The guys at Phoronix have taken another stab at the open source ATi graphics drivers from X.Org. They're comparing the latest version, 7.2, to the latest fglrx display drivers (8.33.6).

"In this last comparison, the fglrx binary blob had greatly outperformed the open-source driver. While the fglrx driver remains faster, has the performance delta between these two drivers decreased?"