Leon Kowalski
macrumors 6502a
Isn't 1080p 25fps?
That depends on where the video processing is being done, and where in the
video signal path you make the measurement. The original source material
may have a lower frame rate (1080p24, 1080p25, or 1080p30), but the video
signal to the iMac's LCD panel or an ordinary LCD monitor must be refreshed at 60Hz.
http://en.wikipedia.org/wiki/1080p
LK