>>>>You've got four eyes??? Where??? :)))
>>>
>>>I need to have a monitor showing four channels at the same time. Of course, only one would have sound but I need to see visually four channels. I have presently ATI TV Tuner 7.1.
>>
>>Michel, have you looked into the USB tuners? Might be easier than 2/4 video cards...
>
>I've read the reports that USB version of ATI TV-Tuner is not fast enough to display decent picture, at least if using USB 1.0

Well, the math is pretty simple. 640 X 480 resolution @30f/s = 9,216,000 b/s. Full speed USB 1.1 would handle a single tuner :-) However. 2.0 @ 480 Mb/s should handle 4 with ease. The question now becomes are there USB 2.0 High Speed tuners available ?