I complained some things today to Asus Germany, what makes me sick.
At my Asus P8Z77-V Pro I donīt have the option to change the VTT Voltage inside the Bios. Somebody told me, that from the DELUXE this Option is available.
This limitation is so stupid and disappointing for me, because at Boards for the same or less price from Gigabyte or Asrock I would have this function.
I see screens, where people use Asus Mem Tweakit with a Gigabyte UD5. If I try something like this on my Asus P8Z77-V Pro it will not work. I must use Memory Tweaker for Intel Chipsets from this Forum.

I am always using Asus Boards and also recommend them in German Forums. To tell You the truth, with my next build I need to make a better research and I need to choose better.
Will never understand why Asus do something like this.