They can not play games that require system 2GB RAM to run like Never Winter Nights 2, some other PC games which require more system RAM. Imagine if PS3 and XBox 360 system RAM and graphics cards could be upgraded? That would be awesome, hey. Not just have to rely on a stock console for 6 or 7 years that can not be upgraded much at all. PS3 you can upgrade the HDD for storing downloads and game data but that is not a big deal.
^Discuss people.