Yeah you are right edit myself.... I was wrong. I was thinking of the Z68 Motherboards instead of the Z77 motherboards.
But that still doesn't change the fact that 3 way SLI is not possible on this board.
I disagree about the overclocking features..... a buddy of mine owns the UD5 and he is missing several setting that I do have. "We compared! As well as I overclocked his board" Now I can not argue which settings they are exactly. I don't own his computer nor do I keep it here for exactly that purpose. (Just to justify me) but there are options in his BIOS he does not have that I do in mine.
The only other change that I think would be the difference is which BIOS version he is running. If he is running a very early version of his BIOS that would make sense why some options are present in mine and not there on his.
The G1.Sniper series are NOT the high-end clocking boards from Gigabyte. They are the GAMING boards(GIGABYTE G1.Sniper 3 Gaming Motherboard as Gigabyte calls it). The UD7 and SuperOverclock boards are the real OC boards, and they do not exist for Z77 at this time, so the UD5H and The G1.Sniper 3 are the only options. G1.Sniper 3 is for 3 and 4 cards, and has the nice added audio and lan chips and two added SATA ports, and the UD5H doesn't have those, but has FireWire added in the rear I/O. THey both use the same VRM sections for both CPU and memory. BOth have Dual NICs, and both use INtel for one of those LAN ports.
BIOSes are near identical. There is NO missing feature that the G1.Sniper 3 has that the UD5H does not, except one. The only difference, really, is that the G1.Sniper 3 has
slightly better fan control options, but I do not consider that an "overclocking feature", and it's only one extra fan control(for one header).
You are very right about the multi-GPU options...only 2-card SLi on the UD5H.
Don't get me wrong though, there's nothing wrong with the G1.Sniper 3, and personally; I like it better than the UD5H, but the UD5H is by no means any worse off for most users(unless you want triple or quad cards, or need teh extra SATA ports). As to the whole bridge chip thing, I do not like them, as they actually lower performance a little bit in some situations, due to added latency of the PLX PEX8487.
I really had to think about cons for the UD5H. THe G1.Sniper 3 offers more, but it also costs more($60). I think the $60 in added cost is worth it, if you need those features, though.