Yep, you just choose the frequency and set the voltage accordingly. This is incredibly easy to setup in a Gigabyte board.
I just noticed that those memory modules have slower than average timings:
5-6-6-18
These have the "standard" 5-5-5-15 timings:
http://www.newegg.com/Product/Produc...82E16820231166
These, when in stock, are quite sexy:
http://www.newegg.com/Product/Produc...82E16820231246