I have this setup (Cost me 700 smackers just three weeks ago, but my previous machine was at it’s break point anyway and even if I had bought from the cheapest retailers, the delivery costs would’ve made it that high anyway), self-assembled and all.
Can go ULTRA HIGH with Fallout 3. Previous machine with a GF7600GT had to have minimum settings to even start, and even 4-year old games like Battlefield 2 turned into a slide show if I happened to be under an artillery strike.
Mobo: P5Q Pro
E8400 Core 2 Duo
Sapphire Radeon 4870
500Gigs of HD
Some SATA DVD drive
Built into a Sonata Antec III case with a 500w power and decent (read: Quiet when I want to) fans.
4 gigs of DDR2 ram (@800mhz), in case 7 or Vista ever show up on my machine.
I could’ve saved on the DVD drive, but my previous one had a case of thinking it was a Formula One race car. Well, at least I had a router, a monitor (19") and speakers ready.
Hades: Certain video formats also require quite the beast if you’re into high definition video. (Hell, I had h264 encoded videos lagging behind the audio.)