whatwid

If you want multiple GPU's in the same Operating System (Windows, Mac Os X, Linux), you need Nvidia SLI, which requires two of the same cards and a SLI bridge. Even with SLI, you can only still use one card's outputs. There is no way in "adding" any besides upgrading to one with more than one output. What do you mean with a dedicated PhysX card? Almost every gaming GPU from Nvidia has PhysX, it's just a gaming mechanic. EDIT: You can take heat off your GPU by SLI, yes. You do need 2 of the same cards to assure that it actually works.
EDIT EDIT: (I forget stuff easily ): You also need a bridge probably, but they're cheap. Most people that make GPU's sell them (EVGA and ASUS etc.) 

Ya the 780 kind of nukes everything.
 
This is the first time in a long time that the *80 has been a justifiable upgrade over the *70... It's pretty beastly.

780 = more frames
 
770 2gb = adequate

780 is more powerfull, and you wont need over 3gb of vram

How could that happen? A fault during the charging would be my first guess. Wrong voltage or something like that?
 
I've never seen a S3 randomly catch fire, but some Iphones and early touch phones 

I see where you are coming from and what you mean. But keep in mind that this is a wast enterprise that sucks money at all fronts as long as they can. When the enthusiasts have bought their cards, they will probably drop the price. 
And I don't really see why you are hated on SO much in this post. Its a honest opinion and a suggestion that actually is logical, but it would never actually work. 
 
And btw the "Stop being poor" joke is a classic and will always exist as long as internet trolls and redditors have access to the internet. 

I 2nd that from what ive heard the XFX customer support leaves much to be desired and the coolers are not the best, I own the 3rd card and while it stays fairly cool it is loud and being that they are voltage locked overclocking is limited

I guess your an AMD fan?
 
Have you seen some of the benchmarks? Its a Titan jr!!! 
It outperforms everything else on the marked (except the Titan). Of cource you have to pay a little more for a card that preform that well. 
And i doubt the 880 will cost so much more. We normally see a price drop on most graphics card. For example the 680 has had a 34% price drop since launch.
Its always like this with new products. They will set the price high and when the popularity of the card drops they will also lower the price. 
 
Price = Performance + Popularity
 
Take away on of the factors above or change them and you will see a change in price. 
I really don't like price rants, unless its justified. ( Like with the overpriced Macbooks)

Unless you plan to play Max Payne 3 and your resolution is 2560x1600 across 3 displays.

Go with the 780 :) It'll outperform the 7970 6GB even in higher resolutions and in Linus's benchmarks the 780 outperforms the 7970 clearly at 1080p where VRAM doesn't really matter. Even across a multimonitor setup the 780 will still beat the 7970 6GB since the 7970 doesn't have as much horsepower as the 780 despite having more VRAM