I currently have an Asus nVidia 1GB EN210 Silent.
I am running Mountain Lion 10.8.5 on Dell Precision T7400.
I got the card working via the EFI inject method, and during boot in verbose mode I see 'NVDANV50Hal.kext loaded and registered.
I used to run Lion with a Quadro FX1700 on the same machine and the image was crisp, but no real acceleration
Before I did the EFI inject there was no GPU acceleration, but the icons (e.g. dock icons, wifi and volume icons) and fonts everywhere (software, top bar) and the colours were crisp and correct. However, after the EFI inject, everything I just said is in a über poor quality. By that I mean I can hardly recognise dark icons in the dock, and everything is VERY aliased. I have toggled with screen resolution settings, performed "defaults -currentHost write -globalDomain AppleFontSmoothing -int X", toggled with the font-smoothing option in system preference and ran the colour calibration in system preference, all to no avail. Can anyone help me out here?