I have 2 pairs of RAM modules;
1. OCZ Gold Edition (2x512MB)
(PN:OCZ4001024ELDCGE-K)(http://www.ocztechnology.com/product...l_channel_gold)

2. Samsung (2x512MB) (M368L6423ETM-CCC)
(http://www.samsung.com/Products/Semi...68L6423ETM.htm)

I have an Intel D875PBZ motherboard. These 2 pairs don't seem to work
together. If I use all 4 modules at once they don't work. My computer keeps
restarting at random times & after the restart I get an error message saying
the computer has just recovered from a serious error & windows has made an
error report and stuff. However when I use either one of the pairs it works
fine without any problems. I have increased the voltage to the maximum my
motherboard allows which is 2.775V & I have disabled ECC. Anything else I
could try out ?
Oh & I downloaded this memory test from www.memtest.org & when I ran the
test with all 4 modules installed I got a failed test #5. However when I ran
the test with either one of the pairs installed (only 2 modules) the test ran
fine. Maybe that could help to find out what I could try so ya.

Thanks for any help.