I've got the M3A78-EM mobo (http://www.asus.com/Product.aspx?P_ID=KjpYqzmAd9vsTM2D&content=specifications), based on the 780G chipset, that claims to support 140W CPUs (like Phenom II).
However, I read many accounts of people trying to plug a 125W or 140W CPU into a 780G-based mobo, and frying the mobo seconds after boot-up.
I wonder if anyone has successfully done this with this particular board.