I just got my 2nd gpu today, to complete my grid setup.
I just installed it, came with the ek water block too, for $400 it was a good deal.
Though I had to take the block off and install the stock cooler for the time being, I don't have a pump or rad for it or anything yet.
When the time comes for that I'll have to buy a 2nd block, I might just do that in a few days.

Oddly enough the thing starts up pretty silent like, even though the bios ver is the same ver.
I haven't dumped and compared it yet though.
My original one goes full throttle on bootup, it's very very load.

I'm working on my own bios modding program.
Just for kicks.
I'm using ahk script to doit, right now it just reads off some strings and hex values.
I haven't really taken it very far yet.
I think that'll be one of my hobbies for a while, when I get bored I can sit down for a bit and work on that from time to time.

Cant wait to hard mod this card and sli it ^^, just gotta wait though for my board before I can think about that.

Its nice the 680 and 770 lightnings have dual bios though, a switch for them.
This will make bios modding alot easier in certain ways (no more bricking and shorting pins to get to dos).

The bios sure has alot of free space too, maybe even enough to run an small os from.