Double bios setup?

Glsec507

Honorable
Aug 17, 2013
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Just purchased the evga Gtx 770 4gb superclocked card...

I don't see a whole lot of info regarding the double bios features. The card in the box states not to switch without flashing unless otherwise told to by evga but then it also states the second bios provides better performance.

So what's the deal? Is the secondary bios factory equipped with more performance or does that require a flash from somewhere? Can I turn off my system, unplug it, and flip the switch and boom a faster card or do I have to do more than that?

Also there are two tiny switches not just one. Not in front of it atm but I believe they were labeled 1and 2 and both were in the off position out of the box.

Can someone please tell me what the deal is with this?