Wiens, Kyle. «Apple A4 Teardown», 05-04-2010. Arxivat de l'original el 10 agost 2013. [Consulta: 15 abril 2010]. «cIt's quite challenging to identify block-level logic inside a processor, so to identify the GPU we're falling back to software: early benchmarks are showing similar 3D performance to the iPhone, so we're guessing that the iPad uses the same PowerVR SGX 535 GPU.»
Wiens, Kyle. «Apple A4 Teardown», 05-04-2010. Arxivat de l'original el 10 agost 2013. [Consulta: 15 abril 2010]. «cIt's quite challenging to identify block-level logic inside a processor, so to identify the GPU we're falling back to software: early benchmarks are showing similar 3D performance to the iPhone, so we're guessing that the iPad uses the same PowerVR SGX 535 GPU.»