Mac Pro Power Consumption

Discussion in 'Mac Pro' started by earthwriter, Jun 4, 2017.

  1. earthwriter macrumors newbie

    earthwriter

    Joined:
    May 7, 2017
    #1
    We don't expect low power consumption from a Mac Pro workstation, that's just how it is, however we have been monitoring usage via a Amwatt load tester and while idle is around 240 watts with the HD 7850 Card in it and 8 cores, we have noticed that sleep is around 30 watts and off is still 12 watts any idea why it's consuming power when it's off and the monitor is off as well? The only way it's not consuming any watts is unplugged. Do you leave your Mac Pro in sleep all night or do you just leave it off or do you unplug it?
    Thanks
     
  2. AidenShaw, Jun 4, 2017
    Last edited: Jun 4, 2017

    AidenShaw macrumors P6

    AidenShaw

    Joined:
    Feb 8, 2003
    Location:
    The Peninsula
    #2
    Which model?

    My E5-1650v2 128 GiB system (essentially the 6-core MP6,1 with GTX 960) idles around 40 watts.

    The cMP systems are power pigs. 240 watts for doing nothing is disgraceful.
     
  3. pb69 macrumors member

    pb69

    Joined:
    May 5, 2017
    Location:
    New Mexico
    #3
    Mine will not wake up from sleep properly so I leave it on and turn off my display.
     
  4. mattspace macrumors 6502a

    mattspace

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    Jun 5, 2013
    Location:
    Australia
    #4
    just checked, 12 core 4,1/5,1 uses 20w when sleeping here.
     
  5. earthwriter thread starter macrumors newbie

    earthwriter

    Joined:
    May 7, 2017
    #5
    Ok so it looks like something may be off here, the PSU perhaps?
    --- Post Merged, Jun 4, 2017 ---
    We honestly don't know which one we have all we can tell you is this is what get in our About This Mac we just update to 2.1 for the CPU upgrade the serial number on everymac.com says we have a MA356LL/A A1186 (EMC 2113) no mention of cMP it sounds like your E5 processor is in a much newer energy efficient MP that is worth a lot more! So comparison wise I don't see it's really fair to judge, we would like to hear from someone who has older an system with the same kind of processors and similar graphics card setup.
    --- Post Merged, Jun 4, 2017 ---
    This might help shed some light on the power consumption, it's how it is not much can be done about it. https://discussions.apple.com/thread/2574404?tstart=0
     
  6. h9826790 macrumors 604

    h9826790

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    Apr 3, 2014
    Location:
    Hong Kong
    #6
    Your power consumption is normal.

    https://support.apple.com/en-us/HT201796

    The high idle power consumption is because the technology inside is old, power inefficient. You are talking about a 10 years old computer. If you use the today standard to measure it, it is a power hog. The only way to avoid that is to abandon it.
     
  7. SoyCapitanSoyCapitan macrumors 68040

    SoyCapitanSoyCapitan

    Joined:
    Jul 4, 2015
    #7
    That's very inefficient. My Skylake PC with dual GTX 1070 pulls 350w when doing heavy compute tasks.
     
  8. tomvos macrumors 6502

    tomvos

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    Jul 7, 2005
    Location:
    In the Nexus.
    #8
    Keep in mind that many consumer level load testers are quite inaccurate. Most devices are OK as long as the main consumer inside your equipment are resistors turning electricity into heat (like light bulbs, heaters, hair dryers etc.). However a simple watt meter might show you values way of when measuring a device containing lots of capacitors and coils (like your computer).
     
  9. thornslack macrumors regular

    Joined:
    Nov 16, 2013
    #9
    Additionally any device plugged into an outlet saps power regardless of whether it is on or not.
     
  10. AidenShaw macrumors P6

    AidenShaw

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    Location:
    The Peninsula
    #10
    One reason I like computer power supplies that have a rocker switch.
     
  11. omvs macrumors 6502

    Joined:
    May 15, 2011
    #11
    The cMP has a power supply that can handle up to 980 watts, and dates back almost a decade. Not really fair to compare against a much newer, lower wattage supply. Back then apple didn't seem to be sweating power consumption as much, and clearly they just wanted something that could handle whatever load people threw at it, since its not like you can just swap in a pc supply.

