Mac Pro dual graphics card question

[Dprime]

Hey guys.

I have a 2 x 2GHz Dual Core Intel Mac Pro, with 9GB of DDR2 RAM and 2 Nvidia GeForce 7300 GT graphic cards each running a Samsung 24 inch screen.

I recently bought Call of Duty 4 and found that the game runs terribly on anything higher then around medium sort of settings.

I know the 7300 Graphic cards arn't the best for gaming, but they have done the job for me perfectly until now. I'm a photographer so I calibrate my screens with a Spyder and run a separate colour profile through each video card per screen, and its always calibrated perfectly.

I'm just curious if there is any actual performance advantage of having 2 video cards other then running a separate colour profile through each card? So for example, If I'm playing call of duty and only 1 screen is displaying information, does the other card just sit there, or does it jump on board and process information for the game being played? Because I would have thought having 2 7300's would somewhat give better performance during gaming then just the one?

Cheers,
Brett

 

[Tallest Skil]

Having two cards does nothing except drive three or more monitors.

 

[Dprime]

Thanks, I thought that might have been the case. Looks like its time to upgrade the video card.