I am not sure if you are serious in your thread but it sure sounds like some NV/Alienware 120Hz gaming promotion thread.
1) Blacklight Retribution and 7970ghz cards came out nearly 3 years ago. If that's true, you are telling us that you suffered through broken CF in this game for years until now, and this happens to be your favourite game? The problem with that is SLI and CF worked in the game from day 1.
2) You state that you cannot live without PhysX but Blacklight doesn't have PhysX in its options menu by all indications. Unless the developer added PhysX later? If you are making a statement in general that you prefer PhysX and 3D vision as NV features, that's perfectly understandable but one has to wonder why did you buy 7970Ghz CF over 670 or 680 SLI 2-3 years ago? I don't get it.
http://gamegpu.ru/mmorpg-/-онлайн-игры/blacklight-retribution-test-gpu.html
3) You say that you absolutely need to switch to NV immediately because you have to use 3D vision in your favourite game but Blacklight Retribution's 3D vision support by NV is
1/5. The game is not even officially supported for this.
http://www.nvidia.com/object/3d-vision-games.html
Blacklight: Retribution 3D vision support on NV's official page:
- Poor
- FPS
4) You say that you want a card that will perform at 120 fps minimums at all times at 1080P but even at 800x600, a 2600K can only manage 112 FPS average in Blacklight Retribution. You know it's impossible to get 120 fps minimums in many modern games simply because some games will always be CPU limited and well getting 120 fps minimums without turning settings down is a tall order even for a 980.
I am honestly not sure what the point of your thread is.
But I'll give you advice anyway. If you want a true upgrade from HD7970Ghz CF and you want PhysX and 3D Vision, wait for GM200 variants. I would recommend 970 SLI for you if you don't want to wait, but if you want a single card with those features and you are willing to spend up to 600 euro, I'd say definitely wait for GM200. Don't bother with 980 8GB variants as that is basically marketing for 1080P. You'll want GM200 6GB cards instead. As far as the expected launch date for GM200, it's impossible to say but I would presume around R9 300 launch, which would mean Computex - June 2015 and beyond.