Form Factor and Base Configuration

I need a computer that does a variety of tasks from surfing the internet, word processing, gaming, sound, and multimedia. I would need the computer to be a desktop because they are more powerful and I don't need the portability. I like the Dell Studio XPS 9000 because it has plenty of hard drive memory 500 GB thats double what my current computer has. It also has a nice graphic card nvidia 512 MB for gaming. I would choose the base model PC because it is the cheapest and still has ample memory (3GB) and speed (2.66 Ghz) for my needs. I mainly use my computer for downloading music, surfing the internet, and word processing. You can view this computer at this website http://www.dell.com/us/en/home/desktops/desktop-studio-xps-9000/pd.aspx?refid=desktop-studio-xps-9000&s=dhs&cs=19