Re: monitors & video cards (was: JPS?)

[P3D Andrew Woods <andrew@xxxxxxxxxxxxxxxxxxxxx>]

I wrote:
>The maximum refresh rate that a particular video card can generate
>for a specified resolution (640x480, 800x600, 1024x768) in either
>interlaced or non-interlaced format is determined by the maximum
>pixel rate of video card.

John Roberts wrote:
> And by the maximum horizontal sweep rate (if you want to fill the screen),
> and by the minimum horizontal and vertical retrace times / blanking intervals.

These are both set by the limitations of the monitor.

> Also in some cases by the amount and speed of video memory available, and
> the number of colors you want to show.

The amount of video memory available will determine the maximum resolution
for a particular colour depth - but it won't affect the maximum refresh
rate.  The speed of the video memory will be linked with the max pixel
rate of the video card.

> "Pixel rate" is sometimes called the "pixel clock" or "dot clock".

agreed.

Andrew Woods.


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