That isn't gonna help screen tearing. Screen tearing happens because the frames coming in are too fast for the the monitor to sync to. If the screen is at 60hz it can only display 60fps, but if the frames are coming in higher than that, you end up only getting part of the frame displayed before the next one comes in, resulting in mixed up frames on your screen. You must set you card to run at the same speed as your monitor to fix it, the cables won't make a difference.
When you are setting the vsync in ccc and radeonpro are you making sure only to set vsync in one program at a time? If you set it in ccc don't set it in your application or radeonpro, if you set in radeonpro don't set in ccc or your application, etc.
Also, what card are you using? and what specific games are you having problems with?