially and adjust settings until I can pass 20 tests on high settings and then go into p95 and custom blend with 90% ram for 12+ hours.
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post #7 of 20
Quote:
Originally Posted by Fortunex View Post
I hit 70C max P95 blend, wattage was around 92-98.
With IBT, I hit 85C in like 3 seconds and my wattage was pegged at 125 then I crashed.

I'll stick to P95, I don't want to have a max 4.0GHz overclock...
yes IBT seem to be give more heat...i downclock mine to 4.4ghz 1.3v so far temp are under 70
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post #8 of 20
I guess you missed the answer in the Stable thread:

Quote:
Originally Posted by kevindd992002 View Post
Why is the "Opinion on IBT/LinX (AVX)" link not working in the OP? What is that opinion all about?

Is it better to stick with Prime95 rather than IBT/Linx (AVX) when stability testing?
It's working for me Anyways here is what it says:

"It may seem that with the updated AVX linkpack, IBT/LinX stresses the cpu more and the temps can get REALLY high. With Prime Blend my highest core is 70c, with IBT it goes to 82c. Nothing will stress the cpu more than prime so stressing with IBT is overkill. Personally I have seen other's passing IBT/LinX and failing Prime and vice versa. A combination of both can ensure more stablility (12 hours Blend then 20 IBT runs), however again, this thread is only for prime blend tests.

Using prime blend is as close to everyday general usage you're going to get, making it more optimal not overkill like the temperature IBT produces. If I went by IBT temps I would probably be recommended to tone down my overclock which I don't have to because when gaming my temps don't even reach 65c.

It's a bit like purchasing a PSU, some will base it on general usage (gaming and 3dmark benching etc), other's will base it on extreme usage like max overclocking (squeezing every last mhz you can get and extreme benching) and there are a some that will combine the extreme usage and run prime and furmark together to create an overkill condition, so recommending on that basis without notifying the OP would be stupid, completely overkill and a waste of money.

My point is I see people recommend other's to tone down overclock's and sometimes even recommend better cooling for a particular overclock because the temps have exceeded 85c with IBT while running something which is more optimal and comparable to general everyday usage like prime95, the temps will be something like 70c, which is absolutly fine."

I'm sure many would agree with me on that
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post #9 of 20
Quote:
Originally Posted by kevindd992002 View Post
Which between IBT/Linx (AVX) and Prime95 is more suitable for burn-in testing?

I'm reading that IBT/Linx (AVX) stresses the CPU a lot more (producing higher temps) than Prime95 but can produce instability in a shorter amount of time. TwoCables mentioned that the heat produced by IBT/Linx (AVX) is useless for Sandy Bridge CPUs.

I thought IBT/Linx (AVX) is mainly made for Sandy Bridge? So which is which?

Thanks
No, what I said is that IBT/LinX with AVX is no more "effective" than Prime95 for Sandy Bridge, so all IBT/LinX with AVX is really doing is generating more heat than Prime95 for no reason.

Next time, please don't use someone's name like you did mine. I mean, I think it would have been better if you said "Some people here on OCN have mentioned that the heat produced by IBT/LinX (AVX) is useless for Sandy Bridge CPUs". If I hadn't noticed this, then I probably would have ended up with people taking your word for it and then coming to me and saying "Why did you say that? What did you mean?"

Y'know what I'm saying? Don't be a name-dropper.
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post #10 of 20
Thread Starter 
Quote:
Originally Posted by munaim1 View Post
I guess you missed the answer in the Stable thread:



It's working for me Anyways here is what it says:

"It may seem that with the updated AVX linkpack, IBT/LinX stresses the cpu more and the temps can get REALLY high. With Prime Blend my highest core is 70c, with IBT it goes to 82c. Nothing will stress the cpu more than prime so stressing with IBT is overkill. Personally I have seen other's passing IBT/LinX and failing Prime and vice versa. A combination of both can ensure more stablility (12 hours Blend then 20 IBT runs), however again, this thread is only for prime blend tests.

Using prime blend is as close to everyday general usage you're going to get, making it more optimal not overkill like the temperature IBT produces. If I went by IBT temps I would probably be recommended to tone down my overclock which I don't have to because when gaming my temps don't even reach 65c.

It's a bit like purchasing a PSU, some will base it on general usage (gaming and 3dmark benching etc), other's will base it on extreme usage like max overclocking (squeezing every last mhz you can get and extreme benching) and there are a some that will combine the extreme usage and run prime and furmark together to create an overkill condition, so recommending on that basis without notifying the OP would be stupid, completely overkill and a waste of money.

My point is I see people recommend other's to tone down overclock's and sometimes even recommend better cooling for a particular overclock because the temps have exceeded 85c with IBT while running something which is more optimal and comparable to general everyday usage like prime95, the temps will be something like 70c, which is absolutly fine."

I'm sure many would agree with me on that
Just passed by the answer in the Stable thread, sorry. Thanks for the info That goes for all Linpack tests like OCCT, right?
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