I just ordered my mac pro! with nividia.. with ADC discount.. about 2400 bucks.. ok.. ram.. i'm running adobe lightroom, photoshop, iphoto, iweb, office 2008, and web should i buy 4 gb (2x2) and make it 2,2/1,1 = 6 total or buy 8gb (4x2), and make it 2,2,1,1/2,2 = 10 total or buy 8gb (4x2), sell the 2X1 stock, and make it 2,2/2,2 = 8 total? do i need 10/8? or is 6 sufficient? and by sufficient i mean, my computer will not even maximize that amount b/c i don't ever do video or music editing? Thanks!!