So what do these latest rumored specs include? Try a trio of 3.5+ GHz, SMT-equipped PowerPC cores built onto one silicon die. The three processor cores will apparently share a 1MB L2 cache with the console's 500+ MHz ATI graphics chip, which will be able to read from L2 cache and main memory simultaneously. The graphics chip will supposedly have 10MB of on-board memory and support shader features beyond Shader Model 3.0. It looks like the graphics chip will have a single shader unit that can process either pixel or vertex shader instructions, potentially load-balancing the two.
Again, these are unconfirmed specs. However, they don't seem out of the realm of possibility. As one developer put it: "If this is a hoax, which I doubt, it's a hoax so close to the truth that it hardly makes any odds."