Originally posted by Swafeman
1024 - 2048, pointless pretty much, unless your editing video and need a whole movie in ram to speed rendering etc
Try opening up four 1600x1200x32bit, 720dpi images (which to be completely fair is relative small for most content intensive operations) in Photoshop at the same time and do a few copy and paste of entire images and see how much of tha 1GB you've left...