One of my boxes runs at 1280x1024 resolution and is running on a $300 computer. I bought a generic Frankenstein computer from Fry's on sale for $130, dropped in a 512MB stick of RAM and a Radeon 9600 PRO. While I don't get a killer frame rate, with sound and all the video settings on low (except resolution) it is definitely playable (probably 20fps or so).