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Thread: Dual CPU

  1. #1
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    Dual CPU

    What I would like to know is if the 'dual CPU' is really a Physical two core CPU or a single CPU with dual threading capability? And does the Nokia E61 really have one.

  2. #2
    Nokia Developer Champion
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    Re: Dual CPU

    The architecture in general can be:

    - separate processors on separate chips (one application processor, and another baseband/modem processor for the cellular software stack) = dual-chip, or

    - it can be separate processors on a single chip (dual-core), or

    - it can also be a single processor (single-chip, single-core solution).

    As far as I'm aware, the E61 (as well as many others) would be in the category of single-chip, dual-core.

    However, the Nokia does not tend to publish the processor and hardware architecture details/specs of devices, and for application development it shouldn't even matter anyway (and there are in all likelihood devices designed using all three approaches above).

  3. #3
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    Re: Dual CPU

    In thah case does each core have individual speed of 220MHz as given or is it the combined speed of the 2 CPU

  4. #4
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    Re: Dual CPU

    The E61 and E61i have a DSP and an ARM 9 processor. The DSP and the ARM core can each run at different speeds and they usually do. This phone also has another set of processors (similar to above) for the communication side of things for GSM/GPRS/EDGE/UMTS network(s).

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