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Memory Unstable?

post #1 of 9
Thread Starter 
So I've overclocked my computer to 3.7 GHz and it has passed over 100 passes without freezing. However, my computer always freezes after several hours of Prime95 blend test. Would this mean my memory is unstable?
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post #2 of 9
What are your CPU temps during Prime95? If you think it is your memory you can run memtest to see if it is stable.
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post #3 of 9
try lowering the RAM speed and/or loosening the timings. if that clears things up then yeah you need to work on the memory

:edit:
since you're running 4 modules it probably won't be stable at stock timings and speed without a voltage increase to the RAM and memory controller
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post #4 of 9
Thread Starter 
I've went from 1.8V to 2.0V. My CPU temps during Prime95 are in the low 50s whereas the LinX run had them in the 60s.

How would one adjust the timings? I've always left them at auto since I've had no experience with tweaking memory timings at all.
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post #5 of 9
Try running 30-50 passes of Intel Burn Test. Prime95 is horrible and you don't have to run Intel Burn Test for 24 hours. All you need is about 30-50 passes on maximum setting and you will be fine. You can always run more. Good luck.
    
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post #6 of 9
Thread Starter 
Quote:
Originally Posted by Vipr3 View Post
Try running 30-50 passes of Intel Burn Test. Prime95 is horrible and you don't have to run Intel Burn Test for 24 hours. All you need is about 30-50 passes on maximum setting and you will be fine. You can always run more. Good luck.
Doesn't LinX do the same thing as IBT because it uses linpack? And I heard that it's important to test both memory and core stability because they may not both be stable, which I believe is my current case.
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post #7 of 9
Prime is far from "horrible", but it is a much slower process. I'd run 20+ passes of linx first, with nothing else open and max memory selected. If it passes that (check that all the GFLops numbers are roughly equivalent) you're off to a good start, then you need to run Prime for 12-24 hours to ensure stability.

Ram timings are set in bios, not sure about your specific motherboard. If they're stock you might just try bumping the voltage to ram/memory controller, not sure what the voltage they're looking for is. Also are you OCing via BCLK? You almost definitely will need to downclock your RAM if so.
Edited by ocpokey - 4/21/11 at 4:06pm
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post #8 of 9
Thread Starter 
I downclocked the RAM after unlinking it from BCLK. It's just at 1:1 to the FSB right now, which is 462.5 MHz (925 MHz DDR2). Would it be better to go to 4:5 to make it easier to stay stable or would loosening timings (bumping each number in the timing settings up by 1 at a time, I'd assume) allow me to stay at my current RAM speed?
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post #9 of 9
Maybe. Loose them by two notches and try some linx/IBT (they use the same linpak so they do the same just different gui). If it is stable lower the values.
There are several other things to consider like subtimings.
My RAM doesn`t like 7-x-x. If go for 8-x-x it is much happier.
So it could be that you are fine with even one number higher.
But to make one step@a time i would raise them 2 notches and test.
I did several tests @my system and the showed that a bit looser timing showed better results than lower clocks.
So after you are stable check your bandwith with maxxmem or what you prefer.
Edited by Mr.Eiht - 4/21/11 at 6:58pm
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