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    Why not GDDR3?

    Discussion in 'Gaming (Software and Graphics Cards)' started by -Recoil-, Oct 10, 2007.

  1. -Recoil-

    -Recoil- Notebook Consultant

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    Well i looked at ATI's website about the X1400. It says that it is 128-bit 4-channel DDR1/DDR2/GDDR3 memory interface compatable. Yet when i run GPU-Z, it says its running at 64-bit with DDR2 memory interface.

    So why isnt it running 128-bit at GDDR3?
     
    -Recoil-, Oct 10, 2007
    #1
  2. frazell

    frazell Notebook Deity

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    Because your cardmaker chose the DDR2 option?
     
    frazell, Oct 10, 2007
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  3. Jalf

    Jalf Comrade Santa

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    Because DDR2 is cheaper than DDR3.
     
    Jalf, Oct 10, 2007
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  4. Ice-Tea

    Ice-Tea MXM Guru NBR Reviewer

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    1)DDR3 is more expensive than DDR(2)
    2)Routing a 64bit bus saves on PCB estate (so the PCB can be smaller if that is an issue or cheaper by saving 2 layers)
    3)You don't need all that for that GPU. Would be like putting F1 tyres on a VW Beetle.
     
    Ice-Tea, Oct 10, 2007
    #4
  5. narsnail

    narsnail Notebook Prophet

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    in other words the GPU is slow so putting faster memory would bottleneck it and would therefore waste more money and would cost more for no reason
     
    narsnail, Oct 10, 2007
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