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Power Processing Element information


Power Processing Element
General information
Launched2005
DiscontinuedPresent
Marketed byIBM, Sony, Microsoft
Designed byIBM
Common manufacturer
  • IBM
Performance
Max. CPU clock rate2.8 GHz to 3.2 GHz
Cache
L1 cache32 KB instruction + 32 KB data
Architecture and classification
ApplicationGaming Console, HPC
Technology node90 nm to 45 nm
MicroarchitecturePPU
Instruction setPowerPC 2.02
Physical specifications
Cores
  • 1
GPUsXenos, in the XCGPU variant.
Products, models, variants
Variant
  • Cell BE, XCPU, XCGPU, PowerXCell 8i
History
SuccessorIBM A2

The Power Processing Element (PPE) comprises a Power Processing Unit (PPU) and a 512 KB L2 cache. In most instances the PPU is used in a PPE. The PPU is a 64-bit dual-threaded in-order PowerPC 2.02 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.

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 single 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.

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