ASUS P7H55D-M EVO Review
 

One thing it did lack was that it couldn't match the H57 model in overclocking. This was a bit surprising as both boards use ASUS's Xtreme Design and share a very similar VRM area. Still, the ASUS P7H55D-M EVO was only 200MHz shy of the 4.5GHz overclock of the more high-end board and it was able to produce the third best overclock this chip has seen.

http://www.overclockersclub.com/revi..._p7h55d_m_evo/