Not for 10bit, quadro is really needed for that, and a titan would be good for editing since it's mass amount of cuda cores.
Thanks for the laugh, 4k$ gpu (quadro) or 1k gpu for youtube video (which are probably encoded with H.264). Oh and, most of Adobe software that work with Cuda (Premiere Pro at least if you tweak it since CS6) doesn't even use 2688 Cuda Cores (for the Titan).
Anyway, there is no point AT ALL to spend thousand on a graphic card when you can have more or less the same amount of cuda cores on lower graphics card i.e 780 with 2304 cuda cores.
Hell even a 680 is a bette