• what are the main differences between cortex A7, A9, A53

    What are the main/important features added/updated?

    Thank you.

  • Barriers in in-order cores like cortex-A53, A7

    Hi experts!

    As you know, power efficient arm like cortexA7, A53 has in-order pipleline.
    However as far as I understanding, Barriers like dmb, dsb, isb are related with out-of-order memory access.
    But barriers are even used in in-order cpus.
    What is for?
    Can…

  • MOESI state encoding of Cortex-A7

    Hi,

    I am looking at Cortex-A7 TRM, In "Direct Access to Internal Memory"

    we can see several information regarding a cache line. Those are:

    1. Current data in cache

    2. its 4-bit MOESI state,

    3. Outer Memory Attribute

    4. its tag

    5. NS State.

    However…

  • Is there any available data about the PPA comparison b/w Cortex-A7 and Cortex-A53

    Performance (DMIPS/CoreMark/SpecInt, etc.), Power and Area comparison on an apple-to-apple basis? Thanks a lot!

  • Cortex-A7 pipeline is non-symmetric, what does this attribute mean?

    Cortex-A7 pipeline is non-symmetric, what does this attribute mean?

    My understand is that cortex-A7 pipeline's five entries does not have the same two, in the contrary, the cortex-A15 have the two entries are the same.

    ca7pipeline.PNGca15pipeline.PNG

  • Which is better of thees CPUs

    Which is better of thees CPUs:

    Cortex A53 octa core 1.5 ghz,

    Cortex A7 Allwinner T8 Eight core 2.0 ghz,

    Cortex A9 Quad-Core 1.8 ghz ?