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Stress testing question

post #1 of 9
Thread Starter 
Question for you AMD overclock guru's. I am overclocking a 3800 X2 Manchester, I am using OCCT & Orthos to stress test my overclocks & am running 2.6 stable now. I see alot of people talking about getting errors in Prime95, OCCT, or Orthos, but when I stress test & go too high I don't see any errors, my puter willl just freeze up, no errors, have to hit the reset button & I'm back up running. Is this common with an overclock that's unstable or do I have somthing else I need to look at. I have really only seen one error show up in Orthos & that was memory related I beleive, (PC3200), memtest showed my memory stable at 241, but errors started showing up at 242 in memtest. In Orthos the one time I saw an error my memory was running at 240, so almost sure that was memory related. I see the computer freeze when sressing the CPU. Any thoughts? I think my temps are resonable 49-50C load. Overall I am happy with the overclock I have now, but want to make sure my stress testing methodology is good.
    
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post #2 of 9
Freezes generally occur because of too little voltage.
post #3 of 9
you might want to back down your memory a bit, freezing is a sign of an unstable overclock, try running at 220-230 and see if its stable, if it is, you can increase it from there, voltage could be to low also
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post #4 of 9
yeah I would set the memory on a lower divider and up your voltage a touch if the temps are OK and see how it goes
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post #5 of 9
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Thanks guy, I am running my memory on a divider now, I'm running 289 X 9 FSB =2601 with mem running at 166, so mem is at 236 right now. Last night I set mem at 133 & bumped the FSB up to 294 X 9 = 2646 with mem running at
    
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post #6 of 9
Thread Starter 
Oops fat fingered the return key before I was finished

Thanks guy, I am running my memory on a divider now, I'm running 289 X 9 FSB =2601 with mem running at 166, so mem is at 236 right now. Last night I set mem at 133 & bumped the FSB up to 294 X 9 = 2646 with mem running at around 218 I think, & had the freeze problem. Back the cpu back down to 2601 & mem at 236 & everything is OK, I don't know if I want to do more Vcore, temps are OK now, maybe lap the HS & processor & see what the temps do & then give it some thought.
    
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post #7 of 9
regardless, 2.6ghz is still a nice OC whether you choose to try higher or not.

It is also possible it your motherboard not being happy with a high FSB, mine randomly restarts if I go above my current clock
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post #8 of 9
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Oh, just thought I would mention, I'm a 1.44 Vcore now. I was stable at 1.35 Vcore to 2500 MHZ, stable at 1.42 to 2565 MHZ, & stable now at 2.44 Vcore at 2601 MHZ, I have been up to 2637 at 1.44 stable for 2 hours with OCCT, but havn't done an testing beyond that, so I'm running now at 2.6.
    
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post #9 of 9
well you can probably push it to 1.5v if the temps are OK
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