Re: Z77 SABERTOOTH or P8Z77-V PRO
I like the p8Z77-V PRO better. The extra covers over the board look like a pain and probably don't do much for cooling as none of the other stuff on the board gets hot enough for it to matter. Both boards likely OC about the same.
the 12+4+2 refers to the power distribution of the motherboard. It just means that they separated out more parts and should in theory work better. Ivy bridge isn't a high power draw so it's not as big of a deal as it might be on say Sandy Bridge E.