Ok basically, my question is that, if I get 1 512MB stick of RAM will it be compatible with my other 512MB stick? They're both made by different brands, so will they work correctly?
I'd personally use this opportunity to lose the old PC2100 RAM and replace it with new PC3200 (or better) RAM. You'll need two identical sticks for Dual Channel mode, which are best bought a kit to save a little money and ensure compatibility.
So should I get 2 x 256MB of RAM or 2 x 512MB of RAM? How much does 2 x 512MB cost? It's not my money that's going to be used it's a B-day present for me so it can't be too much. I'm gonna be 13! Also PC3200 is the highest my motherboard supports.
Cool, well the overclockability isn't going to help because I don't know how to overclock RAM and I couldn't find anything on google.
Yeah i'm going for speed because I have to turn AA off to run UT2004 perfectly at the highest ingame settings, the jaggies annoy me alot though. It's weird my other games like Half life 2 and F.E.A.R run fine with AA on though.