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Incorrect memory bandwidth ?

Discussion in 'GPU-Z' started by chaotic_uk, Mar 27, 2010.

  1. chaotic_uk New Member

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    why has the memory bandwidth dropped from 76.8 to 75 ?

    [​IMG]
     
  2. blkhogan

    blkhogan New Member

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    If I told u.. I'd have to kill u
    Thats about normal. I have my 5770 clocked a little over yours and mine isnt much higher.
    [​IMG]
     
  3. chaotic_uk New Member

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    it has only dropped with the latest version , when i change the memory to 1250 the bandwidth was 80.0gb/s but @ stock it has always read 76.8

    [​IMG]
     
  4. W1zzard

    W1zzard Administrator Staff Member

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    see the changelogs
     
  5. chaotic_uk New Member

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    why the change ? , it has always read gb/s has it not ? . so your readings are differant to ati's , is the change cause of the gtx4** series ?
     
  6. W1zzard

    W1zzard Administrator Staff Member

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    it has labeled it GB/s but calculated GiB/s .. now it calculates what it claims

    before: wrong, now: right .. now: lower ... would you prefer to see the wrong number?
     
    digibucc says thanks.
  7. W1zzard

    W1zzard Administrator Staff Member

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    actually .. is the number still too high ?

    1200 mhz are 1,200,000 hz * 128 bit = 153,600,00 bits per second * 4 (gddr5) = 614,400,000 bits per second / 8 (bits per byte) = 76,800,000 bytes / 1024 (mbytes) = 75,000 / 1024 (gbytes) = 73.242

    anything wrong with that ?
     
  8. chaotic_uk New Member

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    no but why do ati claim 76.8gb/s , it says this amount in the hardware info in ccc
     
  9. W1zzard

    W1zzard Administrator Staff Member

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    they divide by 1,000,000,000
     
  10. chaotic_uk New Member

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    so it's like harddrives then , ah i see now ;)
     
  11. skylamer

    skylamer

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    :d)
     
  12. dr emulator (madmax)

    dr emulator (madmax)

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    the uk that's all you need to know ;)
    if i where you boss i would just say it's more accurate now where people download it from
    so you won't have to do all the explaining over and over, just my two cents
     

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