Technical specifications for the MacBook Pro "Core i5" 2.3 13" Early 2011. Dates sold, processor type, memory info, hard drive details, price and more. The most notable differences between the "Mid-2015" models and their predecessors are that the "Mid-2015" MacBook Pro models have a more advanced trackpad, faster flash storage, and a higher capacity battery. The higher-end "Mid-2015" models have modestly faster graphics than the predecessors, as well. However, because the models are so similar BhQsqNg.