I suspect it will be one new chip for the top GPU and for the rest of the line up they will do an NVidia, rebadge, tweak and overclock older GPUs.
It seems the most likely option. Given that we're remaining on 28nm, I can only see another mid-range GPU being brought in if the architectural changes (i.e. performance "per-SP") bring really significant improvements. AMD already have a nice range of GPUs covering the low to mid-high performance spectrum, and it would seem strange not to make use of them for the next 9 months or so (until 20nm cards arrive). A new mid-range GPU is a lot of effort for a short product cycle, particularly when you already have a full range of GPUs available.
Regarding Semi-Accurate - I can't read any of Charlie's articles without cringing. He approaches everything from such a childishly-biased point of view that I can't take anything he says seriously. Besides, I don't see any "real" information in that article, aside from his (usual) speculation that Nvidia are heading for disaster due to strategic incompetence of some kind. This time he's claiming that it's the bifucation of their GPU manufacturing process that's to blame [presumably to feed the ever diverging needs of the gaming and GPGPU segments - something that, to my eyes, is simply good business sense given the growing GPGPU market and the ever diverging requirement that each market has]. He's been singing the same 'Nvidia is doomed' song for 10yrs now, and yet Nvidia are still here and still competing with AMD generation after generation.
Let's wait and see where things end up. After all the recent song and dance I'm still expecting the same thing with regards GPU spec as I have been for the past few months:
- 28nm process
- Around 2560 SP, coming in at around 420-450 mm^2
- 384-bit memory bus with ~7Ghz GDDR5
- Performance somewhere around the GTX780 to Titan window (stock for stock of course).
- Price around $550 to $650 dependent on performance relative to the GTX780.
As always, feel free to throw turds at me later if I'm way off the mark. But that's how I'm still calling it. I haven't seen anything yet to suggest a chip too far away from the above.