As you guys can see my EVGA GTX 590 running on my mac pro 2009 this is happening with the new driver from nvidia. I plugged 2 cables mini 6pin to pci-e 6pin in logic board to the GTX for powering. The first problem I found here is the second cuda core, is only 512mb and show as a generic NVIDIA. Any suggestion to fix this ? Testing here and I’ll give news. I’ll test the DaVinci and the premiere CS5.5. It seems that 3d software, use only one core. For those 3d softwares I think a quadro will be better choice. Nvidia guys, THANK YOU, awesome.
https://postimage.org/image/b49h9ppb5/
https://www.nvidia.com/object/macosx-270.00.00f01-driver.html