XP uses round about 400-500MB more for system automatically on 2GB compared to 1GB and I can run lots and lots of apps simultan all them out of ram.....
It seems to me any option fields and whatever is loaded up into ram using 2GB that doesn´t seem to be same at 1GB. I´m really really happy with 2GB now and I wouldn´t know what windows else could do to inrease performance. My problems here are CPU and hard drive now....