Currently own: 24" 3.06 imac 8x SuperDrive (DVD±R DL/DVD±RW/CD-RW) NVIDIA GeForce 8800 GS with 512MB memory UPGRADES: 4gb ram / 650 gb HD Bought it for a great price. Now apple is knocking on my door again. I also have a 13" mbp which I was going to get an external monitor for, but now the new iMacs eliminate that need. Are the graphics cards comparable to the new 27" models? Please Help!! Thanks.