I am building a new PC for business purposes as a pseudo-server (file storage/backup, software that is CPU-intensive, ala, number crunching, etc.). This is not for gaming. It may not even have a video card unless we decide to turn it into an office HTPC at some point (a possibility).
Bottom line: which CPU is better for number crunching business applications. I've seen plenty of game-related info about these 2 CPUs but nothing in the way of standard non-gaming usage.