Nvidia 8800 works in 2009 MacPros but is no longer available...

ATI 4870 will give you 2 DVI outputs with addition of the relevant (stupid!) mini-display port adaptor. There is a Single Link and Dual Link adaptor available on the apple site. Not tried Dual-Link adaptor - but Single link works up to 1920x1200 @60Hz

GTX 285 seems to be dificult to source - apple still quoting 2-3 weeks in the UK at cost of just over £300 - however, it does give you 2 x DVI-D ports, albeit apparently not as good performance as ATI 4870 (but better than GT120)

In summary - if you need one 'now' - ATI 4870 seems the best option.

I've always recommended 8 core macPros to clients who use their macs for applications other than Catalyst. Current price difference is not too much between 2.26G 8 core and 2.66G 4 core



Simon