Apple likes to control as much of the technology that powers its products as possible, because the more control it has, the more efficient and optimized its products can become. That’s why the A-series chipset that powers most of Apple’s mobile devices is developed almost entirely in-house, but there are still a few areas where Apple relies on third-party technology. One of these areas is the chipset’s built-in GPU, but according to a report from Fudzilla, Apple has secretly been working on its own GPU for a few years now. The report doesn’t mention when the GPU will make its way into Apple’s products, and it’s important to note that this is only a rumor.