ASUS Rampage II GENE LGA 1366 Intel X58 Micro ATX. Nop no usb3 support.
Just out of curiosity, why you won't base your build on p55?
I want the qpi, the hyper threading, and most of the the full 16x, 16x SLI or Crossfire. I also want USB 3.0 so this MB will be a bit "future proofed" in order for me to eventually upgrade the i7 920 that I am going to get. The X58 will be hexa core compatible according to articles in Toms and the P55,H55,H57 will not. Thus even though the X58 is about a year older, it is still more technologically advanced than the P55 in more ways than not. That plus the price points are not too much so why not get the bettwe platform?