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The Performance-Per-Watt, Efficiency Of GPUs On Open-Source Drivers

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  • Calinou
    replied
    Interesting benchmark.

    How about a comparison with the proprietary drivers (probably just to cry a little)?

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  • schmidtbag
    replied
    Originally posted by droidhacker View Post
    dpm won't make much difference when your objective is to test the "full out" performance, since it will automatically scale up to full power.
    Besides, the AMD cards still came out on top in terms of PPW. Speaking of which, I'm actually pretty surprised intel's GPUs are relatively inefficient.

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  • Michael
    replied
    Originally posted by GreatEmerald View Post
    The heat graph was pretty interesting, though. I still don't get how the 4890 has lower heat than the 5450...

    The HD 5450 was passively cooled while the ASUS HD 4890 has a very large cooler.

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  • GreatEmerald
    replied
    Or the cards being on the "battery" profile. Right now the comparison between radeon and nouveau doesn't really make sense, as the former is pretty much on performance, and the latter on powersave...

    The heat graph was pretty interesting, though. I still don't get how the 4890 has lower heat than the 5450...

    Leave a comment:


  • MannerMan
    replied
    Originally posted by droidhacker View Post
    dpm won't make much difference when your objective is to test the "full out" performance, since it will automatically scale up to full power.
    True that. Guess idle power-usage would be more interesting with/without DPM.

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  • droidhacker
    replied
    There is a major flaw in this test that was nearly alluded to in the write-up; when the gpu performance goes up, the *whole system* power consumption goes up in order to be able to feed the GPU as much data as it is able to consume. It would be very helpful to be able to test the power consumed *specifically* by the GPU -- which may be possible on discrete units that have their own power plug.

    It is pretty impressive that the best performing GPUs are also able to generate the lowest total system power consumption... though I suspect that if it was testing GPU power consumption specifically, the difference would be even greater.


    Anyhow... AMD FTW!

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  • droidhacker
    replied
    Originally posted by MannerMan View Post
    Was radeon.dpm enabled for the modern ATI/AMD cards?
    dpm won't make much difference when your objective is to test the "full out" performance, since it will automatically scale up to full power.

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  • MannerMan
    replied
    Was radeon.dpm enabled for the modern ATI/AMD cards?

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  • brent
    replied
    Michale, why do you even bother to include the Radeon R7 260X if you don't want to update the firmware? This is a trivial fix.

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