How can I tell which vid cards support dual DVI displays?

Some vid cards support two DVI monitors via the use of a splitter
cable, even though they only have one DVI out. Do they all support
that? I never see it say so in the specs...

thanks

On or about Fri, 9 May 2008 21:14:10 -0700 (PDT) did dterrors@hotmail.com
dribble thusly:

>
>Some vid cards support two DVI monitors via the use of a splitter
>cable, even though they only have one DVI out. Do they all support
>that? I never see it say so in the specs...

I don't know how the graphics card will handle two different monitor ID
signals, but assuming you can get it to output a correct signal, there's no
reason why you can't split that signal and send it to two devices.

For analog, you're going to lose quality - how much depends on the quality and
length of the cables. For digital, either the signal is intact or it isn't -
rather than losing quality, you might lose connectivity, maybe intermittently.

I expect there are devices out there that intelligently split the signal,
amplifying as necessary. But I also expect such devices to be at least as
expensive as a new graphics card with two DVI connectors.
--
- Mike

Ignore the Python in me to send e-mail.

In article <4007bb5a-9f1c-4b17-a3f2-60abf3b6f3c5
@y21g2000hsf.googlegroups.com>, dterrors@hotmail.com says...
>
> Some vid cards support two DVI monitors via the use of a splitter
> cable, even though they only have one DVI out. Do they all support
> that? I never see it say so in the specs...
>
> thanks
>

Look at a picture of the card. If it has two dvi connectors
then it will feed two monitors, it's as easy as that.

-P.

--
=========================================
firstname dot lastname at gmail fullstop com

<dterrors@hotmail.com> wrote in message
news:4007bb5a-9f1c-4b17-a3f2-60abf3b6f3c5@y21g2000hsf.googlegroups.com...
>
> Some vid cards support two DVI monitors via the use of a splitter
> cable, even though they only have one DVI out. Do they all support
> that? I never see it say so in the specs...
>
> thanks

The DVI connector supports both single- and dual-link
forms of the digital interface it uses (called "TMDS").
It's possible that some cards could provide two separate
single-link outputs via the connector, but this is a non-
standard use. (Not that the DVI standard is all that solid
in the first place...) You can also, of course, simply
split a given output, preferably with an active splitter
(i.e., one which takes the digital signal and duplicates
it via a buffer).

Bob M.