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he PS3 uses the Cell microprocessor, which is made up of one 3.2 GHz PowerPC-based "Power Processing Element" (PPE) and six accessible Synergistic Processing Elements (SPEs). A seventh runs in a special mode and is dedicated to aspects of the OS and security, and an eighth is a spare to improve production yields. PlayStation 3's Cell CPU achieves a theoretical maximum of 230.4 GFLOPS in single precisionfloating point operations and up to +15 GFLOPS double precision using iterative refinement for the solution of linear equations.[1][2]
The PS3 has 256 MB of Rambus XDR DRAM, clocked at CPU die speed.[1] The PPE has 64 KB L1 cache and 512 KB L2 cache, while the SPEs have 2 MB local memory (256 KB per SPE),[3] connected by the Element Interconnect Bus (EIB) with up to 307.2 GB/s bandwidth.
