Apple's new 13-Inch Retina MacBook Pro has seen some impressive performance gains with its new Intel Iris integrated graphics, according to several benchmarking tests performed by Macworld. The site compared both the entry-level and high-end versions of the new 13-inch Retina MacBook Pro to an early 2013 Ivy Bridge model, which utilizes Intel's older HD 4000 graphics. In the Cinebench r15 OpenGL test and the Unigine Valley Benchmark, the new Retina MacBook Pros saw frame rate improvements of 45 to 50 percent, and in the Unigine Heaven Benchmark, gains were even more impressive, at 65 percent. The GPU gains are in line with performance estimates
