What configuration of macbook pro for photographic processing is better?

You don't need too high configuration, unless you spend a lot of time processing high-pixel photos in RAW format (a single picture is more than 30MB), but PS will consume a lot of memory, so we recommend 13 inch Pro, followed by a low-profile 2.6Ghz processor. The performance of integrated graphics cards with maximum memory 16GB and HD5 100 is comparable to that of discrete graphics cards of GT720M.