ASUS Z9 PE-D8 WS Dual Xeon Insanity E5-2660 & E5-2687W
3D Mark Vantage
It wasn't that long ago that all the world records were held on Skulltrail systems. How things have changed. There is barely a gnats chuff between the scores in the Extreme preset, and even in the P Score, the area we'd expect the veritable cornucopia of cores to impress, the i7-3960X edges ahead.
3D Mark 11
If Vantage was a close run thing, then 3D Mark 11 is taking things to new heights of closeness. A Hexcore CPU on a Rampage IV Extreme is inseparable from 16 cores of Xeons. Both impressive, and yet disappointing.