Ken's link is good. But what ever RAM you get, run Memtest86 on it over night. I see so much flaky RAM these days. Like 1 out of 16 sticks is bad. In one case I had 3 out of 8, and then when those were replaced 1 more bad (Crucial later admitted they had a bad batch). It doesn't matter the maker. After finding a couple bad from Corsair I went back to Crucial (since both Tyan and Supermicro recommend them), but same thing there. It's just that today's memory densities are so high, there's bound to be flaws in the manufacturing.
I can relate to this.
Two years ago some ram died after it was removed from a system and placed back in during some other diagnostic testing. After buying two new sticks, there were bootup problems, memtest showed errors and i returned the ram for replacements.
AFTER the THIRD replacement set, i finally had a pair of sticks that were error free and have been running in the system ever since.
I was starting to wonder if the motherboard was frying them along the way.
