8GB vs. 16GB RAM for Retina MacBook Pro [Solved] - RAM - Systems
So checking apples website, the rMBA 13 with the 3.0 GHz i5 CPU upgrade and 16 GB of RAM runs about $2200. I think you're money is better spent buying the rMBA 15 with the 2.5 GHz i7 (better for multi-tasking), comes with 16 GB of RAM starting (yay?) and ...