All AMD GPU's from like the dawn of man support 10 bit color, your display has to support 10bit color to experience it. It's one of the reasons AMD is bringing us FreeSync 2, so 10 bit color is more obtainable to the masses instead of being for the few who spend 1000's on monitors.
Thanks for the reply, but please read the post carefully!
All AMD GPU's support 10 bit, but ONLY in DirectX mode, whereas Photoshop requires 10 bit in OpenGL.
Which is only available in FirePro cards.
And ofcourse I know my screen needs to be 10 bit as well, which is the case.
For both of them.