Apple is allegedly building a custom mobile GPU architecture
The wouldn't be the first time that Apple moves beyond the adoption of a standard architecture and comes up with its own design. Back on September 12, 2012, many were surprised to learn that the A6 SoC - found inside the iPhone 5 - integrates a custom-designed Apple "Swift" CPU architecture based on the ARMv7 architecture. Since then, all of Apple's mobile SoCs came with custom CPU architectures that have impressed in both real world performance as well as synthetic benchmark tests.
By implementing a custom GPU architecture, Apple would hit two birds with one stone. On one hand, the company should be able to create mobile GPUs that work perfectly in sync with the other elements one the SoC, improving the overall performance in the process. Furthermore, the implementation of a custom GPU would also translate into higher margins on iPhones and iPads, opening up the way to more record-breaking profits.