Il y a ça sur le site de sony :
Cell Broadband Engine SUMMARY
Cell is Multi-Core
Contains 64-bit PowerPC Architecture™
Contains 8 Synergistic Processor Elements (SPE)
Cell is a Flexible Architecture
Multi-OS support (including Linux) with Virtualization technology
Path for OS, legacy apps, and software development
Cell is a Broadband Architecture
SPE is RISC architecture with SIMD organization and Local Store
128+ concurrent transactions to memory per processor
Cell is a Real-Time Architecture
Resource allocation (for Bandwidth Management)
Locking Caches (via Replacement Management Tables)
Cell is a Security Enabled Architecture
Isolatable SPE for flexible security programming