New Revit CPU to beat - Intel Core™ i7-3960X

6 cores with Hyperthreading, up to 3.9 GHz burst mode, 15 MB Cache - this thing is awesome.

And the benchmark results to match:

results via this link

More specs at:
Intel� Core™ i7-3960X Processor Extreme Edition (15M Cache, 3.30 GHz)