I used this software when i started to OC my i7 930. I am using a Ga-x58-ud5 but still its gigabyte so it should be the same.
From my experience, the overclocking of this software is pretty bad. It doesnt clock the RAM as high as you could do it manually, first of all.
Also, the voltage is up in the sky even if you sightly OC. My i7 930 was running at 3.36 ghz (160clock) with the voltage going over 1.37v. With that much voltage someone can setup a 4ghz OC on i7 930.
Anyway, my point is that Easytune 6 (smart 6) is bad. Although it works fine in overclocking, it is not really good compared to a manual OC