The fastest model that Apple will sell you is a 12-core 2.93GHz model; the 3.33GHz clock speed is 13.6% faster than 2.93GHz.
The 12-core 3.33GHz model makes an apples-to-apples comparison possible between these three machines:
- 4-core @ 3.33GHz;
- 6-core @ 3.33GHz;
- 12-core @ 3.33GHz.
Can you believe that the 12-core model is the slowest machine with Photoshop?! That’s a fact, and it’s the fault of Adobe’s code, not the Mac Pro.
But bottom line is this: if you’re a Photoshop user, the hexacore is your best choice, so long as you don’t edit monster files, where max memory becomes the dominating factor.