For my new home i rendered my kitchen;

I'm looking for a new laptop, and i'm really interested in the new macbook pro 17. But how is the speed on the sketchup pro mac version? Are there any disadvantages in the mac version?
Im currently running a windows version with vray on a I720 12gb desktop in bigger files the speeds drops.

Are there any disadvantages in the Mac version Sketchup and Vray? Is the speed the same as in the windows version? i'm looking for a new laptop and im really interrested in the new macbook pro 17. If the windows version is better i've gotta look for something else...