Vista Needs 4GB ? Not Really , unless microsoft want to do some business tricks on us ... My windows XP only need 180MB for system only ...

Anyway , Big RAMS Bring BIG latency ... I rather choose small RAM but not too small , good enough for my Basic Gamming and Video editing needs for about 2GB . Even i Edit a 1.3GB Flash File only Needs 400MB RAM ... So for 4GB ... EHM ... Servers May Need that for maintaining the Bandwidth before jamming .

The biggest RAM eating Games i Play before only Alexender , which eats about 1GB of RAM .

I think what they mean 4GB is just to minimise the latency by Maximise the Dual Channel Performance when using x64 Windows . 64 bit windows can acess lot and lots of virtual memory . Terabyte ? no problem .