1. 456mohammed789's Avatar
    Ive seen that the exynos version of the note 4 is 64BIT compatable. However, KitKat is not 64BIT supported whereas Lolipop is. So does that mean my note 4 will use its 64BIT capabilities when it recieves the lolipop update? Thanks
    01-02-2015 11:31 PM
  2. Rukbat's Avatar
    Yes. That doesn't mean that you'll necessarily see much of a performance boost, though. The main difference the user sees between a 32 bit CPU and a 64 bit CPU is that 32 bits (numerically) can only hold a number that's 4GiB - 1. (Like 3 digits can only hold a number that's 1,000 - 1.) 64 bits can hold a number that's 18EiB - 1, so you can have lots of memory in a 64 bit device. The amount of RAM in your Note 4 won't increase when you get Lollopop, though - that's a hardware thing. But they can now make phones without regard to RAM size for the foreseeable future. 3GB is about the limit with 32 bits, with 64 bits if they wanted to come out with a phone with 32GB of RAM, or 320GB of RAM, the only problems would be size, heat and power. (Storage is different - we can, and do, currently address storage devices in the Terabyte range. And an exFAT-formatted card can hold 18EiB if the card is large enough - again, size and power will be the limiting factors for the foreseeable future. [I'm not going to say something like what Bill Gates didn't say, despite all the stories - that 18EiB is more than anyone will ever need. 100 years from now, that statement might be just as silly as the "640KB is more than ..." that Gates didn't say.])

    The fact that data can be transferred 64 bits at a time, rather than 32 bits at a time, will give the phone a slight increase in performance, but that increase alone is nothing to write home about. (If they get the bugs out of Lollipop, there may be some big improvements in performance due to other changes.)

    If youu want to see the next major changes in computing (like the change from writing numbers on paper to computers) you'll have to wait for quantum computers. That will make the supercomputers of today look like a child's first computer toy.
    01-02-2015 11:58 PM
  3. atcach's Avatar
    Hi, having a 64bit cpu means you also have 64 bit registers so operations can be done and (usually, depending on the bus) also memmory transfers at double speed. So yes, it should improve. Regards
    01-03-2015 05:38 AM
  4. cruz allen's Avatar
    Im running the exy5 and 5.0.1 in my korean note 4 and my benchmarks are saying the software is 32 bit although my chipset is 64 bit octocore exynos ? The heck?

    Apparently Sammy changed the name of my chip to 7 since its a whole new gen they felt it deserved a new naming scheme since its a53/a57 20nm. Lol

    Posted via the Android Central App
    02-20-2015 08:43 AM

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