How fast in rpms is Flash memory?

Discussion in 'iPod' started by matthewcap, May 20, 2008.

  1. matthewcap macrumors member

    Joined:
    Sep 19, 2007
    #1
    How fast is flash memory compared to hard drive in RPMs?
     
  2. Eidorian macrumors Penryn

    Eidorian

    Joined:
    Mar 23, 2005
    Location:
    Indianapolis
    #2
    Flash memory doesn't have any moving parts. What specific performance aspect are you asking about aside from RPM?
     
  3. Sun Baked macrumors G5

    Sun Baked

    Joined:
    May 19, 2002
    #3
    All depends on how fast you can throw it.

    I know a pitcher can get it up to 96mph, though I don't know how fast it'll spin at that point.

    ---

    Anyhow, RPMs are not a measure of a drive speed.

    All that does is lower seek times.

    What really counts is the mechanical transfer speed in MB/sec ... this is the speed beyond the cache (which is also pointless since the bus sucks/fills the cache in no time) which makes the drive crawl to a lot slower speed.

    RPMs are about as effective at judging the speed of a drive as GHz is for comparing all the CPUs made in the world.
     
  4. matthewcap thread starter macrumors member

    Joined:
    Sep 19, 2007
    #4
    What is the mechanical transfer speed then of the Ipod Nano 3g and the Ipod classic?
     
  5. squeeks macrumors 68040

    squeeks

    Joined:
    Jun 19, 2007
    Location:
    Florida
    #5
    what are you talking about? a 2.0ghz g5 kicks the crap out of a 1.8ghz core 2 duo everyone knows 2.0 >1.8 :rolleyes:




    :D
     
  6. Sun Baked macrumors G5

    Sun Baked

    Joined:
    May 19, 2002
    #6
    The old HD iPods are likely about 40MB/sec.

    An old iPod nano may be 10MB/sec.

    Newer ones probably closer to 40-60 MB/s.
     
  7. alphaod macrumors Core

    alphaod

    Joined:
    Feb 9, 2008
    Location:
    NYC
    #7
    HD can transfer say 70MB/s, Flash memory around 60MB/s. SSD can go 300MB/s. Flash memory and SSDs are not the same. Yes SSD are based on flash memory, but the designs are different and so are the manufacturing costs.
     
  8. Sun Baked macrumors G5

    Sun Baked

    Joined:
    May 19, 2002
    #8
    Well he did ask about the iPods which have to go through the USB, and the old originaliPod Nano's tested were turd slow. So I may have been too generous for USB2 speeds I was remembering it as too close to FW400.
     
  9. Lebowski macrumors 6502

    Joined:
    Oct 10, 2005
    Location:
    Phoenix, AZ
    #9
    A standard flash chip can do the Kessel run in about 12 parsecs.
     

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