Confused about PC Rating of my DDR3 RAM

Discussion in 'PC Hardware' started by ian82, Aug 11, 2012.

  1. ian82

    ian82 MDL Expert

    Mar 7, 2012
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    Is my 1600 MHz. DDR3 RAM a PC3 12800 ?? tha'ts what Im reading on newegg and other sites. but how do they calculate this PC rating and what is my RAM's PC? what is PC 3?
     
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  2. germulvey

    germulvey MDL Novice

    May 31, 2010
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    That represents the peak transfer rate from what I remember ie PC3 12800 - 12800 MB/s
     
  3. TCM

    TCM MDL Addicted

    Aug 25, 2011
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    1600000000/s*32Bit*2[1] = 102400000000 Bit/s = 12800000000 Byte/s

    For the rating, the correct multiplier of 1024 was apparently ignored. They simply used 1600*4*2 = 12800.

    [1] 32bit per transfer, DDR = dual data rate = *2, so you end up with 8 Bytes per transfer, 1600000000 times per second.
     
  4. ELiTEFX

    ELiTEFX MDL Novice

    Aug 30, 2012
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    Install CPU-Z. It's free. it will tell you all you need to know about your memory in the "SPD" tab.....:cool:
     
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