Quote Originally Posted by Peter View Post
Is this only on the 1st gen macpro's or on both?

Did you run tiger or leopard?

Tested using X1900XT on a June 2008 MacPro, running Leopard - and also Tiger...

Initial tests revealed that currently available X1900XT cards DO work in 2008 MacPro. Model tested was purchased June 2008. Old X1900XT cards also work once the firmware is updated.

The X1900XT cards supplied as specified with a new MacPro also work (!...)

Tests were carried out under Leopard 10.5.4 with all online updates.

Also tested installing Tiger (10.4.11) on a 2008 MacPro - and initial indications show that it works ok.
Haven't tested an NVIDIA GeForce 8800 GT on a 2007 MacPro yet... X1900XT is good enough.

Simon