MD5 horsepower requirements
For those running FX 6200 and HDTV, Ryan just gave me a tweak that cut my cpu utilization by a third! I haven't finished evaluating it in terms of video quality but for those with excessive cpu utilization, I'll offer it here in hopes that more eyes are a good thing.
As root, edit /etc/X11/xorg.conf and in Section "Device" just before EndSection insert a new line:
Option "UseEvents" "True"
Then save and exit and restart X or reboot. This one change dropped my P4's utilization % from the 90s to the 60s while watching HDTV.