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post #71 of 143
Two Cables, would you recommend using OCCT as a part of your testing regime or is there some reason why you have not included it? I am new to overclocking but I have begun to work my way through your list for my first overclock and was wondering why OCCT was missing. Thanks.
post #72 of 143
Quote:
Originally Posted by MDUK View Post
Two Cables, would you recommend using OCCT as a part of your testing regime or is there some reason why you have not included it? I am new to overclocking but I have begun to work my way through your list for my first overclock and was wondering why OCCT was missing. Thanks.
I don't use it because I have learned that its Small, Medium and Large Data Set tests are the same as Prime95's Small FFTs, Blend, and Large, in-place FFTs tests. It also uses the same linpack tests that the other linpack testing programs use (and OCCT doesn't give the user as much control over the way the test runs). On top of all that, OCCT takes a long time to open. In 64-bit Windows, it can take 4-6 seconds. In 32-bit, it can take 10-14 or 15 seconds. But Prime95 takes around a half a second and so does LinX.

So, it seems like it's rather pointless to use OCCT. However, some people have said that while their overclock was able to withstand several hours of a test in Prime95, using OCCT told them a different story. But it seems that most people continue to use their computer while they run a stress test, and so I think that this is why people are finding different results between Prime95 and OCCT. I mean, a stress test will last longer if you use the computer while it's running.

Now, I suppose you're wondering what I think about OCCT's GPU and PSU tests. Well to be honest, I have never used them. I don't overclock my GPU, nor do I want software to test my PSU.
Edited by TwoCables - 10/30/09 at 12:06pm
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post #73 of 143
I use LinX, which is like Intel Burn Test..

First i was using 10 passes. Then I realized that 10 passes was not enough, because my overclock wasn't consistently passing the test (sometimes, fail, sometimes pass). Now in order to all my system "stable" I require at least 20 passes at the max memory possible. Just to be safe, I've been running 50 passes, then 8 hours of Prime95...

IMO 20 passes of LinX at max memory should be okay in most scenarios.
post #74 of 143
Quote:
Originally Posted by TwoCables View Post
I don't use it because I have learned that its Small, Medium and Large Data Set tests are the same as Prime95's Small FFTs, Blend, and Large, in-place FFTs tests. It also uses the same linpack tests that the other linpack testing programs use (and OCCT doesn't give the user as much control over the way the test runs). On top of all that, OCCT takes a long time to open. In 64-bit Windows, it can take 4-6 seconds. In 32-bit, it can take 10-14 or 15 seconds. But Prime95 takes around a half a second and so does LinX.

So, it seems like it's rather pointless to use OCCT. However, some people have said that while their overclock was able to withstand several hours of a test in Prime95, using OCCT told them a different story. But it seems that most people continue to use their computer while they run a stress test, and so I think that his is why people are finding different results between Prime95 and OCCT. I mean, a stress test will last longer if you use the computer while it's running.

Now, I suppose you're wondering what I think about OCCT's GPU and PSU tests. Well to be honest, I have never used them. I don't overclock my GPU, nor do I want software to test my PSU.
Thanks for the quick response. As I said I'm very new to this, so I don't really know anything about OCCT, I have just heard about it and wondered why it wasn't included in your excellent list. I have begun testing with Intel Burn Test, having passed 13 hours of Prime Small FFTs. Currently running 50x Maximum stress level. If this passes will do the other prime tests and memtest. Its not a huge overclock, only to 3.6Ghz, so I shouldn't have too many issues with stability. I don't really feel the need for any more.

I very much respect your stress testing methods, for the sake of stability and piece of mind. It seems ridiculous to put expensive equipment on the line because of laziness when overclocking.

