Mac Pro 7300 + 6800GT Video card

[aiongiant]

Hi
i tried to do a search but didnt' have any luck

has anyone here tried to use the stock 7300 vid card that came with the mac pro and run it with a nvidia 6800gt?

i can't seem to be able to run both vid cards at the same time
i have the 7300 on the top slot and the 6800gt on the bottom
i have pcie power going to 6800gt and i know it works casue if i take out the 7300.. the video works

so wondering if theres a setting i'm missing? or maybe can't be done?
has to be 7300's only?

also reason for this is planniong to buy a 3rd monitor
and i have a dell collecting dust and it has the 6800gt inside thought i would use that to power the 3rd monitor

also anyone know if Windows supports dual video cards?

thanks!
Lester

[DoFoT9]

hhhmm its not really recommened but it should be ok. im not sure if osx will recognise the graphics cards....there was a thread somewhere but i cant remeber where..

[aiongiant]

i gave it a try but can't seem to run both vid cards at the same time... but i can run them seperatly just fine