If you're one of those who took the leap into a first wave of Intel-based smartphones like the RAZR i, you're likely the sort to wonder exactly what makes them tick. SemiAccurate certainly does: it just posted some previously inaccessible diagrams that help reveal how Medfield's system-on-a-chip heart, Penwell, is mapped out. As a die shot shows, the Atom core is seemingly the least important part of the design -- the PowerVR SGX 540
