| arsenicazure said: good to know.. any idea how the powerpc in the 360 would perform? |
Less than 40% in theory regarding max potential, in reality the Xenon is less efficient as it has to share L2 CPU cache between all three cores, each Cell SPE has super fast dedicated RAM to its disposal, making the design near 100% efficient (other common CPU architectures become increasingly more inefficient by adding more cores). Of course within the 360 design regarding the main RAM the Xenon also has to share bandwidth wth the GPU and using its main RAM it suffers far more from latency.
The 360 CPU is far more like a normal desktop PC CPU than the Cell is, apart from also being an in order processor like the Cell and its cores being nearly identical to the Cell's PPE the general design and layout is very different compared to the Cell. It would yield no performance advantage using it compared to a fast PC processor (only disadvantages).
