Avivo vs. Fglrx Driver In GtkPerf @ Phoronix
 

*Source: Phoronix (http://www.phoronix.com/vr.php?view=10533)*
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While the Avivo driver doesn't yet contain 3D functionality or support a number of features found in the official fglrx driver and the community Radeon driver, it is making steady progress despite its age. Most recently with the open-source R500 driver implementing shadow frame-buffer support, we have experienced a noticeable increase in performance. As we have begun to receive messages from those interested in this driver wondering about the performance capabilities, we have carried out a brief GtkPerf test comparing the Avivo git code to ATI's official binary "fglrx" display driver.

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