I have a very weird problem with my 5870. Yesterday it worked fine, but it wouldn't downclock when idle even though it wasn't OC'ed.
I did a fresh install of OS and tried the 10.5 driver. I only installed the display driver, not CCC. I then got a VERY long ghosttrail if I dragged a window in circles around another open window. You know, like a really slow and old computer.
Then I installed the 10.7 display driver...same problem.
I did a new reformat and tried 10.8beta...same problem.
I have run 3D Mark Vantage with no problems but why this ghosttrail has suddenly come I have no idea. Is my card broken, you think?
I did a fresh install of OS and tried the 10.5 driver. I only installed the display driver, not CCC. I then got a VERY long ghosttrail if I dragged a window in circles around another open window. You know, like a really slow and old computer.
Then I installed the 10.7 display driver...same problem.
I did a new reformat and tried 10.8beta...same problem.
I have run 3D Mark Vantage with no problems but why this ghosttrail has suddenly come I have no idea. Is my card broken, you think?