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Why is my system only using part of the memory.

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Ram Guy,


I have 4 x 1066mhz PC2-8500C5 memory sticks from two different batches.


The problem I'm having is Vista 32-bit shows available memory of 3326 MB; I've applied the MS patch for Vista 32-bit as recommended on posts elsewhere on this site, so I should see a minimum of 3500 MB memory, right?


In addition, my system freezes occassionally after the CPU check.


I've tested the pair in another Striker Extreme mobo (bios 1305) and gotten a TESTMEM error on the LCD for one of the sticks...in fact, I can't get past that point to run memtest.


What should I do next?




Striker Extreme w/1305 bios, Intel QX6850, 4 x 1GB Corsair 1066mhz PC2-8500C5, 4 x Raptor HD (10,000 rpm), XFX GeForce 8800GTX, Creative Labs Xi-Fi Sound Card, Black Magic Design HDMI Capture Card, Sony Blu-ray Drive

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  • Corsair Employees

Please make sure that you have the latest Bios version and then load setup/optimized defaults and set the Dim Voltage to 2.2 volts and then set SLI Ready Memory to CPU 0% and set the CPC/CR to 2T, then test with http://www.memtest.org! If you still get errors, please follow the link in my signature “I think I have a bad part!” and we will be happy to replace them or it! However, if you get errors with both modules that would suggest some other problem and I would test them one up and or in another system or MB to be sure. In addition, with some MB's (Mostly ASUS) you have to disable legacy USB in the bios when running any memory test.


If they all pass one up and you are only using two modules total then try it again with both installed in the other two slots.

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