one or two graphics cards for CS 4?

Father Kodak

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Jan 17, 2009, 5:33:03 PM1/17/09

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Are there any situations in which Photoshop CS 4 will take advantage
of a second video card?

If more video memory is "better" with CS 4, is it better to have two
cards with say 512 MB each or one card with 1 GB?

I am not a gamer, so I don't need high frame rate video performance.

--AH

Dave

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Jan 17, 2009, 9:58:27 PM1/17/09

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maybe the answer to your question is to be found here:

http://kb.adobe.com/selfservice/viewContent.do?externalId=kb404898

Father Kodak

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Jan 18, 2009, 2:57:34 AM1/18/09

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Thank you. I guess I should have looked at the Adobe site before
posting this question. Here are the relevant parts of the Q&A:

Q. Does Photoshop take advantage of dual-GPU display cards? <- NOTE
A. Not at this time.

Q. Why can't Photoshop take advantage of more than one display card?
A. When you move an image window between two monitors that are each on
a separate display card, the GPU attached to the second monitor does
not have access to the data necessary to accelerate drawing. The SLI
and Crossfire technologies that use more than one GPU to speed up
full-screen games will not work with Photoshop, because their use is
limited by design to accelerate only full-screen games. <- NOTE

thank you.

Pere Kodak

Dave

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Jan 18, 2009, 6:32:47 AM1/18/09

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>>
>>
>>maybe the answer to your question is to be found here:
>>
>>http://kb.adobe.com/selfservice/viewContent.do?externalId=kb404898
>
>Thank you. I guess I should have looked at the Adobe site before
>posting this question. Here are the relevant parts of the Q&A:
>
>Q. Does Photoshop take advantage of dual-GPU display cards? <- NOTE
>A. Not at this time.
>
>Q. Why can't Photoshop take advantage of more than one display card?
>A. When you move an image window between two monitors that are each on
>a separate display card, the GPU attached to the second monitor does
>not have access to the data necessary to accelerate drawing. The SLI
>and Crossfire technologies that use more than one GPU to speed up
>full-screen games will not work with Photoshop, because their use is
>limited by design to accelerate only full-screen games. <- NOTE
>
>thank you.
>
>Pere Kodak

Glad I could help, Pere:-)

Dave
http://dave.photos.gb.net/p47889894.html

ah...@no-spam-panix.com

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Feb 9, 2009, 9:09:56 AM2/9/09

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>>>>> Father Kodak writes:

Father> Are there any situations in which Photoshop CS 4 will take advantage
Father> of a second video card?

Father> If more video memory is "better" with CS 4, is it better to have two
Father> cards with say 512 MB each or one card with 1 GB?

Father> I am not a gamer, so I don't need high frame rate video performance.

In Windows the color calibration tables are on the card, so with one graphics
card you cannot calibrate two monitors.

I do not believe this limitation is in Macs.

--
Andrew Hall
(Now reading Usenet in alt.graphics.photoshop...)

semoi

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Feb 9, 2009, 10:25:34 AM2/9/09

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It is utterly astounding how misunderstood is the interaction of Photoshop,
video card and screen size.
This issue goes back to the dawn of the VGA standard and has not changed,
even with the fledgling use of the GPU in CS4 under Vista.
It is also utterly astounding how Mac users are so utterly ignorant of the
very serious technical limitations of the crippled Intel hardware they use,
the primitive nature of Mac video drivers compared to Wintel counterparts
and the lack of sophisticated 64 bit development tools for the Mac OS
compared to even the Abomination that is Vista.

Father Kodak

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Feb 15, 2009, 1:22:20 AM2/15/09

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On Mon, 9 Feb 2009 07:25:34 -0800, "semoi" <fac...@hotmail.com>
wrote:

Uhh, can you be more specific? Can you explain some of your points
with examples?

thanks

father kodak

John J

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Feb 17, 2009, 9:22:22 PM2/17/09

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I rather doubt he will.