AMD Fusion On Gallium3D Leaves A Lot To Be Desired
Smokin Gun's was 2.4x faster on average with the official closed-source AMD Linux driver than what the open-source Radeon stack could pump out.
Watsow was 5x faster when the Catalyst blob was controlling the Radeon HD 6550D graphics core on the A8-3870K Fusion chip.
Doom 3 was more than 5.7x faster at all six tested resolutions with the Catalyst driver.
Lastly, the visually intense Xonotic game atop the DarkPlaces engine was 2.4x faster on average with Catalyst 12.3 handling the AMD A8-3870K APU.