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Real world power consumption measurements from triple 7970's

Discussion in 'AMD / ATI' started by Stu @ MSD, Mar 23, 2012.

  1. Stu @ MSD New Member

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    Hi,
    Now my water cooled rig is up running and stable, I thought I would offer some info I have recorded thats kind of interesting.

    During benching and gaming, I have been creating a spreadsheet of everything I do and that includes power draw at the mains outlet. I was very surprised to find that most games dont stress the PSU anything like benchmarking. I thought the figures would be much closer.

    The Test Rig: (For power consumption reference)
    • ASUS Maximus IV Extreme-Z
    • i7 2600K @ Std settings
    • 3x AMD 7970HD in Tri-Fire @ std settings
    • 2x 240GB OCZ SSD's
    • 3x 1TB Velociraptors
    • Corsair Vengeance 8GB DDR3 @ 1866
    • XFX 1250W PSU
    • 1260 & 360 Radiators fed with D5 pump
    • A few lovely lights... lol


    Results as follows:
    (All settings maxed for each game, using eyefinity at 5760x1200)


    Benchmarking:
    • 3D Mark 11 (Performance) – 880w
    • Heaven 2.5 – 898w
    • 3D Mark Vantage (Performance) – 906w
    • Furmark on 3 screens – 908w
    • Aida 64 stability test - 1092w

    Gaming:
    • Mass Effect 3 - 565w
    • Shift 2 unleashed – 570w
    • Syndicate – 580w
    • Skyrim – 620w
    • Hawx 2 – 641w
    • Alan wake – 720w
    • Crysis 2 – 780w

    There is little point to this topic, other than to show that during gaming, your PSU may not be quite as stressed as you think. Its during benchmarking that you need the extra watts for synthetic loads.

    Please Note:
    These figures were taken with everything at standard clocks so its a valid benchmark. Overclocking will increase the current required.
     
    Last edited: Mar 23, 2012
    Law-II, cadaveca, jaredpace and 2 others say thanks.
  2. zargana

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    Nice rig and test.

    The results in gaming make me think, 1 of the 7970 sleeps in game mode that's for sure.

    Thanks.
     
  3. Crap Daddy

    Crap Daddy

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    Nice man. Can you provide overclocked results?
     
  4. GotNoRice

    GotNoRice New Member

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    Looks almost efficient compared to my 2x 4870x2 setup lol. I hit 1173w during Furmark.
     
  5. jaredpace

    jaredpace New Member

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    Can you do overclocked and overvolted cpu + gpu please?
     
  6. Bambooz

    Bambooz New Member

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    A bit more specific please.. Model number etc?
    Without real-world PSU efficiency numbers etc. of the PSU, the results aren't really accurate.
     
  7. brandonwh64

    brandonwh64 Addicted to Bacon and StarCrunches!!!

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    Also Can you put in BF3 as well since its a more GPU dependent game?
     
    Crunching for Team TPU

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