one or two graphics cards for CS 4?

On Sat, 17 Jan 2009 14:33:03 -0800, Father Kodak
wrote:

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

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

http://kb.adobe.com/selfservice/viewContent.do?externalId=kb 404898

On Sun, 18 Jan 2009 04:58:27 +0200, Dave wrote:

On Sat, 17 Jan 2009 14:33:03 -0800, Father Kodak
wrote:

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

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

http://kb.adobe.com/selfservice/viewContent.do?externalId=kb 404898

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

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

http://kb.adobe.com/selfservice/viewContent.do?externalId=kb 404898

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

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…)

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.

On Mon, 9 Feb 2009 07:25:34 -0800, "semoi"
wrote:

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.

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

thanks

father kodak

Father Kodak wrote:

On Mon, 9 Feb 2009 07:25:34 -0800, "semoi"
wrote:

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.

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

I rather doubt he will.