Here's the Xbox 360 CPU die:
They also have pictures of the CPU diagram and a photo of the Xbox 360 GPU die.
This new picture also reveals, for the first time, the transistor count for each part of the two-die design. The parent die has a total of 232 million transistors while the daughter die has 100 million, making the whole package a 330+ million transistor design. In comparison, an AMD Athlon 64 processor has approximately 205 M transistors while theRead on at TeamXbox