is that mean the GTX 900 series not working with adobe?!
Read the link I gave. It clearly states:
Beware: The video card only helps in limited situations. It is not the holy grail and generally does not reduce export times.
Encoding to an export format is done by the CPU, not the GPU. There is no performance gain from a video card.
The 900 series work quite good. What does not work with Adobe is unfounded and wrong user expectations.
If you really want to see your GTX 980 Ti working download our Premiere Pro BenchMark (PPBM) and run it. It has some very heavy GPU used MPE accelerated effects. The MPEG2-DVD timeline is run two times, with GPU acceleration and with CPU only, typically you will see better than an order of magnitude improvement.. If you are using Premiere CC you can also see major performance improvement on the H.264 timeline if you run it according to the directions and later run it again with the CPU and manually time it you can also see major performance improvements.
As you can see it all depends on how much you use MPE accelerated features and effects.