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    Dual Channel 533MHz ram question for 6000

    Discussion in 'Dell' started by p1rana, Jun 26, 2005.

  1. p1rana

    p1rana Notebook Enthusiast

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    I know that dual channel has been discussed before but the answer to whether having dual channel with 533MHz DIMMS is pointless was never clear. As far as I can figure it won't do anything since the FSB is 533MHz so having 1066MHz ram speed is only going to get bottlenecked at it. Is this wrong?

    Also, I was considering putting in the transcend 1gig stick into the 6000 that I just ordered. This seemed to be a popular option amoung the 9300 owners. Does anybody know if this is a good option? Thanks for the help!
     
  2. mikeakajb

    mikeakajb Notebook Consultant

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    The comparison was between dual channel 400 mhz and dual channel 533 mhz. The significant difference performance wise is negliable. But Dual channel compared to single channel ddr is quite a big difference. Think of it like this with single channel you have 1 feed going to the whole computer to use so there is a bottleneck basically on the amount being fed to the computer and with dual there are now 2 lines feeding to the whole computer... granted this is going to be bottlenecked but know its at the memory controller and not bottlenecked at the amount being fed to the memory controller. This quite dramatic in terms of the amount of data being avaliable and transfer rate of the ram.

    Someone posted a link down in the forum about a page that explains this better.

    look up intel dual channel white paper

    In short. 10 Pigs are eating out of 1 bucket and they are fighting to get to the feed in the one bucket. With dual channel there are now 2 buckets for the 10 pigs to eat out of basically.
     
  3. antskip

    antskip Notebook Deity

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  4. p1rana

    p1rana Notebook Enthusiast

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    Thanks to both!
     
  5. chong67

    chong67 Notebook Deity

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    Compared to dual channel PC2-4200 vs dual channel PC2-3200, did you say the speed is small? Like make no difference? How much slower?
     
  6. x3lda

    x3lda Notebook Enthusiast

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    They actually conducted tests for the Dell Inspiron 6000 to see what the difference is. For the dedicated graphics version, dual channel 533/dual channel 400/single channel 533 are all identical in memory bandwidth. Only 400 single channel is slower. dual channel 533 is actually a few mb slower in memory bandwidth than single channel 533. All tests were conducted with Sandra and the memory bandwidth for ddr400 is 2700 while the rest were around 3000. there were no 3 gb+ bandwidth scores for the laptop not matter in what configuration.

    Personally, i have a dell 6000 with 256 mb of ddr 400 with a stick of 256mb 533 coming. Even with one sodimm in the notebook, the bios claims that it is dual channel. Personally, i think the memory controller isn't working in dual channel mode regardless.
     
  7. goga

    goga Notebook Consultant

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    I guaranty you will get much more bigger performance with only 133MHz faster CPU than with quadro mucho dual channel memory.
     
  8. chong67

    chong67 Notebook Deity

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    I now have two PC2 3200 in my 6000 for total of 512MB. No point for me to do two PC4200 to replace it right?