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The Power Processing Unit (PPU) is a 64-bit dual threaded in-order Power Architecture microprocessor core designed by IBM for use primarily in the game consoles Playstation 3 and Xbox 360, but has also found applications in high performance computing in supercomputers such as the record setting IBM Roadrunner. In most instances the PPU is joined by a 512 KB L2 cache to form what is called the Power Processing Element (PPE). The PPU is used as a main CPU core in three different processor designs: * The Cell Broadband Engine (Cell BE) which is used primarily in Sony's Playstation 3 gaming console. It uses the PPE and comes in three versions, a 90 nm, a 65 nm and a 45 nm part. * The PowerXCell 8i which is a version of the Cell BE with enhanced FPU and memory subsystem. It was only manufactured as a singe 65 nm version. * The XCPU which is used in a three core configuration and a unified 1 MB L2 cache inside Microsoft's Xbox 360. It comes in three versions, the 90 nm and 65 nm versions, and the 45 nm XCGPU with an integrated graphics processor from ATI. == Main features == * 64-bit, dual-threaded core * Typical 3.2 GHz clockrate * 32 KB L1 Instruction cache * 32 KB L1 Data cache * 512 KB Unified L2 cache, 8-way set associative in the PPE variant. * Compatible with 64-bit PowerPC ISA v.2.02 (POWER4 and PowerPC 970) * AltiVec SIMD functionality 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Power Processing Element」の詳細全文を読む スポンサード リンク
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