MacPro5,1 benchmarks of different memory-configurations

Discussion in 'Mac Pro' started by mikeboss, Feb 5, 2015.

  1. mikeboss macrumors 65816

    mikeboss

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    #1
    Geekbench V 3.2.2 (64-bit) Intel Xeon W3690 RESULTS MEMORY

    3x4GB @1333MHz Single-Core Score 2202 Multi-Core Score 2834
    4x4GB @1333MHz Single-Core Score 2010 Multi-Core Score 2295
    3x8GB @1333MHz Single-Core Score 2465 Multi-Core Score 3240
    4x8GB @1333MHz Single-Core Score 2142 Multi-Core Score 2539

    full results can be downloaded (HTML files)
     

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  2. todesto macrumors member

    todesto

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  3. mikeboss, Feb 5, 2015
    Last edited: May 21, 2015

    mikeboss thread starter macrumors 65816

    mikeboss

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    #3
    yes, it's well known that 3 DIMMs will result in the best performance (intel X58 has three memory channels). what surprised me was that the difference from worst to best config can be up to 40% :eek:
     
  4. crjackson2134 macrumors 68020

    crjackson2134

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    #4
    Wow, never expected to see that much difference.
     
  5. SoyCapitanSoyCapitan macrumors 68040

    SoyCapitanSoyCapitan

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    #5
    So will 3x16GB score even higher? Is multicore scores higher with large memory sticks too?
     
  6. mikeboss thread starter macrumors 65816

    mikeboss

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    #6
    I highly doubt that 3x16GB will lead to higher scores. AFAIK all available 16GB DIMMs are registered ones and they are a little bit slower (by design). but then again, I never benchmarked R-DIMMs...
     
  7. mikeboss thread starter macrumors 65816

    mikeboss

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    #7
    bear in mind that these are not overall GeekBench scores but only the scores for the memory. but still, I was surprised that different DIMMs/setups can have this much of an impact.
     
  8. 666sheep macrumors 68040

    666sheep

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    #8

    Quick test with single 5690 and 3x 16GB 1333 (10.8.5) gives below:

    Memory performance SC 2400 MC 3123

    I didn't bother with restarting, just closed all apps except Firefox, iTunes, Textedit and did a purge in Terminal.
    Perhaps newer OS and restart would give a better scores, but I'm lazy today ;)
     
  9. SoyCapitanSoyCapitan macrumors 68040

    SoyCapitanSoyCapitan

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    #9
    Well that's the same ball park as 8GB sticks so that's the limit.
     
  10. 666sheep macrumors 68040

    666sheep

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    #10
    I'll try more "lege artis" with Yosemite or El Cap someday, but I don't expect a much of an increase if any.
     
  11. wdhall macrumors newbie

    wdhall

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    NW USA
    #11
    Thanks so much for this timely info., I am in the process of upgrading a 2nd hand 4.1 (5.1 EFI flash, 5690 Xeon, etc.) and was wondering about the best memory configuration.

    It looks like I need to pick up another 8GB DIMM (http://eshop.macsales.com/item/Other World Computing/8566D3ECC8GB/) to go with the new pair of the same I just picked up on Ebay for $70 and I'll be set.

    It would be nice to go with 48GB but's that's twice the money and I don't think I'll need it.

    Interesting however is my Geekbench memory multi-core score with the stock 6GB 1066 RAM is 2971.
     

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