What makes a Mother board better from another?

[Villagestore]

I'm looking at two different mother boards at the moment and both will work for my build but the difference is $100. I looked at their specs and they look fairly similar so what makes the price difference in these two?

http://www.newegg.com/Product/Product.aspx?Item=N82E16813131837


http://www.newegg.com/Product/Product.aspx?Item=N82E16813131821

The CPU I'm looking at is a i7 3770k Ivy bridge 3.5GHZ and I don't want to end of cheaping out on the MB bottle necking my computer.

 

[rolli59]

In this case the fancy plastic shielding on the Sabertooth and better power regulation and therefore the possibility to squeeze out that last 0.1 GHz of overclock from the CPU.