Unfortunately this video card isn't supported natively under OSX. Not sure if thats HD version like Mobility HD 3450, 3470 which aren't supported as well. New ATI framebuffer by dong (at insanelymac) will allow you to change resolutions, switch to your native resolutions but i am not sure if it will enable CI/QE, it doesn't for mobility 3450/3470. At least it gives resolution switcher which is great of course, and yes, you should give it a go.

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