At post 433 and 452 there are very good results of the GTX 770/780 too. For me the advantages of the GTX 780 are:
- 6GB memory good for GPU rendering and future 4K display usage
- can be overclocked at the nearly the same power like the 980
- low power consumption, strix model allow passive usage during idle usage
So finally I decided me for the GTX780. It’s a pity that I don’t reach the 50 fps for GPU4. So it stay to hope Rhino 6 will open the door for full GPU power.