That's a "one button overclock" option. I don't know exactly how sophisticated it is, but MSI have probably tested a bunch of CPUs and motherboards and have found an overclock that's widely stable which you can simple enable in the BIOS to save mucking around manually. It's not a bad option to try. Because every CPU is slightly different, following a good OC guide yourself and spending some time finding the sweet spot on your system would likely net you a higher overclock, or the same overclock with a lower voltage (=less heat). Depends whether you're prepared to invest the time.
I assume you have decent cooling too?