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Looking for VALIDATION!

post #1 of 11
Thread Starter 
Quote:
Test 5 is a very good memory test for overclocking and stock stability purposes. Generally test 5 will only fail at the very, very end of the test. This is completely normal if your pushing your memory out of spec or the memory is slightly "under spec" meaning it's likely to be faulty. If test 5 freezes memtest so that the "wall time" is no longer moving, it means that the Northbridge is out of spec and you have raise the chipset voltage a notch. If you get errors at the very end of test, then your RAM is simply working too hard. Raising memory voltage or raising mem timings seems to help this.

However, in my experience, if Memtest's test 5 appears to be completely stable, you can still get 3d apps crashing out and Prime 95 errors. This pretty much renders this kind of testing useless for some people, but you get the advantage that you do not risk corrupting HDD for overclocking too high, which might happen if you test the stability of the system in Windows or you have bsods when you boot up a new system and need a low level test to "single" things out.
i was looking up some info on memory overclocking and came across this post on some AMD forum. for the most part the guy seems to sound like he knows what he's talking about; however i'm looking for some validation on the info about memtest test 5.

can anyone tell me about test 5 in memtest? if it freezes during the test does that mean you need to raise the chipset voltage? if it fails at the end of the test then you need to adjust the memory voltage? is this guy full of crap?
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post #2 of 11
that's usually where my tests fail if my RAM was not stable during OCing...i'd run test 5 first, if it passed, then I ran the whole thing overnight
    
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post #3 of 11
Thread Starter 
what about the FSB part though? like he says the test can fail in two ways; one will tell you your FSB needs more voltage, the other tells you the memory needs more voltage. is this true or what?
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post #4 of 11
Quote:
Originally Posted by Bazmecc View Post
that's usually where my tests fail if my RAM was not stable during OCing...i'd run test 5 first, if it passed, then I ran the whole thing overnight
Same, test 5 is the roughest test. If you pass that signs are good that you're pretty set to roll.

Quote:
Originally Posted by dubbedmk3 View Post
what about the FSB part though? like he says the test can fail in two ways; one will tell you your FSB needs more voltage, the other tells you the memory needs more voltage. is this true or what?
That can be true for any OC on the RAM. It's not limited to just one test or one instance. The only way to tell which it actually is is by trying to increase the voltages together and independently.
Edited by Ricdeau - 12/21/08 at 10:01am
post #5 of 11
Quote:
Originally Posted by dubbedmk3 View Post
what about the FSB part though? like he says the test can fail in two ways; one will tell you your FSB needs more voltage, the other tells you the memory needs more voltage. is this true or what?
don't know anything regarding the FSB thing...that's more a CPU test for me, but what do I know
    
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post #6 of 11
Thread Starter 
so whether test 5 freezes half-way or spits out mad errors toward the end >> this could be either FSB or RAM and the only way to know is to change the voltages and find out?

there's no sure-fire way to know which needs adjusting just from memtest itself?
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post #7 of 11
I've never had if freeze on me like the guy says...if I ever had errors, I'd up the vRAM or loosen the latencies...

I made sure my CPU was stable first at a given FSB, before I try the RAM OC
    
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post #8 of 11
Thread Starter 
yeah sounds about right. thanks for the input fellas.

one more question; is there any way to tell what the actual NB + SB voltages are whether it be through software or multimeter?
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post #9 of 11
Quote:
Originally Posted by dubbedmk3 View Post
yeah sounds about right. thanks for the input fellas.

one more question; is there any way to tell what the actual NB + SB voltages are whether it be through software or multimeter?
Some boards will tell you what the default voltages are in BIOS if they are left on auto. Everest has the best selection of voltages and is very accurate so you can see any differences in what you set and what is being supplied for said voltages. You can measure with a multimeter as well. You'll just have to find where the measure points are.
post #10 of 11
Thread Starter 
everest doesn't have the chipset voltages though and the bios just says "AUTO". the next step up from auto is like 1.2 i believe. that being said, i don't think 1.2v is the stock voltage for the chipset.. ? i could be wrong?
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