ATI has released a new set of Catalyst drivers (v3.7), here are some of the changes from the release notes:

The Catalyst driver now provides a Triple Buffering Option. Enabling Triple Buffering has the potential to increase performance under certain conditions. Please refer to the help file of the feature for additional information. This new feature is located in the OpenGL Compatibility Settings tab. As with most CATALYST™ releases, the performance has increased in numerous situations.