Having received the 8800GT today for my existing Mac Pro 2008, I have the following observations:
1. It works fine with the ATI 2600XT. I am running three monitors without any issues. Two off the 8800GT and one off the 2600XT.
2. The Arabesque screensaver does not work with both cards installed. I do not know if it will work with the 8800GT by itself (any reports?). It seems that screensaver has some major issues. No other screensavers have any issues (I tested them all).
3. Parallels seems to have some issues spanning all three screens.
1. It works fine with the ATI 2600XT. I am running three monitors without any issues. Two off the 8800GT and one off the 2600XT.
2. The Arabesque screensaver does not work with both cards installed. I do not know if it will work with the 8800GT by itself (any reports?). It seems that screensaver has some major issues. No other screensavers have any issues (I tested them all).
3. Parallels seems to have some issues spanning all three screens.