    12watts off does seem a bit high, but probably the standby circuitry isn't really efficient. But remember off isn't really off - some parts (like ethernet for WOL) are still drawing power.
     
  12. AidenShaw macrumors P6

    AidenShaw

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    #12
    The current standard to get "Energy Star" certification is ½ watt in standby mode.
     
  13. Prince134 macrumors 6502

    Joined:
    Aug 17, 2010
    #13
    To me, all you guys numbers seemed not correct.

    My 6 core 3.4Ghz cMP 5.1 with 2x 1080 ti consumed 0.0 watt when power off. In sleep mode, 5.5Watt. Idle with safari open doing nothing, it only consumes 120W.
     
  14. ActionableMango macrumors 604

    ActionableMango

    Joined:
    Sep 21, 2010
    #14
    Your numbers are about the same as mine for a 4,1 and a 5,1, but OP has a 2,1 which is much older.
     
  15. Darmok N Jalad macrumors member

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    Sep 26, 2017
    Location:
    Tanagra
    #15
    I've been wrestling with this one myself. I have a 4,1 single CPU, but I replaced the older 130W 4C Xeon (45nm) with a 95W 6C model (32nm). I also put in an AMD 7870, which was one of the first high-end GPUs that offered very low idle energy consumption. I'm guessing I'm pulling maybe 120W idle, and I rarely load it down--the GPU is mostly to accelerate Lightroom, and the Xeon was just a steal at $35 and it helps with my occasional video encoding.

    I've tried to figure out what it costs me to run this machine each year, and I think the difference between running it and a brand new model is a matter of dollars per year. While a new machine is more energy efficient, this old machine's manufacturing cost to both me and the environment has mostly been spent--a new machine is a much bigger expense to both! All that of course depends on your usage and demand, but my 2009 is way more than enough for me still.
     
  16. NY Guitarist macrumors 65816

    NY Guitarist

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    Mar 21, 2011
    #16
    They make great space heaters! ;)
     
  17. z970mp macrumors 6502

    z970mp

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    Jun 2, 2017
    Location:
    Good Ol' US Of A
    #17
    Aside from perhaps the CPU, I can confirm the Mac Pro 2008 runs hotter than my Late 2005 Power Mac G5.

    The exhaust is damn near scalding sometimes.
     
  18. William Payne macrumors 6502a

    Joined:
    Jan 10, 2017
    Location:
    Wanganui, New Zealand.
    #18
    They may be power pigs but I don't notice it on the power bill. I use mine all the time and live alone so only power usage is my lights and whatever I'm using which is generally the computers in my "office".

    My power bill last month was less then $70 New Zealand Dollars which is around $48 USD.

    My toaster draws more watts then my Mac Pro.
     
  19. z970mp macrumors 6502

    z970mp

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    #19
    What model do you have?
     
  20. William Payne macrumors 6502a

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    Jan 10, 2017
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    Wanganui, New Zealand.
    #20
    Single cpu 4,1 flashed to 5,1
     
  21. z970mp macrumors 6502

    z970mp

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    #21
    That's one of the least power hungry tower Mac Pros. I'd like to see your power bill with a dual processor MP 1,1.

    You know, I have a question. Why are the old Mac Pros called 'cylinder' when they look nothing like a cylinder? The 2013 Mac Pro should be called 'cylinder', and the pre-2012 Mac Pros should be called 'aluminum'. First there was the aMP, then the cMP. Next will be the mMP.
     
  22. William Payne macrumors 6502a

    Joined:
    Jan 10, 2017
    Location:
    Wanganui, New Zealand.
    #22
    You should see the power spikes on my usage graph when I use my drier for laundry haha.

    As for cylinder, who calls that model a cylinder? I thought only the trash can was a cylinder.

    The c in cMP stands for classic.
     
  23. z970mp macrumors 6502

    z970mp

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    Jun 2, 2017
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    Good Ol' US Of A
    #23
    Me too, but everyone I've seen refers to it as a cylinder.
     

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