You're upset at Nvidia because Ubisoft made a game that needs more VRAM than the graphics card you bought has? Wat.
I'm upset that a game seems clearly able to actually utilize more than the 780 has (not just plain caching) while the 780 is still very much performing well enough to justify having that extra VRAM while Nvidia, for the longest time, forbade 6 GB models from AIBs all to protect their precious and pointless Titan line as well as to force people's hand at premature upgrades, yes.
780s/Tis are premium cards, Nvidia's best short of ridiculously-priced Titans. They cost a fortune, they should not be so clearly mismatchemed and restricted from being otherwise and only now, too late for still-recent buyers like myself, are they allowing just 6 GB regular 780s (not even the Ti). The best part is issues are coming mostly with Nvidia-sponsored games like Watch Dogs and Daylight. People like me don't buy these $500+ monsters to join the "it's just unoptimized" train when games demand more than we've got, we buy them either by themselves or in SLI to play games at their best. Clearly that's not happening now.
A developer's ability to easily use more VRAM tha the card has is not the problem, the problem is the card was intentionally crippled so that it never had the VRAM amount its position and pricetag demanded at least as an option for in the first place. It's disgusting, and I hope to swear off Nvidia entirely with my next 4K-targeted upgrade (when I won't need their exclusive support of driver downsampling anymore).
Nvidia have really gone off the deep end this hardware generation, in my opinion. First the GK104 misleadingly released as their flagship, then the Titan crap getting first crack at the real flagship, then the iterative Titan Black and 780 Ti, and then the Titan Z with shady market segmentation all around. I've never felt more shocked at Nvidia than I am at the moment, a $3000 dual-GPU card when their competitor is selling something of the same caliber for half the price?
My two month old 780 is already exhibiting troubling limitations it should not (when the GPU itself is so powerful). AMD are offering much better hardware sense and value at every pricepoint, Nvidia are selling people $700 cards with no more VRAM than AMD's 2.5 year old and now half-price old flagship in the middle of a console gen shift. Upset is probably not a strong enough word, outraged is better. They are in the best position to have known this would happen and they probably wanted it to.
No but I'm pissed I pulled the trigger on a second 780 and my step up ran out just before EVGA offered the 6gb ti's. Been trying to offload one to a few mates who were interested in a cheapish 780 a few months back but now their looking at the offer like I'm trying to sell them a leper in light of Wolf14 and now Watch_Dogs.
That's harsh, sorry to hear that.