If you saw the previous article ( iPhone 3Gs Graphics: You Will Be Shocked ) on FSMdotCOM, you know that one of the most impressive hardware improvements in the iPhone 3Gs compared to the previous generations is the impressively powerful graphics unit, the PowerVR SGX. MICHAELSD has spotted a demo video showing the kinds of thing the new chip is capable of (after the break).The demo is being run on a Pandora devboard (a pre-production model of the Pandora game console) running a PowerVR SGX chip.