Unsure about multiple video cards in my Quad

Hi everyone,
I looked around the forum but I am still a little confused I guess. My question is about having 2 video cards in my G5 Quad. I just got the X1900 though I haven't installed it yet. The card in my quad right now is the GeForce 6600.
Should I remove the 6600 completely and have just the X1900 or move the 6600 to another slot and have the X1900 in the primary position?
I have two LCDs (23 and 20 inch.) I mainly use FCP and Adobe CS3 Suite.
G5 2.5 Quad Mac OS X (10.4.9) 4.5 Gigs of RAM/ 23" Cinema Display

Hi-
If you put the x1900 in slot 1 and the 6600 in slot three, you will get the best performance out of the cards:
http://developer.apple.com/documentation/Hardware/Conceptual/HWtechPCI/Articles/pci_implementation.html#//apple_ref/doc/uid/TP40003937-DontLinkElem entID58
If you are only connecting the two displays, since the x1900 has two DVI ports, you can connect both to the x1900, and just remove the 6600.
I can't say which would perform better (two cards or one) but you might experiment with both and see which you like better.
By the way, remember to connect the power to the x1900.
G4AGP(450)Sawtooth, 2ghz PowerLogix, 2gbRAM, 300gbSATA+160gbATA, ATI Radeon 9800 Mac OS X (10.4.8) Pioneer DVR-109, ExtHD 160gb x2, 23"Cinema Display, Ratoc USB2.0, Nikon Coolscan

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Unsure about multiple video cards in my Quad

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