I have 512 MB currently and it's running with 8% free physical memory. How I don't know, but it is. Gateway 614GE, here's the specs: http://support.gateway.com/s/PC/R/600GxSeries/4410sp3.shtml I tried to browse myself on newegg.com but there's so many other specifics on there that I'm a little lost. I know I can't use more than 2 GB according to the website, but as far as the other specifics I need a little direction. Help guys?