People often obsess over the designs of Apple‘s products: Their smooth glass screens, the aluminum and stainless steel edges, and the colorful designs. But one of Apple’s most attention-grabbing design changes may be on the inside rather than the outside.

Apple is expected on Monday to announce plans to shift away from using Intel chips as the processing brains for its Mac computers. Instead, it would switch to its own chips, using the same foundation as in its A-Series processors, which have powered iPhones and iPads since 2010.