I challenge you to name one current game where you think SLI makes a significant difference. I use a single EVGA GTX 680 4 GB after coming from duel SLI MSI GTX 470 1.25 GB. For modded Skyrim it is memory that counts. I have yet to see any game a single GPU (though high powered) can't handle (tosses down the gauntlet). Having SLI with two screaming GPUs only really gives you bragging rights, like having a large penis. Size really does not matter, it is what your do with it that counts.I know you posted this a few months back but I saw your gauntlet laying there and had to pick it up. Im not sure about 1080p gaming but on a 2560 x 1440p monitor I can't think of a game released in the last year or two that doesn't benefit from a second GPU. I have 2 GHz Edition 7970's with a i5 3570k @ 4.8ghz...  Arma 3(Cant max it out), Crysis 3(Cant max it out), Sleeping dogs(cant max it out) ,all 3 Batman Arkham Games(Can't max out the last 2), BioShock Infinite, Dishonored, Tomb Raider, Skyrim using STEP (even with the micro stuttering its about 30fps better than one 7970,) Metro Last Light, Battlefield 3... I could go on but I think that should be sufficient. Im not saying that multiple GPU set up is for everyone.  But a single Titan(6gb of VRAM) on Crysis 3 at full settings averages 45fps at 1080p.  And the lifting is only gonna get heavier from here on out.   Its pretty much a law that you will always end up with more performance for less money if you buy a second card instead of upgrading to any new single card (Unless you're jumping from 3 or 4 generations back in which case the monetary difference will be much bigger). Now there are caveats built into the performance benefit you get from a multicard rig... the configuration can be tedious for some and a few games (such as Skyrim) don't play nice with crossfire/SLI but those instances are getting pretty rare.   I just wanted to make the point that a CF/SLI rig has more use than for bragging rights. And while configuration and driver conflicts can be a headache sometimes (and that is the best argument for getting one high dollar card over 2 cheaper cards,) the performance gain is undeniable. If you are playing games at anything higher than 1080p, currently you're using a CF/SLI config or you are below 30fps on most modern games.