Going to get a refurbished 27" iMac to replace my 21.5" mid-2010 i3. I'm looking at: Refurbished 27-inch iMac 3.2GHz quad-core Intel Core i5 Originally released October 2012 27-inch LED-backlit display with IPS technology 8GB memory 1TB hard drive NVIDIA GeForce GTX 675MX with 1GB Built-in FaceTime HD camera $1699 OR Refurbished 27-inch iMac 2.9GHz quad-core Intel Core i5 Originally released October 2012 27-inch LED-backlit display with IPS technology 8GB memory 1TB Fusion Drive NVIDIA GeForce GTX 660M with 512MB Built-in FaceTime HD camera $1739 I'm going to had another 8 gigs. But I'm torn between what's more important, the RAM of the GPU or the speed that is with Fusion Drive. In terms of my usage, I'm heavy in photography and more of a casual to light gamer (Starcraft II, Diablo 3 at the moment, gaming about a few times a month, but would like to play more games), but not "hardcore" gamer. What do you think?