ASUS Rampage 4 Extreme Review
The amount of choice that you have with the Rampage is almost mind blowing. You can monitor your voltages with the ProbeIt. Or with the OC Key. Or on the voltage screens in the BIOS. Or on the monitoring screens in the BIOS. They haven't limited you to a single option if you prefer doing it one way to another.
The screen on the right is a handy guide to knowing exactly the bandwidth available to your graphics card, and to each slot. Yes you can even see what would occur in certain configurations without actually installing it all if you so desire.
Finally we have some more normal screens that even those of you who never overclock will have come across. A staggering BIOS, in an entirely good way.