Here, this is the correct place to go on the passmark site to see the "highest-performing CPUs" list:
PassMark Intel vs AMD CPU Benchmarks - High End
Moral of the story? Get an Intel Xeon E5-2687W if you want balls-to-the-wall performance -- it's got a passmark score of just over 17,000.
As far as performance per-dollar goes though, your AMD is still pretty high up there -- an overall ranking of #24 amongst all benchmarked processors.