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A note on Processors used in Apple iPhone

November 20th, 2010


Apple does not advertise what processor has been used in its highly successful iPhones – and most users do not not cares. But as a techie enthusiast you may be interested to know what is under the hood. Here is a note compiled to give you information about the processor used in different flavors of the Apple iPhone.

- The original iPhone and iPhone 3G is powered by the Samsung 32 bit ARM 11 processor ( ARM 1176JZ to be exact). This ARM 11 processor is capable of running at 620 MHz, however, since iPhone is does not need any great amount of processing power, it is underclocked to 412 MHz. No wonder this is a very slow speed even considering a year or two ago when the iPhone was launched. Apple is not known to use the latest or fasted processor. No wonder techies hate it.

- The iPhone 3GS is powered by Samsung S5PC100 processor, which essentially has cortex A8 processor. The processor itself has capability to run at 833 MHz, however, Apply underclocks it to 600 MHz. This speed is still good enough to get you the video compression that is used in iPhone 3GS.


- The latest Apple iPhone 4 is powered by the Apple A4 processor which is based upon the ARM Cortex-A8 core. The exact frequency at which the A4 processor runs is not available. However, it has been guessed that it runs at variable frequencies ranging between 750 MHz to 800 MHz.

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  1. Techie
    January 3rd, 2011 at 11:33 | #1

    I’m a techie, so I know that Apple underclocks the CPU to get longer battery life. They are GREAT engineers who know how to optimize all the variables for their end-users and that CPU clock is just a piece of the end user experience. That’s why it is the best smartphone on the market and you don’t need to spend hours / days trying to figure out how to tweak it yourself.

  2. Eric Bogatin
    January 3rd, 2011 at 12:27 | #2

    Techie you are a bull s***, who does not understand the technology. When the whole world was using Intel core i5 processors Apple used Macbook in their dual core processor.

    Yes Apple is a smart sales guys and kids like you get entrapped.

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