|International Business Machines Corporation|
Electronics Processor Product Number : "Waternoose" Xbox 360 ProcessorProcessor
Cores: 3 L1 cache (32kB/32kB), L2 Cache (1024kB) Technology: 90nm
Xenon is the CPU that is used in the Xbox 360. The processor, internally codenamed Waternoose by IBM and XCPU by Microsoft. "The basic design is a 64-bit PowerPC architecture, with the complete PowerPC ISA available." It is different from the Intel Pentium III in the original Xbox: the Xenon CPU is composed of three symmetrical cores on a single die, each core has two symmetric hardware threads (SMT), for a total of six hardware threads available to games. Each individual core also includes 32 KiB of L1 instruction cache and 32 KiB of L1 data cache.