Why can't I use my CUDA in the "renderer" menu in while creating a project in Adobe premiere pro cs6?

[UnlimitedVelocity]

i have a GTX 770 4GB graphics card, it's a new card so nothing should be wrong with it, and i have the latest driver downloaded through nVidia experience, so i must be able to choose the " Mercury Playback Engine GPU Acceleration (CUDA)" option, but the menu is greyed out, i can't even click it, what's the problem, is my graphics card bugged or what? please help thanks.

 

[Brunostako]

Premiere Pro CS6 does not support the GTX 770 natively.

http/helpx.adobe.com/premiere-pro/system-requirements.html#Adobe%20Premiere%20Pro%20CS6%20system%20requirements

 

[kenrivers]

There is something you can do to get the card to work with Premiere Pro CS6 - http/www.studio1productions.com/Articles/PremiereCS5-2.htm
Scroll down to "Now how to Unlock your NVIDIA Card for Premiere CC 2014, CC, CS6, CS5.5 and CS5
For Windows Users"

The reason that card isn't officially supported is because the card was released after Premiere Pro CS6.