It shows in "VR". With their new stuff that only renders what is shown in vr, it is faster in vr. In normal gaming and applications, it wouldn't be that much faster.
You don't want to raise the voltage too much either. Other than producing heat it can degrade the processors life span if its too high. That's why most people keep it under 1.3V.
The Bequiet Pure Rock looks better, is quieter, and performs a tiny bit better for nearly the same price.
(This is the only cooler from Bequiet not hard to mount.
I prefer my good 'ol passcodes, but the way technology and security seems to be developing, that "takes too long to type in" and now we need quicker possibly more insecure ways to protect our stuff.
The Zotac Amp! Extreme and EVGA Classy are both top of the top end.
I got my Zotac Amp! Extreme to ~1500 mhz easy with only around 75C, so that just shows you. They both are quite a bit more expensive than the others though and I don't know if the price will come down all that much after Pascal.