Posted 11 March 2010 - 07:50 AM
Depends upon OS and applications.
For me, the sweetspot with XP was 2 gigs. During gaming I could max out 1 gig and get stutters due to hard drive activity. Likewise, my laptop has only 1 gig and I have never noticed a problem surfing or using it at work. I don't throw a lot at it though.
Vista 64 works fine with 4 gigs. You can get by with 2, but sometimes Vista just decides to eat up the RAM and hiccup. If you use memory intensive apps (like Photoshop) and have a lot of processes running at once, then you will need more RAM.
WIN 7 64 bit, still playing with it (late adopter). Memory usage seems close to Vista, maybe slightly better (lower requirements). With IE open, it uses a little less than a gig of mem.
Keep an eye on your RAM usage. Open "task Manager" once in awhile and check how much RAM you are using when your apps are running.
I am a retired Ford tech. Next to Fords, any computer is a piece of cake. (The cake, its not a lie)
3770K @4.5, Corsair H100, GTX780, 16gig Samsung, Obsidian 700 (yes there is a 700)