Questions about OCCT

Zenoth

Diamond Member
Jan 29, 2005
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Is it me or is OCCT the most... how can I say... precise?

I mean I just ran a couple of tests earlier to make sure that my current overclock was stable, because I started to have doubts about its stability. Around a month ago I ran quite a long lasting (for me at least considering I need to use my PC for work purposes, not just gaming) 28+ hours Orthos Blend test. It never failed, no issues, ran stable until I manually stopped it. Then I believe "alright, 28 hours Orthos Blend, that thing gotta be 100% stable". So time goes by, I play games, do my work stuff, watch and create media, encode and decode... and so on. Almost everything I ran, created and tested was done without any hitches... almost. Indeed, at times I would be the victim of what I believe were software-related and quite unexpected crashes and strange in-game/in-software behaviors (I.E unresponsive). Recently I played some more TF2 and Bioshock, and I encoded and decoded many movies and audio files, and I kept getting those rare crashes. I changed my drivers, chipset, audio, video, monitor, etc, thinking that it would fix my problems.

Until today... I said "alright, they crash here and there, I go to discussion forums, I Google my problems and come up with no results, at least nothing comparable with the contexts I am experiencing". So I decided to try another stability test runs. In fact I started last night with Orthos, for three hours, and again it never crashed. Then I tried Prime95 this morning for four hours... no crashes. Only a little more than three hours ago I gave a try to OCCT, something I never tried before. Like my friend suggested, he said set its priority to "High", run under the CPU & RAM configuration, set its testing time to Infinity and let it go. That's what I did. Well let me say this: OCCT is awesome. All of my doubts were confirmed under 10 minutes. What might have taken 30+ hours for Orthos to find, was caught under freakin' 10 minutes with OCCT. Incredible. So for an entire month I was using a 90% stable system or so, I guess. I mean OCCT is so intensively testing the system that only the mouse cursor was responsive, the rest took anywhere between a minute to literally five minutes before responding, such as opening Firefox. I could play TF2 while Orthos was running! The difference is tremendous.

So my questions are:

1) What makes OCCT so precise/intensive?
2) Are you guys using OCCT too or do you still prefer another testing method/program?
3) Are your observations the same than mine? (I.E OCCT being able to detect instability at about 500% faster than Orthos or Prime95)
4) Did I missed something regarding Orthos and/or Prime95's settings that made them seem less efficient than OCCT?

Thanks.
 

ArchAngel777

Diamond Member
Dec 24, 2000
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I wish I had an answer for you, but the truth is, I do not believe it is any more precise than others tools that test for stability.

I ran OCCT and passed with flying colors, but when I ran P95, both large FFT and small FFT my system would fail on a core. Some people report that Orthos causes failure while Prime95 does not. All three programs basically use the math equations, just possibly in a different order or what not.

Anyway, just wanted to let you know that in your instance, OCCT is finding a flaw - somewhere. But my system will pass with OCCT and fail elsewhere when I have it clocked too high. All depends, for the most part.

I really do like OCCT though. Great program.
 

harpoon84

Golden Member
Jul 16, 2006
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I used Prime95/Orthos but it takes too long. OCCT only uses a fraction of the time and is just as good at finding instability IMO.

 

LOUISSSSS

Diamond Member
Dec 5, 2005
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http://www.xtremesystems.org/f...ad.php?t=180695&page=2
that thread has some good info about how OCCT detects ram/cpu errors so quickly. one of the posters in that thread is the creator of OCCT.
since trying it, i've stopped using other stability testing programs for the most part (only to confirm that occt is correct).
from my experience, systems that fail within the first hour or 2 of OCCT usually end up failing in p95, just 8+ hours later.

IIRC, the code is almost the same, with some optimizations in OCCT that get it to generate errors more quickly than p95.
 

Dadofamunky

Platinum Member
Jan 4, 2005
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Originally posted by: harpoon84
I used Prime95/Orthos but it takes too long. OCCT only uses a fraction of the time and is just as good at finding instability IMO.

Yeah, I like it for the same reasons. It's failed tests on my configs where Prime passed with flying colors. And it doesn't eat up twelve hours for a valid test!

You can customize it to run for that long or longer, though.
 

Zenoth

Diamond Member
Jan 29, 2005
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Well thanks guys, it pretty much sums up what I observed, I don't think I'll ever look back again, OCCT is just so great, and it saves me lots of time by detecting issues so fast, no more will I have to wait 25+ hours in Orthos or Prime to make sure it's stable, and even then...
 

LOUISSSSS

Diamond Member
Dec 5, 2005
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Originally posted by: Zenoth
Well thanks guys, it pretty much sums up what I observed, I don't think I'll ever look back again, OCCT is just so great, and it saves me lots of time by detecting issues so fast, no more will I have to wait 25+ hours in Orthos or Prime to make sure it's stable, and even then...

although OCCT is a good stability test, OCers shouldn't only have a single test in their lineup. OCCT can be your main test, but u should always back them up with 12 hours of p95, 500% coverage of HCI Memtest, 3 loops of 3dmark06... etc. Whatever you please

when i'm tesing out my OC's i usually do:

2 hours of OCCT cpu
2 hours of OCCT ram
500% coverage HCI Memtest
6-12 hours of p95 v25.6 (latest version i've used)

lastly, F@H 24/7.


 

Cutthroat

Golden Member
Apr 13, 2002
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I've been using the new version of OCCT a lot lately while overclocking my Q9450. It finds errors very quickly, I don't think it's lasted longer than 15minutes when I was not stable. If it completed a 1hr auto test the system would pass all other stability tests I could throw at it. It was very helpful in finding my minimum voltages because it would crash very quickly if I undervolted anything.

For long term stability testing it's F@H FTW.
 

amenx

Diamond Member
Dec 17, 2004
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Another good thing about OCCT is it keeps logs of your tests, incl vcore and the other voltage fluctuations. Sometimes its useful in finding clues to a failed OC.