Benchmarks are showing better performance from the 2012 model in both singe and multi-core support. However, there is something discerning about buying a 2 year old computer when a supposedly "new and improved model is out." In both models the HDD is upgrade-able so that's fine, but ram is sodered on 2014. IMO I don't really need more than 8GB anyways. Both models are selling at the same $699 price right now (the 2012 was just lowered by $100). So the big question is should I buy the old machine and upgrade the ram to 8GB (and probably pay $775 total) with higher multi-core support, or is the new models Intel Iris graphics, and pre-paid 8Gb ram a better deal for a price of $700. I will mainly be doing office and business tasks (Word, iTunes, Multiple browsers open). It's a secondary computer to my 2013 rMBP. However, I do want to use Photoshop a couple times a month and do light video editing monthly. When I mean light... I mean like cutting and pasting, adding some transitions, music, and that's it. No special effects or crazy stuff.