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  1. #1
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    Dual 6-core vs Single 12-core

    I'm certain this has been debated before, but I'm not sure if anyone has actually come to any kind of solid conclusion.

    We're buying 30+ nodes for our elastic computing engine and I'm debating between a single 12-core AMD G34 processor and two 6-core AMD C32 processors for the nodes. Anyone have any statistics to prove that one is better than the other? I'm leaning towards the two 6-core procs, but would like some input. Another thing I'm considering is that the dual CPU setup would draw about twice the power as the single CPU. Either setup would cost about the same.
    Last edited by Encrypted; 01-10-2014 at 04:25 AM.
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  2. #2
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    why go for a single g34 cpu ? the dual cpu boards are not that much more, if you need a bunch of cpu power why not go with less 2 cpu servers ? a dual cpu board will cost you less the 2 single cpu boards.

  3. #3
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    Quote Originally Posted by cyberhouse View Post
    why go for a single g34 cpu ? the dual cpu boards are not that much more, if you need a bunch of cpu power why not go with less 2 cpu servers ? a dual cpu board will cost you less the 2 single cpu boards.
    You misunderstand me. It's one server eitherway... A single 12-core server or a single dual 6-core (two 6-core procs) server.

    I'm actually leaning towards the single 12-core G34 now, mainly because of the power consumption.
    Last edited by Encrypted; 01-10-2014 at 04:40 AM.
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  4. #4
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    if you can afford the extra cost then i would get a dual cpu board and do a single 12 core so in the future if you need it you can upgrade to dual cpu's.

    cheaper later to add a cpu and some ram then build a second server.


    Quote Originally Posted by Encrypted View Post
    You misunderstand me. It's one server eitherway... A single 12-core server or a single dual 6-core (two 6-core procs) server.

    I'm actually leaning towards the single 12-core G34 now, mainly because of the power consumption.

  5. #5
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    Missing the point here.. I'm primarily talking about performance. I'm buying ~30 of these for a large-scale computing deployment, so they're not getting upgraded.
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  6. #6
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    I am sure it all depends on how much memory you'd need. A dual cpu mostly performs better than a single cpu, depending off course what 'type' you are using.
    Check on cpubenchmark and compare the benchmarks for performance to see which one performs best.
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  7. #7
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    Hi,

    Lets say your choice of CPUs are like following.

    - Single AMD Opteron™ 6348 ( 12Cores, 2.8GHz, 16MB Cache, 115W )
    - Dual AMD Opteron™ 4340 ( 6 Cores, 3.5GHz, 8 MB Cache, 95 W )

    1- So as you see, if you take dual CPU you have totally 12x 3.5GHz speed, and if you take single cpu, you only have 12x 2.8GHz

    2- You have same Cache on both options, 16MB or 2x 8MB.

    3- Power usage of dual CPU may be higher than sinble CPU.

    If you can give the exact model of your CPU you are looking for, it is easier to find out which option is better for you.

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