I did some quick benchmarks of my lightly overclocked 4930k. I plan to upgrade from 12.04 to 13.10 this weekend. We'll see how the numbers change. Its a nice processor, but overkill. I came across some gift cards and money this Xmas so I figured I'd snag one before the x79 platform is depricated. I've also got 32GB RAM in the mail. Woot! I have a Samsung 840 Pro 512GB SSD on my desk here at work. Perhaps I'll see if boss man will let me take it home ;-)
I also have a 4930K workstation at work. I run 5 VMs continuously and have no speed issues.