$7K Mac Pro Is Only 8% Faster Than An iMac
 

Yes, but does the iMac come in a neat black trash can form factor? That right there is worth the $4,100 price difference. "It should be no surprise that the new 8-core Mac Pro is the fastest Mac we've tested, but it was only 8 percent faster overall than our previous champ, a [configured to order] 2013 27-inch iMac," Macworld's James Galbraith wrote. "That custom system has a speedy quad-core 3.5GHz Core i7 processor, a 3TB Fusion Drive, 8GB of RAM, and Nvidia GeForce GTX 780M graphics." The iMac Galbraith describes, by the way, costs $2,699 — or $4,100 less than the new Mac Pro in question.

http://www.hardocp.com/news/2013/12/...ter_than_imac/