Graphics card supporting DYNAMIC PARALLELISM IN CUDA

Can anybody suggest me a NVIDIA Graphics Card supporting DYNAMIC PARALLELISM IN CUDA, which is cheaper than NVIDIA Kepler series ?

The GeForce GTX Titan would be the best one, but the GeForce GTX 780 would support this feature.
If you have a cool application which leverages Dynamic Parallelism, please do share your experience on the forums.

BTW I may move this thread to a more appropriate location in a couple of days.