I am currently running a Quadro K5200 but I feel the new Titan will outperform.
I used a Nvidia GTX 980 and the Titan X (Pascal) blew that card away totally.
I edit video in Adobe Premiere Pro CC and all video filters i use are CUDA accelerated, iow the graphic cards is important for great performance. I did a small test and this is the results and made me happy that i bought the Titan X (Pascal):
One hour timeline rendered out to QuickTime, Cineform, 1920x1080:
Graphic card: GTX 980
A: 1 hour 4K on timeline scaled down to 1080, Lumetri Color added: 1852 Seconds
B: 1 hour 1080, Lumetri Color added: 1929 Seconds
Graphic card: Titan X Pascal
A: 1 hour 4K on timeline scaled down to 1080, Lumetri Color added: 1044 Seconds
B: 1 hour 1080, Lumetri Color added: 1080 Seconds