It implies nothing other than the fcat it comes with a driver. Do a search for ATI OpenCL certified driver, nada. Not so for Nvidia. Again, CERTIFIED. ATI can't certify the driver, the group behind OCL does and they haven't done it yet. ATI submitted a driver back in November and it stil hasn't come back yet as CERTIFIED. They seem to move slower than a snail going up hill in the winter in a stream of molasses.