2 GB Page file, I know it's more then required but I m staying on a safe side
for light home video editing, Windows Movie Maker is even enough, with 256 MB RAM
The speed at which Premeiere applies filters is not RAM dependent, but CPU & effect dependent, the motion effect is applied fast as it has less work to do while the Keying & Matte are slow, as there is lot of calculation, upgrading your RAM or CPU won't give U much of the performance increse
ennonmai
exporting a Movie with premiere is compleately CPU bound, get a Dual CPU system & see the difference, the WMV 9 codec takes very much time, best codec I have found is DivX 5.21 with 4 mb bitrate & the required resolution