The iPad Air 2 managed to shave off 18% off the thickness from the first generation Air; it’s now an almost impossible 6.1mm thick, and 1.4mm slimmer than the original iPad Air. Apple’s iPad Air 2 contains a new chip called the A8X, an SoC that’s faster than the A7 in the original iPad Air or the iPad Mini 2 and 3 and the A8 in the iPhone 6 and 6 Plus. The Air 2 is worth it to upgrade to, if you have a three or four year old Apple Tablet, you will notice a dramatic improvement when it comes to reading, but you are better off buying the iPad Air 1 if you can get a good deal on eBay or your local tech store.