3.06 iMac, upgraded to ATI video card = $2,144.00 2.93 iMac, upgraded to 3.06, 1TB, and ATI video card = $2,104.00 $40 less. Not much, but it's something. (This is Education pricing. Standard pricing is $2,249 each.) My question is, is there any difference in these two machines, as specified? Otherwise, why not save the $40?