cisco0623
I don't get the price tag.

No competition; the situation is no different than the first Titan: AMD is absent again, except this time crytocurrency took all the supply and AMD's focus while nVidia sneaked this Titan Z in at an exorbitant price until AMD responds.  Thereafter, nVidia could drop the price but we don't know how a dual-Hawaii will perform or whether the drivers work properly.  But until then, Titan Z is nVidia's way or the highway. 
 
 
I think Intel should take a page from nVidia playbook on this is actually unlock their 2.7GHz 12-core Ivy-EX Xeons...a $3,000 "Core i7-4999" versus the regular up at the $4,000 level, but with the same Turbo limit of 3.5GHz just to keep it interesting.  What's AMD going to do about it, unlocked their 16-core Piledrivers with a whole-new platform? 
 

cisco0623You can buy two titan BLACK SC for $2000 which wins over this.

We can buy two GTX760's for the same performance as one GTX780 Ti, which is three times the price of one GTX760; but plenty here still justify the higher-end GK110 cards and look past the cost-effectiveness of GTX760 SLI scaling on various excuses of just wanting more to the 3-way limit on GTX760.  The level of irony is nauseating, those complaining about Titan Z's price actually have something in common with those that refuse to pay for GK110 cards, but few acknowledge it.
 

cisco0623I am guessing its clocked slower than a stock Titan as well due to heat etc so...?

8 TeraFLOPs for Z and 5 TeraFLOPS for Black, that would imply GPU clockspeeds in the 700MHz range, similar to Tesla cards.
 

cisco0623
If you wanted Titan sli in one slot, sure, but sell it for $2g

Dual-GPU cards have always carried a premium for using less power and space than an equivalent pair for the performance they provide, there is no sense in making it cheaper which can cannibalize other products.  GTX690 performed like a pair of GTX670, yet still used less power due to shared circuitry, and priced more than twice ($399 versus $999).  Scale it up with Black as the datum and Z can only go down to $2499.

20mmrain
Dual Cards should cost more... up to a certain point. However, there does come a time when it is just price gouging over bragging rights and performance gains. With the GTX Titan-Z I think we just hit that level. 
Honestly.... I was waiting for this card to drop (GTX790/Titan-Z) and the day of release I had money allocated for such a card. (I even have the 3 grand for the Titan-Z if I wanted to buy it) But with Nvidia's ridiculous price tag as long as the R9 295x2 sticks to the $1500 dollar price tag (rumored) I will be spending my money there instead of with the green team. Sorry Nvidia, I will return to you as a customer when you get your head out of your butt!!

100% agreed. I could see the Titan Z costing an additional 10-15% not an additional 33% for the dual GPU power and space-saving premium. I'm hoping Nvidia didn't have a secret board meeting where they decided on a 5 year plan to gouge the customer until they win Worst Company of the Year (though I still think that Award is a bit silly, Monsanto should win that award every year for the next 300 years, if there was a charge for "crimes against humanity" they'd have several thousand counts of it when going to court, google if you want to know more about this vile, sadistic company).