I work with very large images 2-4 gig in size so keep that in mind. I don't play games, this is a work machine only with PS being the main app. I have 5 external fire wire drives for storage and scratch disk space with a 1 terbyte for Time Machine. This is what I am thinking. from Apple 2.8 quad 8 core 2 gig memory 320 HD ATI Radeon - default card From Other world computing or similar 500GB - 1 terabyte HD I NEED A RECOMMENDATION FOR THIS DRIVE 8 GB Ram 4 - 2GB modules Kit Thanks for any help or suggestions!