I just got the Benq w1070 1080p 3D pj and was trying to sect 1080i/60Hz on my Radeon 6670 vision control center but the 'Apply' button is gray out/not selectable. I can only apply 1080i/30Hz. What I don't understand is that with 1080i/30Hz setting, my pj reports a 1080i/60Hz when playing 3D SBS content. Can someone explain this? Is there a way to select 1080i/60Hz on the 6670? I have the latest driver per AMD auto driver detection. Thanks.