Cell (processor)

The Cell Broadband Engine (Cell/B.E.) is a 64-bit reduced instruction set computer (RISC) multi-core processor and microarchitecture developed by Sony, Toshiba, and IBM—an alliance known as "STI". It combines several elements: a general-purpose PowerPC core, named the Power Processing Element (PPE); and multiple specialized coprocessors, known as Synergistic Processing Elements (SPEs), which accelerate tasks such as multimedia and vector processing. The architecture was developed over four years, beginning in March 2001, with Sony reporting a development budget of approximately US$400 million. Its first major commercial application was in Sony's PlayStation 3 (PS3) home video game console, released in 2006. In 2008, a modified version of the Cell processor powered IBM's Roadrunner, the first supercomputer to achieve sustained one-petaFLOPS performance. Other applications include high-performance computing systems from Mercury Computer Systems and specialized arcade system boards. Cell emphasizes memory coherence, power efficiency, and peak computational throughput, but its design presented significant challenges for software development. IBM offered a Linux-based software development kit (SDK) to facilitate programming on the platform.