Originally Posted by
Preston
Stone,
CS6 supports Open GL and Open CL if you have a compatible video card, but CS6 is limited in it's implementation of Open CL compared to CC or CC2014.
In CS6, go to Edit>Preferences>Performance. Look in the lower right corner and you'll see a section "Graphics Processor Settings". If your video card is compatible, the check box "Use Graphics Processor" will be checked. Below that is a button, "Advanced Settings" where you can choose how CS6 uses the graphics processor.
If "Use Graphics Processor" is greyed out, then you are either using on-board graphics (on the CPU) or your video card is not compatible with Photo Shop.
The Adobe "Help" article that Paul linked to in his original post is worth the read.
--P
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