Sorry, but I don't understand your guys' opinion on this.
The 680s are more cost effective and more powerful. Newer high-end games are going to be able to utilize SLI technology, and older games or ones that can't really use it will still run fine on even just one 680 (like Minecraft, or something).
So how exactly is the Titan a better option??? (No, seriously, feel free to contribute some relevant "real world" results where one Titan outshines two 680 4GB cards instead of gut instinct opinions.)
The benchmarks speak a lot louder than personal preferences in my opinion, and those minimum FPS scores in the Heaven benchmark have a lot to say too, even if it's just from the loading capabilities of the higher video memory bandwidth of having two cards.
If the OP is looking to get a second Titan, then that might be the better option for him, if he's only wanting to run up to two cards.
No offense to those of you running them, but I don't see the logic in going with one Titan when two 680s or even two 670s are an option.
Edited by Wrend - 3/31/13 at 8:24pm