The Xbox 360 processor contains three CPU cores.
Microsoft developed the processor with IBM, and its three PowerPC-based cores run at 3.2 GHz. Each core supports two hardware threads, allowing the system to handle six simultaneous hardware threads. This design was intended to provide strong parallel processing for games, simulation, artificial intelligence, and operating-system tasks.
The chip was part of the Xbox 360’s custom system architecture rather than a standard desktop processor. Its code name, Xenon, is often confused with the console’s broader development names or with the Xbox 360’s ATI graphics processor, which was known as Xenos.
The three-core design also distinguishes the Xbox 360 from later Xbox systems. The Xbox One used an eight-core AMD Jaguar-based processor, while Xbox Series X and Series S use eight-core AMD Zen 2 CPUs. Thus, “three” specifically identifies the Xbox 360’s CPU core count.