The Top highest O/Cs are being compiled and I thought some of the new builders and buyers might want to know what the top performing Motherboards are.
I completed my Study of the new 955 Motherboards and I compiled the top 4 best overclockable Motherboards in the AMD Stables. And they are starting with Number 4.
4. MSI790FX-GD70 
TOP 4 AMD O/C able Motherboards
3. Gigabyte MA790XT-UD4P
TOP 4 AMD O/C able Motherboards
2. Gigabyte MA790FXT-UD5P
TOP 4 AMD O/C able Motherboards
And the Number one top overclockable board for the AM3 series 9x5 is....
1. ASUS M4A79 with the highest overclock of a 955 @ 4.1 ghz. On air Xiggy and an airy Case.
TOP 4 AMD O/C able Motherboards
If you took the results from the 955 overclocking thread it may not be completely accurate as no one has the DFI(except some unknown guy), or Biostar boards which are known to be great overclockers AND nobody has the crosshair III board which I'd expect to overclock a little more than M4A79T Deluxe on air since it's ASUS's flagship AM3 board.
Also, at identical voltages, my Mugen 2 makes my cpu run cooler than the xiggy when I have slightly higher ambient temps. I can't overclock as high as others probably because I can't overclock my CPU-NB voltage and my NB is limited. Regardless of that, the Foxconn board still isn't that great. I can easily get 3.8 out of my 955 though.
One last thing.......if you look at the thread you'll notice that the top overclocked ones are on M4A79 Deluxe motherboards which are AM2+/DDR2 motherboards. Phenom IIs achieve higher overclocks on em because of what me, and others, believe to be matured BIOS's. The Gigabyte UD5P is the real AM3 top overclocker.