The lesson that Sony (should have) learned from the Cell processor is one that people could have told them well before they began development on it; it doesn’t matter how theoretically powerful your processor is if it is so complicated and/or poorly suited to gaming that developers can’t approach the theoretical limits. For IBM the Cell processor was paid for research and development, and they will likely use some architectural elements in future processors; but you probably won’t see a "true" successor to the Cell processor unless Sony and/or Toshiba pays IBM to develop it.







