Sending the whole screen update at once is less than optimal, as it pushes bandwidth requirements through the roof. Better to stretch the transfer out over the

Sending the whole screen update at once is less than optimal, as it pushes bandwidth requirements through the roof. Better to stretch the transfer out over the entire frame to lower bandwidth requirements as much as possible. The timings aren't 100% vga anymore. DVI and HDMI support reduced blanking mode, which shortens vblank to lower the wasted time lower the dotclock requirements for a given resolution. Also, lcd panels are still scanned out pixel by pixel, line by line. There is no reason to put a much wider interface between the panel and the LCD controller.