Apple has confirmed the iPad will be using PowerVR SGX graphics. This is the same family of graphics processors already used in the iPhone and iPod touch. This confirmation comes from documentation in Apple’s latest iPad SDK Beta 3 released to developers.
Using OpenGL ES on iPad is identical to using OpenGL ES on other iPhone OS devices. An iPad is a PowerVR SGX device and supports the same basic capabilities as other SGX devices. However, because the processor, memory architecture, and screen dimensions are different for iPad, you should always test your code on an iPad device before shipping to ensure performance meets your requirements.
If there was any doubt, Apple is a big investor and licensee in Imagination Technologies, the company who creates the PowerVR SGX chips. Apple has used these chips through all of the iPhone and iPod touch models to date. The A4 chip that Apple designed for the iPad, will have both an ARM-based processor to power the device, and the PowerVR SGX GPU in a single chip.
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