It's not that much of an upgrade from what I had before. My dad needed a new computer, so I sold him mine and spent the same amount on a new one as I did a year ago.
I've got a P4 3.0C with 1GB of RAM, Asus P4P800-SE motherboard and a Radeon 9600 (one of the newer ones with 256MB of VRAM... I couldn't justify spending $150 more for 10fps extra that you get with the 9800).
I also got a 200GB hard drive for porn.