Incidentally, I haven't had much luck with Linx or IBT. Firstly linx didn't seem to put any stress at all on the CPU, so I tried IBT instead. When running this, I got an instant pass without any test taking place. So I ran as administrator in compatibility mode, but failed after two tests. Having tweaked the BIOS several times with various options, every time I failed after test 2. So after researching this it turns out that this is a bug in IBT to do with running 8 threads. So instead I am currently running 16 and on my fifth test, without any changes to BIOS settings. Not particularly impressed with linpack related software.
post #75 of 143
Quote:
Originally Posted by MDUK View Post
Thanks for the quick response. As I said I'm very new to this, so I don't really know anything about OCCT, I have just heard about it and wondered why it wasn't included in your excellent list. I have begun testing with Intel Burn Test, having passed 13 hours of Prime Small FFTs. Currently running 50x Maximum stress level. If this passes will do the other prime tests and memtest. Its not a huge overclock, only to 3.6Ghz, so I shouldn't have too many issues with stability. I don't really feel the need for any more.

I very much respect your stress testing methods, for the sake of stability and piece of mind. It seems ridiculous to put expensive equipment on the line because of laziness when overclocking.

Incidentally, I haven't had much luck with Linx or IBT. Firstly linx didn't seem to put any stress at all on the CPU, so I tried IBT instead. When running this, I got an instant pass without any test taking place. So I ran as administrator in compatibility mode, but failed after two tests. Having tweaked the BIOS several times with various options, every time I failed after test 2. So after researching this it turns out that this is a bug in IBT to do with running 8 threads. So instead I am currently running 16 and on my fifth test, without any changes to BIOS settings. Not particularly impressed with linpack related software.
You're very welcome!

The newest LinX versions, versions 0.63/0.64, have been optimized to also be good for the new i7/i5 CPUs, so I do recommend using it even though it looks like you didn't have a good experience with it. It could just be some kind of fluke.

When you tried LinX, did you make sure it was in the 64-bit mode, and did you click the "All" button next to where it says "Memory to use" while also manually lowering that amount bit by bit until the test actually runs? I mean, what were the settings?

Also, what do you mean that it seems like LinX didn't put any stress on the CPU?
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post #76 of 143
Quote:
Originally Posted by TwoCables View Post
Also, what do you mean that it seems like LinX didn't put any stress on the CPU?
This happens when LinX tries to use more memory than is available. It will just run at 16% or so indefinitely. If that happens, stop the test, and lower the amount of memory used slightly until the test runs and loads up to 99%. Try to use as much memory as possible though because if you go too low the test becomes essentially useless. I use a minimum of 4800/6GB.
post #77 of 143
Quote:
Originally Posted by NoodleGTS View Post
This happens when LinX tries to use more memory than is available. It will just run at 16% or so indefinitely. If that happens, stop the test, and lower the amount of memory used slightly until the test runs and loads up to 99%. Try to use as much memory as possible though because if you go too low the test becomes essentially useless. I use a minimum of 4800/6GB.
This is somewhat what I mean when I say to manually lower the amount until the test works. For me, if I click "All" in 64-bit mode, then the test won't even last longer than a split second. But if I click "All" and then manually adjust it down until it finally lasts longer than a split second, then I know it's working and I continue testing.
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post #78 of 143
Quote:
Originally Posted by TwoCables View Post
This is somewhat what I mean when I say to manually lower the amount until the test works. For me, if I click "All" in 64-bit mode, then the test won't even last longer than a split second. But if I click "All" and then manually adjust it down until it finally lasts longer than a split second, then I know it's working and I continue testing.
They should really fix that in the next release... isn't there some way for it to know how much memory is available without needing to be told exactly?
post #79 of 143
All I know is that passing more then 10 passes on intel burn gave me more confidence then 12hrs of prime.
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post #80 of 143
Quote:
Originally Posted by NoodleGTS View Post
They should really fix that in the next release... isn't there some way for it to know how much memory is available without needing to be told exactly?
Well, I suppose somebody could potentially study it and change "Memory for OS" until clicking "All" always works from the beginning so that it's using the most memory possible. But based on my experience, this amount is never exactly the same twice.
Quote:
Originally Posted by Heavy Light 117 View Post
All I know is that passing more then 10 passes on intel burn gave me more confidence then 12hrs of prime.
With all due respect, that doesn't mean 10 passes equals 12 hours. Nor does it mean that it's stable. Many of us have found that it is necessary to utilize both Prime95 and linpack. Linpack is not superior to prime testing; it is only different.

So, it doesn't matter how confident it made you feel. Our feelings on the matter don't mean anything when compared to the truth.
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