You've got to admire the ferocity with which iFixit tears into a new gadget. Sure, there might not be much new to look at inside the non-Retina-packing MacBook Pro or updated Air, but that didn't stop the site's dedicated hackers from ripping open the laptops and spreading their guts around a table. So, how does the standard Pro differ from its pixel-packed sibling? Well, in almost every way imaginable. In fact, there's not a lot separating the mid 2012 Pro from the 2011 model. Sure it's got some mildly updated internals, but it's still got the original MagSafe connector, a single Thunderbolt port and it is much easier to upgrade or repair than the spotlight-hogging version. The Air, on the other hand, does get a slight physical facelift, though it also remains largely the same as last year's model. The SSD has a tweaked connector and a new Sandforce controller, but otherwise, it seems like the biggest visible changes are some rotated labels and stickers. To see the full teardowns check out the source links.
Apple MacBook Air 13-inch (early 2015)
Apple MacBook Pro 15-inch with Retina Display (mid 2014)