I'm buying the same computer but ordering it from Dell because I need to add a better PSU. I got some excellent advice about what I needed from forum posters in this thread...(advice - click on newest to oldest to avoid all my bitching, lol)

 http://forums.pinnaclesys.com/forums/post/357611.aspx

 Good luck. I'm looking forward to upgrading my computer so I can shoot and edit in HD.

CJ