Well, I can't speak from experience because i've never had a gig of ram, but I have had 512 MB for years, and its only PC133 SDRAM. I really haven't had a need for more at all, and I do play BF1942 ALL the time, with mIRC, Norton, and ventrilo all running at the same time with BF1942. My bottleneck is my slow cpu, mobo, and my memory SPEED, not the amount of memory.. 512 seems to be more than adaquete.. I've checked the task manager while running BF1942 and the most memory i've ever seen it use is 198MB, which still leaves plenty for other things... When I get my next paycheck, I'm gonna get 1 GB of PC3200 just because I like the sound of 1 GB, and I can have more freedom with leaving apps running and multitasking.