I think all of the GPUs available on Macs are going to work pretty well for OSX applications including Rhino. Where they will be bad is for people that want to run Windows on a Bootcamp partition. There are no good OpenGL Windows drivers for Intel and Radeon embedded chips.
Hi John, this is very important to me. I need both mac and windows, and I absolutely need rhino to run well on windows via bootcamp. I have no problems running rhino via bootcamp on my current bmp, from mid 2010. Can I go and buy a new MBP pro 15 inch without expecting too many problems on bootcamp?