I have found that the 720p apple movie trailers run smoother and with less cpu usage than with older drivers. It never went above 80% for me and had no dropped frames. Now for 1080p...... Before with 1080p it was very jumpy and
not really watchable with the 81 series drivers. I'm using the latest Pure video install as well (AFAIK): 1.02.196. Thanks for the great drivers Tony

2 point jump at 3d mark 05 from Tony's previous drivers.
Never went above 93% for me with the X Men 1080p trailer, playback seemed slightly slower, but still quite watchable (though I could only see a portion of the screen on my WXGA+ screen, when I resized it down it did not mess up with losing colors like it did in the past for me). Therefore for me and my system at least HD playback does seem better with these new drivers.