I'm getting a new workstation (non-gaming) and the most intensive is 3D inside Adobe AfterEffects, I'm getting a Nvidia card so I can enable CUDA.
According to this list (GPUs ranked by CUDA cores)
https://gist.github.com/cavinsmith/ed92fee35d44ef91e09eaa8775e3284e
A 690 has 18% more CUDA cores and you can get it for half the price of a 1080.. But the 1080 got twice the memory, twice the frequency.
How much does it matter? and how important is CUDA cores compare to the overall performance in a CUDA enabled software? Which card in the list should I get?