Works fine under OS X with NATIT, Titan or NVidiaEFI; fell QE/QE2D(once enabled)/CI and resolution switching.

I should add that unless I delete all other device IDs from NVDANV40Hal and NVDAResman (leaving only 0x009110de, this GPU's ID) first, however, I get a kernel panic on boot. That's probably to do with those drivers picking up other devices on my nVidia chipset-motherboard and trying to initialise them as graphics cards though.

Note that I run an SLI setup, and I have to flip my SLI bridge to single card or remove the second card to get OS X work with graphics drivers - while NATIT, Titan and NVidiaEFI all recognise both cards fine and NVDANV40Hal loads fully on both, I just get a black screen after loginwindow loads with both cards in. I've tried all the outputs on all the cards at this point, so it doesn't seem that it's just trying to initialise the primary monitor on the secondary card. Bit of a PITA!

impressive, i am trying to get multiple videocard support too. so probably its possible..