Ste: well I guess I just want to see how my P5B Deluxe compares to its cheaper brother. Stupid uber-looking black PCB made me fall for that mobo lol.
j369852147412: the DS3 is an excellent overclocker, according to the reviews I've read (I can look up the links when I get home if you want).
As for RAM, why do you want a single module? Two modules will allow you to use a dual channel configuration, where memory bandwidth is dramatically increased.
Concerninc OCing RAM, there's not too much difference between the good brands: Corsair, OCZ, gSkill. Mushkin, Crucial... any will do. Be sure to get at least DDR2-800 though, since it will give you more room for overclocking. A low latency (CL4) might be nice, too, but they're a bit more expensive.
Finally, 1GB should be enough. Unless an app is using almost all available RAM, it won't really limit your OC, and pardon me for saying so, bzflag. Go test it out: run your favorite game, then ALT+TAB out of it, open the resource manager and check how much RAM is being used. Most of the time you'll see around 700MB - 800MB (half from Windows+background apps, half from the game). If you're on a tight budget, buy 1GB now, and upgrade to 2GB in a few months.
SuperPi 1M: 29.6s - 3DMark06: 8616
The Geek Test v3.1 Score: 36.3% - Major Geek