My Dell had 512MB from the company. When I got World of Warcraft, I had to update my video card but also added an extra 1GB of memory. I was going to go for 2GB just so I wouldn't have to update for awhile, but RDRAM is quite expensive compared to other types of RAM.
~Mike
for most gaming situations, 380 odd mbs fits what you *need* meaning that 512mb is pretty much NOT overkill, and that it is ideal <necessary>
What I can tell you is I have 1gb ddr2 whatever whatever, and there's no looking back <also used for server etc.>