power, but minus the desktop setup, then go with mobile components. Yea its more pricey, but you wont have to worry about powering it. A OPUS 320 will work fine. I built my setup for high multimedia use. 4 screens, etc.....
HiJackX1 UAMCB w/ The Tobiathin Core Android/Win 7 hybrid system!
4x 10inch Tablet
1x Win 7 / Rear Entertainment PC
ft/ Web Server Streaming