When Apple unveiled the iPad, the fast rendering of the user interface raised a lot of attention. Apple just said that the iPad is powered by their own chip called the Apple A4. Apple did not reveal further details about the A4, but we have learned in the meantime that it is an ARM based SOC and PowerVR SGX graphics.
Arstechnica has published a new report that tries to uncover the A4.
Their conclusion is that the Apple A4 is a stripped down ARM Cortex A8 core. Apple cut away all units that deal with I/O that the iPad does not have. The role of P.A. Semi in the design of the A4 remains to be a mystery as cutting away stuff does not take much effort. According to Arstechnica, P.A. Semi could have design a new power management for the A4, making it super efficient.
Apple has possibly once again achieved with the A4 more with less. This is a kind of magic that we see in a lot of Apple products.
More Apple iPad News.