Intel i7 920, 4 core, 8 threads, 2.67GHz
ATI 4870 graphics card.
12GB of Ram
2TB WD Black 7200rpm system drive
2x2TB WD Black 7200rpm drives for photos
The photo drives are backed up via USB to an additional 2x2TB WD Black drives.
All this is backed-up offsite via Crashplan.
Plenty fast for Photoshop, Lightroom and Capture NX2. In Photomatix there is a bit of a slowdown while working with some options, but I haven't spent time figuring out where the bottle-neck is.
i have i-2500K running at 3.9 on air ( have a duck going outside for cold air ).
16G RAM at 8-8-9-22
Nvidia 650 Ti at 1200/980
15T in Raid + 4T external