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→Central Processing Unit (CPU)
== Central Processing Unit (CPU) ==
<google>IOSBOX</google>
The central processing unit (CPU) of the iPhone 4 is the Apple A4, an Apple designed system-on-a-chip (SoC) consisting of an ARM Cortex A8 chip combined with an Imagination Technologies PowerVR Graphics Processing Unit (GPU). This Cortex A8 processor is designed by a British company called ARM Holdings that specializes in designing chips and then licensing those designs to third parties who then manufacture them. This differs considerably from the approach taken by companies such as Intel who both design and manufacture their own chips.
The Cortex A8 chip is based on the ARMv7 processor architecture and was chosen by Apple for its combination of high performance and low power requirements.
== Graphics Processing Unit (GPU) ==
