I have an ATI HD 4600 series video card that I use as a primary GPU on my computer. Unfortunately I can't seem to enable the OpenCL tickbox on the performance tab even though my card is compatible with OpenCL. I already installed AMD Catalyst with AMD APP SDK Runtime in my computer and Photoshop CC still won't let me tick the OpenCL box. Is there a fix for this or am I missing something else. I'm running Windows 8 OS and an Intel i5.
If you have OpenGL you should be fine. OpenCL does not gain you much more, and not all cards will display it.
How do I know if my OpenGL is enabled?
Click on Help/sys info. It will show you what the program sees.
OpenGL settings are in preferences/performance