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View Full Version : SCRATCH GeForce GTX 295 HDMI out to HP DreamColor.


Michael Thornton
03-20-2009, 03:13 AM
SCRATCH GeForce GTX 295 HDMI out to HP DreamColor.

I wonder if the HDMI is 10bits out.

Have any one used this card in a Scratch Station?

I wonder if you you can output using the HDMI port for monitoring.

Please help if you know.

Thanks

Tek
Barend Onneweer
03-20-2009, 04:39 AM
It will probably work - in the sense that you will get some kind of picture, but it's not supported by Assimilate.

But relative to the cost of a Scratch license a Quadro 4800 (starting around 1500 USD) should be acceptable? Then you could use 10-bit Displayport out to the Dreamcolor.

Bar3nd
Antoine Baumann
03-20-2009, 04:54 AM
i think hdmi is not really good with the dreamcolor as it doesn't allow you to use the powerfull color engine of the monitor, thus I think hdmi is oftently 4:2:2

Any link of a brand new quadro 4800 @1500$ ?

Thanks,
antoine.
Barend Onneweer
03-20-2009, 05:23 AM
Any link of a brand new quadro 4800 @1500$ ?


I just googled for it and a whole bunch came up between 1500 and 1600.
http://tinyurl.com/clq7db

Bar3nd
Jean Déraps
03-20-2009, 05:47 AM
Actually HDMI isn't a problem for the Dreamcolor as it should access the colour rendering engine at up to 10 bit colour (depending on your graphics interface/card). The actual question is the signal output, of whether your application outputs in YCC or RGB, since the Dreamcolor only accepts RGB signals. See:

http://h20219.www2.hp.com/Hpsub/downloads/DreamColor_and_LP2480zx_FAQ_June08a.pdf
Adam Glick
03-20-2009, 07:15 AM
Until alternative technologies become a little more mature and robust, I believe Assimilate have clearly stated their preference for the use of SDI for critical viewing.
Lucas Wilson
03-20-2009, 07:55 AM
Actually HDMI isn't a problem for the Dreamcolor as it should access the colour rendering engine at up to 10 bit colour (depending on your graphics interface/card). The actual question is the signal output, of whether your application outputs in YCC or RGB, since the Dreamcolor only accepts RGB signals. See:

http://h20219.www2.hp.com/Hpsub/downloads/DreamColor_and_LP2480zx_FAQ_June08a.pdf

We support 10-bit out the DisplayPort connector to the Dreamcolor with the correct NVidia card.

Lucas
Simon Blackledge
03-20-2009, 09:41 AM
We support 10-bit out the DisplayPort connector to the Dreamcolor with the correct NVidia card.

Lucas

Which is?
Blair S. Paulsen
03-20-2009, 10:13 AM
Which is?

Good question. The Quadro CX, accelerated for CS4 :rolleyes:, is the only nVidia card with a display port spigot that I know of.

Is the CX Scratch friendly?

Is the 5800 shipping yet?
Simon Blackledge
03-20-2009, 11:10 AM
So when Apple support the 5800 with display port out...:)

sorry, couldn't resist..

s
Barend Onneweer
03-20-2009, 11:33 AM
The 4800 and 5800 both have DP out. Lucas has stated that the Quadro CX is also supported in Scratch.
Antoine Baumann
03-20-2009, 01:02 PM
Thanks for the link on 4800 and the pdf about dreamcolor, which leads me to this question: in the pdf it is written "What is the benefit of using a 30-bit graphics card with the HP DreamColor LP2480zx
display?
With a 30-bit/pixel-aware OS, graphics card, and application, the user is able to display
images that choose from the full palette of 1.07 billion colors."

So what 30bit/pixel-aware os and applications does really mean? If assimilate support it for scratch under windows xp, I guess it is a 30bit-aware os? What about redcine?

Thanks,
antoine.
Lucas Wilson
03-20-2009, 01:32 PM
So what 30bit/pixel-aware os and applications does really mean? If assimilate support it for scratch under windows xp, I guess it is a 30bit-aware os? What about redcine?

Antoine,

SCRATCH internally supports 32-bit float color space. The DisplayPort is a 10bpc connection. The Dreamcolor supports 10bpc. SCRATCH supports feeding a 10bpc stream out that port.

I do not believe REDCINE supports this.

Lucas
-----
ASSIMILATE, inc.
LA, CA, USA
Shane Betts
03-20-2009, 03:53 PM
So when Apple support the 5800 with display port out...:)

sorry, couldn't resist..

s

LOL. Someone is gonna get such a pinch:biggrin:
Michael Thornton
03-21-2009, 08:12 PM
Clear define info would be nice.


Good question. The Quadro CX, accelerated for CS4 , is the only nVidia card with a display port spigot that I know of.

Is the CX Scratch friendly?


SCRATCH internally supports 32-bit float color space. The DisplayPort is a 10bpc connection. The Dreamcolor supports 10bpc. SCRATCH supports feeding a 10bpc stream out that port.

Hi Luki,

So is it safe to assume that the CX will be on the active support list soon?

Tek