well i honestly do mostly 3D work on my machine, so usually i would have 4 or more applications running at the same time(now for example: i have maya, photoshop,windows media player,zbrush and firefox.
and as much i would like to have an i7 (based on 3d benchmarks) i cant afford it at this point and from the looks of it i wont be able my this new build anyway. so if i can save and get something decent while i wait for prices that would be best.
btw would a 550 power supply do the job or am i going to have to go with 750?