Having a fourth-generation quad-core 4.0GHz Intel Core i7 processor and 8GB RAM, the performance and speed is the best you would have ever experienced. You can multi-task without any problem and get the job done easier and faster than before.
Also, it comes with a 1TB hard drive or if you want an even faster application/files response, you can choose the 1TB Fusion Drive which automatically puts the data that you use the most in the faster flash storage and the others to the hard drive. 1TB is a really good capacity for a graphic designer considering all the data you need to save every day. However, if you need more capacity you can upgrade to 3TB.