I have to choose between two Macbook Airs for college. Both are 13" and 250 GB. One is from 2012 with - 2.0 ghz i7 - 8 GB of ram The other is from 2015 with - 1.6 ghz i5 - 4 GB Does the extra four GB justify staying with the 2012 model? The battery is much better for the 2015 model. I would mostly use it for movies, web, and playing RTS games from the mid 2000s like Age of Mythology and Battle for Middle Earth 2. Sometimes for research I have a lot of tabs open and I have made my 8 GB model crash. This happens infrequently. Does the newer model's faster SSD negate the need for as much ram? Do the HD6000 graphics vs HD 4000 graphics make any difference?