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Old 2007-03-20, 09:38   #1
xtreme2k
 
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Default Whats the best stress test settings for RAM stability?

There are quite a few settings I can use in Prime95. What is the most stressful for memory?

I need to test 4GB for stability. Lets say the OS takes 800MB RAM (yeah vista x64), I run 2 copies of P95 on custom. 4096-4096 FFT 1200MB each. Is this stressful enough? Or should I use 8-4096 FFT?
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Old 2007-03-20, 09:50   #2
Cruelty
 
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what CPU do you have?
AMD X2 - I suggest 2 copies of custom/blend test as you mentioned
Core2Duo - one instance of Small FFT + 1 instance of blend test

Last fiddled with by Cruelty on 2007-03-20 at 09:52
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Old 2007-03-20, 09:57   #3
xtreme2k
 
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Its just a Pentium D 930.

I normally run custom. Is 8K more stressful or 4096K more stressful? Is setting ram to a high amount stressful or smaller amount?

I know the CPU is stable. Just added some new ram and wanted make sure it runs well with the system.
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Old 2007-03-21, 22:32   #4
Cruelty
 
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Quote:
Originally Posted by xtreme2k View Post
Its just a Pentium D 930.
I don't have any experience with dualcore P4. I would first make benchmarks using single core and then run them again with stress test running on the second core. In case of C2D CPUs there is a performance hit when using large FFT stress test on another core, so to test stability of RAM I choose blend+small FFT, to test CPU stability alone I choose 2 x small FFT - in case of your CPU you'll have to experiment a little bit
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Old 2007-03-22, 18:34   #5
VBCurtis
 
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memtest86 is a nice utility that runs outside of OS- it used to be a bootable floppy back in the day, not sure now. It runs quite a few diagnostics on your entire memory space over the course of hours. I use it when testing new overclocking settings after I am sure (via Prime95/LLR) the CPU is stable.
Google should locate a burnable bootable image to run it.
-Curtis
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Old 2007-03-27, 22:40   #6
Ethan Hansen
 
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Get the "+" version of memtest86. It supports most modern processors. If your system survives several passes through the extended test, all should be fine from a memory standpoint.
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Old 2007-03-28, 20:38   #7
E_tron
 
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memtest86 seems to be the standard. Use the "+" version, because plus ussually means better .
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