"If we estimate bus performance on Nokia 770, it is ~55MB/s and is more than
enough to display 800x480 sized video frames with 30 fps."
"Looks like graphics bus on N800 is 3x slower than on Nokia 770. It might
be caused by inefficient framebuffer driver implementation in its initial
revision. But if it is a hardware issue, getting normal video playback at
native framerate may be troublesome."
That was a message posted to the maemo developers mailing list and the target audience were software developers (that's why it is full of framebuffer API details, screen update timings, etc.). I never expected this information to get outside the developers mailing list with some overly pessimistic interpretation causing some confusion. I posted some explanations here earlier: http://www.internettablettalk.com/fo...79&postcount=9
PS. Just in case, "graphics bus performance" is some technical characteristics and it is not the same thing as "video playback performance".
PS. Just in case, "graphics bus performance" is some technical characteristics and it is not the same thing as "video playback performance".