
According to VGleaks and then supported by alleged industry insiders posting on NeoGAF
Main Application Processor
PowerPC architecture.
Three cores (fully coherent).
3MB aggregate L2 Cache size.
core 0: 512 KB
core 1: 2048 KB
core 2: 512 KB
Write gatherer per core.
Locked (L1d) cache DMA per core.
Main Memory
Up to 3GB of main memory...