From what I can find  out it appears that my graphics card is OpenCL capable. There appears to be no definite information about this .All I need to do is download a driver .So I will install Reality 3 based on this .Not too sure if my Geforce GTX 560 graphics card is or is not capable .At the very least if the driver is not compatable then it probably won't work .So I guess I would then have to uninstall  the driver .Is there THAT much of a difference if I don't use OpenCL.