Quote johnny h:Quote G-Doubleyou:
Nobody's mentioned that the 15 inch models are quad cores vs dual core 13 inch.
Power-wise always go for the quad, if it's in your budget.
Also the retina is lighter than the 13 inch standard ... with a much better screen and much better performance (quad core, i7, discrete graphics, ssd). Comes at a cost, but its an outstanding machine if you can afford it.
ive actually heard that a dual core is better if you can get a really decent one, something to do with the information signal being split in two directions (when being processed) rather than four, making it faster to allocate and re-evaluate information as it runs in and out of the cpu..
ergo, some dual core systems are better than some quad core systems and vice versa.