Anyone with any bit of gadget knowledge can take a look at the various tear downs of the iPhone 3GS and see that it is truly a modern marvel of engineering. The latest iPhone brings a much upgraded graphics chip that goes by the way of the “PowerVR SGX”. Now, we know that this chip is many times faster than the old chips found in the previous iPhones and iPod Touches. However, a bigger mystery pertained to what model the chip actually was as there are many...