I have (well, the system in my sig), and it supports up to 8 GB of RAM. I have 4 gb now, and I've seen tons of people with 8 GB. I could spend the ~$40 to get another matching pair, but I really don't understand why... (I don't plan on it atm, just curious).
Why are there so many people out there with 8 GB of RAM? Lots of you have it, why so much? I've never bee close to filling up my 4 GB, and can run (in Vista) more than one graphically intensive games (like Crysis and Call of Duty 4) at the same time, with plenty of RAM to spare.
So what about 8 gigs am I missing?