the 2GB RAM max is a limitation of 32 bit operating systems. If you want to use more available RAM then go to a 64 bit hardware/OS setup. That will get you up to 4GB of access. Right now the 64 bit motherboard / processor combo, and you will have to find 64 bit compatible drivers for all your hardware). Apples Mac G5's with OSX have a 64 bit system right out of the box if you lean that way.