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Old 02-07-10, 12:35 PM   #2
JaXXoN
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Join Date: Jul 2005
Location: Munich
Posts: 910
Default Re: Quadview possibe? (Quadro NVS 420)

Hi!

The NVS420 integrates two GPUs behind a PCIe-Bridge and thus will
behave pretty much like two separate cards. Means: you can have
3D support up to the full resolution of 3840x2400 by enabling
Xinerama and there do exist a number of solutions to get the desired.
XineramaInfo. However, both, Xinerama and "Fakearama", come with
a number of problem. For details, please check the following threads:

http://www.nvnews.net/vbulletin/showthread.php?t=85604
http://www.nvnews.net/vbulletin/showthread.php?t=133740 (posting #2)

My recommendation is to purchase a single GPU card with two outputs,
then purchasing two Matrox TripleHead2Go boxes which are capable
of splitting a 3840x1200 signal from a single output into 2x 1920x1200. So
with twinview, you can hook up to four displays onto a single GPU in a
3840x2400 (2x 2x 1920x1200) or a 7680x1200 (4x 1920x1200) single
framebuffer configuration. The desired XineramaInfo behaviour
can easily be archived with nvidias "XineramaInfoOverride" option.

For details, please check
http://www.nvnews.net/vbulletin/showthread.php?t=126134
http://www.nvnews.net/vbulletin/showthread.php?t=106517

BTW.: in your case, a pair of Matrox DualHead2Go boxes
(which are cheaper than the TH2Gs) should basically also
do the trick for you, but I don't know if the modelines from the
posts, linked above, will work for them.

regards

Bernhard
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