Now this is gonna be subjective thinking to some in here at best but.......................
Since Nvidia has just stepped out in front of AMD's upcoming release & released it's scaled down version of the 12Gb mem fully fleshed GM200 GPU TitanX listed at $1,000.00 w/ GTX 980 Ti w/ fully fleshed GM200 GPU, 6Gb mem & fewer cuda cores listed at approx. $650.00----ahead of AMD's scheduled launch of it's new "rumored" Fiji\Fury XT GPU-equipped vid cards w/ now-known HBM architecture that will be limited to 4 Gb capacity at launch, coupled w/ the now known move that Nvidia did more than 2 yrs ago to counter AMD's launch of their R9 290X Hawaii XT GPU w/ 512-bit GPU\mem bus w/
4Gb GDDR5 mem at 1250Hz freq vid card that was listed at $750.00-$800.00 to counter Nvidia's original GTX Titan--crippled GK110 GPU w/ crippled cuda cores (2816 instead of 2880) w/ 6Gb GDDR5 mem at 6000Hz freq on a 384-bit GPU\mem bus listed at $1,000.00--by shortly following up AMD's release w/ a FULLY fleshed GK110 GPU GTX 780Ti w/ FULL 2880 cuda cores,
3Gb GDDR5 mem on 384-bit GPU\mem bus w/ the mem freq SPED up to 7000Hz listed at approx. $650.00-$700.00.................
My gut read here tells me that the proverbial shoe that Nvidia landed on AMD's neck at that time has just been "landed" on Nvidia's neck by AMD as there was no reason for Nvidia to get out in front of AMD if they believed that they were not gonna be out done by AMD's release of this new "tech"....they simply just could have done what they did w/ the GTX 780Ti AFTER AMD released the R9 290X 2 yrs back & cut AMD's throat again........but Nvidia did not wait this round to do that & couple in the known fact that Nvidia WILL be using HBM2 architecture (along w/ AMD as well) w/ their next gen Pascal GPU's..................from this action I smell a rat & from all this is why I'm really gonna wait for AMD's release & will most likely purchase 1 if the initial reviews prove what I'm already thinking right now................regardless of whether the Nvidia GTX 980Ti is cheaper or not or if the AMD drivers are not quite polished at initial release for Fiji\Fury.................that this upcoming AMD hardware release is indeed a game changing product & is the real deal.
Marketing 101 being employed here folks by Nvidia attempting to hold on to % of market share in lieu of their competitor AMD releasing a potentially better performing & cost-efficient flagship product to market than what flagship product Nvidia currently had in the market...................
My 2 cents....................
We'll find out if I interpreted this correctly in a few days...........I just can't see AMD's marketing dept falling for this 2 times in succession...................

Also note that AMD is out front of Nvidia & have an advantage on Intel w/ their new combined "APU" sers CPU\GPU chips which are already out w/o either of the competition effectively countering them........yet........& AMD is about to come out w/ a new architecture (Zen) & when used in conjunction w\ HBM tech could even further enhance their current position in the market place.........I think that AMD has learned a thing or 2 along the way..............
PS......This is no different than what is currently occurring w/ SSD's right now transitioning from SATAIII-based to PCI-E-based & from AHCI protocol to NVMe protocol.....the new "tech" is clearly superior to the prior tech (& I have a PCI-E SSD that clearly proves this)....just cause it's in the infancy of development thus it is priced out of reach of most of the mainstream consumer markets at this time does not justify that it is a bad thing\deal for other fellow consumers to spend the necessary funds to acquire it as it develops because they CHOSE to do so.....simply a reality of being in a free market society.
Again my 2 cents................