Hi Phillip,
Thanks for your response, it has been a huge help.
I first started looking at GTX 470, but couldn’t find one that was compatible with the Mac Pro 3.1 (Needs to been a non reference card). Well the ones I could find were about $500-$600 and not worth it for such an old machine.
I ordered some miniPCI 6pin to PCI 6pin power cables (2x) for the graphics card, and they will take a while to get here so I’ve got some time to do some more research.
I’m eying off a MSI N660-2GD5OC Geforce GTX 660, simply because I can get it locally and under $300. Will keep you updated.
Cheers
Kallan