AMD memory speed issues

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  1. Posts : 79
    Windows 10 Pro x64 Build 14393.0 Slow Ring

    Here are the shots at 2133

    AMD memory speed issues-2016_01_17_14_17_061.png AMD memory speed issues-2016_01_17_14_17_252.png
    As far as I know, Coram is correct and our MOBO does not support DDR4 memory.
      My Computer

  2. Posts : 118
    W10Pro x 4

    I cant wait for Zen, Doverboy...
      My Computers

  3. Posts : 79
    Windows 10 Pro x64 Build 14393.0 Slow Ring

    MaxMEM at 2133 and 1866 for me:

    AMD memory speed issues-2016_01_17_14_30_032.png AMD memory speed issues-2016_01_17_14_35_541.png
      My Computer

  4. Posts : 118
    W10Pro x 4

    Hmm, could that GB difference be that you use G-Skill and I Kingston... seems a lot? Any OC?
    I run at 2400, mine should be faster...or
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  5. Posts : 17
    windows 10
    Thread Starter

    Just look at the 3 readings:
    My i7-Brix ddr3-798 ( 1596)
    30,916, 20,688 21,426
    then my AMD ddr3-1070( 2140)
    14240, 12,015, 8092
    so far the weaker memory kills the AMD with 2133 mem.
    looking at yours
    11,378, 11,294, 5680
    So the issue I guess is why less mem speed on AMD?
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  6. Posts : 79
    Windows 10 Pro x64 Build 14393.0 Slow Ring

    Coram Daes said:
    I cant wait for Zen, Doverboy...
    Sorry, just trying to help with another comparison with pretty similar specs...
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  7. Posts : 17
    windows 10
    Thread Starter

    i ran the old mem versus the new "faster" but results the same.

    AMD memory speed issues-2016-01-17-4-.png

    Two conclusions. I should return the faster on paper Kingston. Score no better than the old slower memory ( GSkill ).

    Also look at my i7 brix results for slower yet again memory on paper. it achieves twice the AMD score.

    Now why is that? Is it a known fact AMD cpus do a lousy job on the memory?

    OR do I have setting wrong? Can anyone on an AMD cpu fx-8350 or better get score up to 30,000 like the i7 brix?

    Attached Thumbnails Attached Thumbnails AMD memory speed issues-2016-01-17.png  
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  8. Posts : 4,439
    Win 11 Pro 22000.652

    Archie123 said:
    looking at your cpu/z screenie for that ram your northbridge is reporting 2207? remember its dual channel so the 1070.2 is x 2.

    apologies if im getting the wrong end of the stick but your new kingston ram is running perfectly in that rig :)

    remember the ram in your other rig is DDR4 regardless of frequencies DDR4 is much faster in benchmarks (not so much in real world applications)
    Probably not because it's dual channel, but rather because it's DDR (double data rate, 2 transfers per clock tick.). Quad channel memory doesn't report 4X the clock frequency.

    I believe that DDR4 and DDR3 have about the same performance at the same clocks. DDR4 uses a lower voltage, and is scalable to higher clock frequencies.
      My Computers

  9. Posts : 4,439
    Win 11 Pro 22000.652

    Just out of curiosity, I looked up:

    PassMark Software - Memory Write Performance with AMD CPUs Benchmark Charts

    PassMark Software - Memory Write Performance with Intel CPUs Benchmark Charts

    I don't pretend to understand why, but these show much higher memory write speeds for Intel CPUs than for AMD. It's similar for uncached reads.

    Weird. I haven't stayed current with AMD CPUs since my last system with one of their processors, in the Socket 939 days.
      My Computers

  10. Posts : 17
    windows 10
    Thread Starter

    very valuable input

    thanks for looking at passmark. It confirms the AMD lower than the test Intel.

    But now why are the two AMD's the same even though one is higher speed than the other?
      My Computer


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