Ok,
these pics aren't of my BIOS settings (I found them in
this review of my motherboard) but they show lots of settings that I'm not sure what to do with. I'm just using them to point out the options I'm unsure of.
I put red boxes around the things that I'm not sure what to do with:

I'm not sure what the "Fail" thing means. I've seen it on mine too. I'm guessing it just means that the ram isn't running at 1.8v, so if you are overvolting, that test will "fail". But still... I don't know for sure.

These settings I have no idea what to do with. I disabled the C1E and TM2 settings, but I don't know if thats 100% necessary when overclocking, or if thats just something that people do so they have more control. I personally wouldn't mind it if my system throttled itself back when it wasn't under much load. I just don't want it interfering with anything else.
EDIT: Also, I just realized my BIOS has a "CPU EIST" setting right below the TM2 setting too. I have that disabled as well. I'm pretty sure that's SpeedStep.

Not sure what the (G)MCH setting is for. And this is what my voltage adjustment options look like. Notice how this guy has his voltage at +0.4v.

These settings are bit obscure too. I don't know what they do. I haven't noticed much difference between "Option 1" and "Option 2", but BIOS text looked a little glitchy when I changed the performance enhance setting from standard or turbo to extreme. So I don't mess with that setting any more. I'm not sure what it does though... it doesn't seem to effect my timings.
Any input is welcome. I wish gigabyte had a good community forum like DFI had\has.