PSU efficiency bench results

Discussion in 'Overclocking & Hardware' started by Thrawn, Nov 16, 2012.

  1. Thrawn

    Thrawn Member

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    https://docs.google.com/spreadsheet/ccc?key=0AmSWTZmbKkVhdFFyM3RhUWphY2Nlc3F0dEhtZ3pZR1E#gid=0

    I've been benching a lot of PSUs that I have acquired lately (much more than I actually need, lol). I'm about half way through testing them and I thought the results may be interesting to others.

    No major surprises really, efficiency more or less as expected with older and lower 80+ rated PSUs not performing as well. Also, the 'sweet spot' of the PSU makes a considerable difference to the efficiency so it doesn't make sense to seriously overpower a rig at all.

    Also shows how much PSU technology has improved throughout the years (or at least maybe the older PSU has degraded). Eg, the very popular 80+ HX-520 which used to cost like $150 is like 6% less efficient at Windows idle load than a modern $80 Antec HCG 520 Bronze.
     
  2. orby

    orby Member

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    Good to know, thanks for all the testing!

    When do you expect to complete this experiment?
     
  3. Forgiven

    Forgiven Member

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    Great work mate.. Will love to see the end results..
    Are you going to test any platinum ones?
     
  4. OP
    OP
    Thrawn

    Thrawn Member

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    Probably in the next couple of weeks. If you have any requests of any PSU on the list I can priotize it.

    I'm also building a Quad SLI GTX 480 X79 rig to stress out the 1000w+ PSUs properly

    I don't have any Platinum PSUs at the moment... I bought pretty much all the PSUs secondhand.. so I probably won't come across any decently priced Platinums any time soon.
     
  5. jebusv20

    jebusv20 Member

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    if you would be interested I am happy to bring over some gear to add to some data points, have some coolermaster 600ish watt PSUs, an older HX1000 a silverstone ST1500W and a CM1250W Pro
     
  6. OP
    OP
    Thrawn

    Thrawn Member

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    Thats an option. I want to go through my list first though.
     
  7. T-O-D

    T-O-D Member

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    good to know my recent purchase (AX-750) is noticeably more efficient so far!

    No wonder it seems quieter (less heat loss) :thumbup:

    Thanks for the real-world comparison! Awesome work!
     
  8. BurningFeetMan

    BurningFeetMan Member

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    I'm cleaning out the server room here at work, are you interested in a box of misc PSU's, both server & desktop?
     
  9. edzknows

    edzknows Member

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    I like these sorts of tests, very interesting.

    The small system is very similar to mine.

    Using my pico and xbox psu i get about 42 idle and 58 at cpu load. (no gfx card)
     
  10. OP
    OP
    Thrawn

    Thrawn Member

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    Depends what they are.. if they're really obscure stuff that you can't typically get easily then there's no point testing 5 different types.

    I wouldn't mind getting a sample of a typical HP desktop PSU or something like that too. And lots of them would probably not be ATX compatible anyway.
     
  11. DriftMagister

    DriftMagister Member

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    Ah was just gonna say I have a Hp comp (under 2 yrs old) that I took apart. So psu is spare. But it was for a m-atx
     
  12. OP
    OP
    Thrawn

    Thrawn Member

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    MicroATX still uses the same ATX plug. I don't believe the brandnames customizes desktop PSU standard any more.. but it has been years so I'm not sure.

    Anyway, if you're not in Brisbane its not worth shipping PSUs back and forth as they're pretty expensive.
     
  13. DriftMagister

    DriftMagister Member

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    I'm in Brisbane :) let me know if you're keen il get specific model number/details
     

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