Mac Pro 5, 1 12-Core 2.66GHz, RAM 32 GB, 1TBHD, GeForce GT120, Wi-Fi HIGH Sierra.Examples of Xeon 12-Core Mac processors include: It is responsible for executing a sequence of stored instructions called program, in personal computers such as an iMac.Ī multi-core is a single computing component with two or more independent processing units also known as cores. A processor is also known as a central processing unit (CPU).