I have a Mac Pro early 2009.
The installed video card NVIDIA GeForce GT 120 512 Mo is not suitable for graphic acceleration on Lightroom 6.
Apple tells about a compatible card : ATI Radeon HD 4870 1Go on this machine. Is this feature ok for Lightroom accelation?
Beyond that, which video card do you recommend to get the Lightroom 6 graphic acceleration on this specific Mac ?