Does anyone know whether is will be/is possible to create one combined
screen under Windows with all four DVI outputs of the GeForce Quadro
FX 4700 X2 in a 2x2 setup such that Windows sees only ONE single
virtual display and that OpenGL full-screens to the entire virtual
displays consisting of 2x2 screens? For an explanation: I am planning
to build OpenGL applications for this card that I intend to run in
real fullscreen across the four attached monitors. This only works if
I have one combined context. Is that possible with this card?
"Petra" <petra.neumann@gmail.com> wrote in message
news:c02df98e-0687-48f6-b763-163e38f1ee41@e53g2000hsa.googlegroups.com...
> Hi,
>
> Does anyone know whether is will be/is possible to create one combined
> screen under Windows with all four DVI outputs of the GeForce Quadro
> FX 4700 X2 in a 2x2 setup such that Windows sees only ONE single
> virtual display and that OpenGL full-screens to the entire virtual
> displays consisting of 2x2 screens? For an explanation: I am planning
> to build OpenGL applications for this card that I intend to run in
> real fullscreen across the four attached monitors. This only works if
> I have one combined context. Is that possible with this card?
>
> Thanks,
> Petra
Quaoting Nvidia..."The Quadro FX 4700 X2 features quad dual-link TMDS
transmitters, which enable it to support a maximum resolution of 3840x2560
pixels across four screens, summing up a total of 15360 x 2560 or 7680 x
5120 pixels. The four monitors can be positioned either next to each other
or on top of the other two."
Yes, I know it has 4 DVI-outs. That still doesn't mean you can run all
four screens such that Windows sees only ONE single virtual display.
You may have to combine just two together at a time and place them
side-by-side or on top of each other -
and in this case you cannot run real fullscreen because it will end up
showing only across two of the four displays.
> Quaoting Nvidia..."The Quadro FX 4700 X2 features quad dual-link TMDS
> transmitters, which enable it to support a maximum resolution of 3840x2560
> pixels across four screens, summing up a total of 15360 x 2560 or 7680 x
> 5120 pixels. The four monitors can be positioned either next to each other
> or on top of the other two."
'Petra' wrote:
> Yes, I know it has 4 DVI-outs. That still doesn't mean you can run all
> four screens such that Windows sees only ONE single virtual display.
> You may have to combine just two together at a time and place them
> side-by-side or on top of each other -
> and in this case you cannot run real fullscreen because it will end up
> showing only across two of the four displays.
_____
I thought the quote from nVidia was clear. What alternative meaning do you
see in "The FOUR monitors can be positioned either next to each other or top
of the other two." (emphasis added) All right, so better expression would
be ...The four monitors can be position next to each other or ^ two on ^ top
of the other two... but no matter, 15360 x 2560 is four screens in a row,
while 760 x 5120 is four screens in a 2 x 2 grid.
Considering the $7000 US price (5000 UK pounds ex VAT in the UK) for a pair
of Quadro FX 4700 X2 I should think precise, comprehensive, and accurate
information should be available from the vendor/manufacturer.
Phil Weldon
"Petra" <petra.neumann@gmail.com> wrote in message
news:46007312-8e52-4907-b8be-a3de1792a4e8@k37g2000hsf.googlegroups.com...
> Yes, I know it has 4 DVI-outs. That still doesn't mean you can run all
> four screens such that Windows sees only ONE single virtual display.
> You may have to combine just two together at a time and place them
> side-by-side or on top of each other -
> and in this case you cannot run real fullscreen because it will end up
> showing only across two of the four displays.
>
>> Quaoting Nvidia..."The Quadro FX 4700 X2 features quad dual-link TMDS
>> transmitters, which enable it to support a maximum resolution of
>> 3840x2560
>> pixels across four screens, summing up a total of 15360 x 2560 or 7680 x
>> 5120 pixels. The four monitors can be positioned either next to each
>> other
>> or on top of the other two."
>
>
>
I got a reply from NVidia directly and the card does NOT do what I
want because if you can't virtualize the GPUs you can't run real
fullscreen across all outputs (unless they're on one GPU).
<quote>
We don't virtualize the gpus for FX4700X2, but we have a new software
release for Quadro Plex that does exactly what you describe. It can
do 2x2 screens at identical resolutions and it "virtualizes" the gpu
such that Windows and Linux believe there is a single display device.
It is limited to 8kx8k and does not support stereo yet (stereo is
slated for the next version). It also supports positive and negative
overlap if you need this feature.
You can get acceleration across 4 screens on the fx4700x2, but I
believe it would require at least 2 separate contexts.
</quote>
> I thought the quote from nVidia was clear. *What alternative meaning do you
> see in "The FOUR monitors can be positioned either next to each other or top
> of the other two." *(emphasis added) *All right, so better expression would
> be ...The four monitors can be position next to each other or ^ two on ^ top
> of the other two... *but no matter, 15360 x 2560 is four screens in a row,
> while 760 x 5120 is four screens in a 2 x 2 grid.
>
> Windows Vista and Windows XP can extend the desktop across all (including
> more than two) connected monitors.
> (seehttp://support.microsoft.com/kb/307873/en-usfor XP).
>
> Considering the $7000 US price (5000 UK pounds ex VAT in the UK) for a pair
> of Quadro FX 4700 X2 I should think precise, comprehensive, and accurate
> information should *be available from the vendor/manufacturer.
>
> Phil Weldon
>
> "Petra" <petra.neum...@gmail.com> wrote in message
>
> news:46007312-8e52-4907-b8be-a3de1792a4e8@k37g2000hsf.googlegroups.com...
>
> > Yes, I know it has 4 DVI-outs. That still doesn't mean you can run all
> > four screens such that Windows sees only ONE single virtual display.
> > You may have to combine just two together at a time and place them
> > side-by-side or on top of each other -
> > and in this case you cannot run real fullscreen because it will end up
> > showing only across two of the four displays.
>
> >> Quaoting Nvidia..."The Quadro FX 4700 X2 features quad dual-link TMDS
> >> transmitters, which enable it to support a maximum resolution of
> >> 3840x2560
> >> pixels across four screens, summing up a total of 15360 x 2560 or 7680 x
> >> 5120 pixels. The four monitors can be positioned either next to each
> >> other
> >> or on top of the other two."
GeForce Quadro FX 4700 X2 
Linear Mode
