Though it is believed that both, the iPhone and iPod Touch, are powered by similar platforms, significant differences in performances of these devices have been noted.
As per the reports from a mobile developer firm, Handheld Games Corp., the performance of their 3D TouchSports Tennis game is different across both iPod Touch and iPhone, and therefore they had to optimise the game for these devices.
The difference of performances is attributed to the fact that these devices sport distinct processors; the 2nd generation iPod Touch incorporates a robust 532MHZ processor, whereas the iPhone includes a processor of 412MHz. While both these devices are powered by ARM processors, theoretically capable of delivering performances at 620-667 MHz, Apple has apparently clocked down the speed of processors to enhance the battery life.
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