What is sideport memory and how to use?

Discussion in 'Hewlett Packard' started by miner, Jul 28, 2008.

  1. seeking2

    seeking2 Pen Pal - Newbie

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    Question in the title
     
  2. atom

    atom Pen Pro - Atomic Member

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  3. seeking2

    seeking2 Pen Pal - Newbie

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    thank you for directing me
     
  4. atom

    atom Pen Pro - Atomic Member

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    No problem, and also from what I understand about it, it just seems to be something akin to "additional ram". Hopefully an expert can come in here and give a proper explanation though.
     
  5. cloudnine

    cloudnine Scribbler - Standard Member

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    Sideport memory is basically what ATI calls the dedicated frame buffer memory for the integrated graphics chip, in this case with the tx2500z, there is 64MB of local memory dedicated to graphics.

    Sideport memory is runs considerably faster than system memory, therefore providing noticeable increases in performance over standard IGPs which constantly accesses system memory.
     
  6. atom

    atom Pen Pro - Atomic Member

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    Ah, so in this case, the IGC has shared memory with the ram, but this sideport memory gives 64MB of dedicated memory (ram?) to the IGC?
     
  7. seeking2

    seeking2 Pen Pal - Newbie

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    Thank you for all of your replies....I guess if I am to understand this properly.....the only thing that I have to be worried about is that it is installed.......beter to have installed then not.

    Again,

    Thank you
     
  8. miner

    miner Scribbler - Standard Member

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    Yeah, the main reason for the frame buffer is that the IGP need not have to access the memory controller which in AMD systems is located in the cpu to access the memory. In earlier platforms this used to wake the cpu up from low power state just to refresh the buffer. Thats why in Griffin the memory controller has its own separate power plane, so even if the IGP needs to refresh it doesnt need to access the cpu at all(if it has sideport memory) or if necessary just uses the memory controller to access the RAM not waking up the cpu cores from their low power state.
     
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