On an update note, it seems that the Fury X2 cards will be officially released by the end of the year according to Guru 3D:
http://www.guru3d.com/news-story/dual-gpu-amd-radeon-r9-fury-x2-in-circulation.html
So with all the anticipation for Greenland and Pascal and taking things to a whole new level, a specific set of circumstances that apply to my case and make the Fury X2 purchase more appealing overall are coming together and make the decision a lot easier to make, all things considered:
1: I'm a multi GPU fanatic and always have been, and a pair of X2 Furies for some Quad crossfire mayhem is simply a crazy amount of GPU firepower not likely to run out of poke anytime soon, while using less power than my current setup (300 watts X 4 cards to feed each )>
2: Developers are using more and more procedurally generated effects as time goes on given the huge amount of pixel shading power available, rather than relying on ever larger resolution textures that even when compressed, still take up a lot of video card memory to store on which was my main fear if the cards are still using 4GB onboard.
3: By being 4 GPU's on 2 cards rather than 4 separate cards, it frees up 2 PCI-e slots for which I can re install my awesome sound card ( Asus sonar Essence STX ), and as we all know onboard sound from a motherboard still sucks when compared to a dedicated sound card in terms of overall quality.....Get's the job done but that it really.
4: 4th slot takes the LSI raid controller I already own and can go nuts on SSD's and setting them up for some insane transfer speeds, as it has it's own CPU + controller onboard the card and handles 8 drives without using any expanders ( up to 128 with expanders....
).
5: Final reason is mainly that the Fury X2's, like their single GPU versions, will ship with their own water cooling setup, and I am very much a fanatic of silence and low temperatures and as we all saw, the cooler on the single GPU cards does a pretty good job on both fronts......Might allow to even not bother with a custom loop anymore, as do I really need to overclock with 4 GPU's onboard. do I?......
6: Greenland and Pascal will be faster still, but to beat 4 cards together will take at least 2 to match 4 furies or 3 to really beat them by any meaningful amount and even then the settings have to be beyond 4k resolutions, so that means using a display that goes beyond 4k and the only one available for now is Dell's 27" at 3000$, and i'd have to ditch the sound card or PCI-e raid card to fit that 3rd card anyhow.
7: Dual GPU cards using either Greenland or Pascal GPU's aren't coming out anytime soon, given that even the single GPU versions are still a fair amount away as it is, so potential dual GPU versions may only happen in 2017 and all we have to see is how long the 295x2 has been on the market, until it's replacement is officially released later this month for proof (R295x2 was released in April 2014, yup 18+ months ago ).
Don't hold your breath basically.....
So those Dual GPU furies and using a pair of them are sounding mighty tempting indeed, once one considers all of the above....It doesn't apply for single or even dual GPU users, but for full on Quad GPU insanity, and I really am that far off the deep end for sure.....