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Seasonic G Series 550 W

Discussion in 'Reviews' started by crmaris, Sep 21, 2012.

  1. crmaris

    crmaris Reviewer

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    Last edited by a moderator: Oct 4, 2012
    adulaamin, heky and NHKS say thanks.
  2. LTUGamer

    LTUGamer

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    Looks very nice :) Much better than FSP Aurum CM 550W :D
  3. eidairaman1

    eidairaman1

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    Seasonic, Antec, Enermax, Corsair, PC Power and Cooling, Thermaltake are the ones id go with anymore
  4. Dj-ElectriC

    Dj-ElectriC

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    I kinda can get 80$, but 100$ is too damn expensive
  5. Frick

    Frick Fishfaced Nincompoop

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    Not for a gold rated modular unit. Here it's actually one of the cheaper ones in that category.
  6. Dj-ElectriC

    Dj-ElectriC

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  7. Frick

    Frick Fishfaced Nincompoop

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    I'd take that one too, but the 650W unit. But that is us. :)
  8. unholythree

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    I'd love to pick one up on sale some time, the hold up time worries me though. Will it play nice with a consumer UPS? They already seem to have trouble enough with Active PFC power supplys.
  9. crmaris

    crmaris Reviewer

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    no need to worry about the hold up time of this one, especially if you have a UPS.
  10. Frogger

    Frogger

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    The PSU reviews here have reach the piont that is time to :slap: jonnyguru to the curb
    :toast: crmaris GREAT work have fun with the new hardware :)
  11. Wile E

    Wile E Power User

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    Sweet review. I'm so glad somebody other than JonnyGuru is finally doing proper psu testing.

    Great job.
  12. Jambe

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    So does the fan constantly spin then, or only at 40W? How's the character of the fan's sound?
  13. Frick

    Frick Fishfaced Nincompoop

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    crmaris have always done that imo.
    scaminatrix says thanks.
  14. crmaris

    crmaris Reviewer

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    The fan constantly spins even at low loads. Its noise isn't high but this is just my opinion, since db measurements and even more personal opinions cannot describe the fan's noise.
  15. Ghost

    Ghost

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    A recording could.

    :wink: :wink: :clue: :wave:
  16. Frick

    Frick Fishfaced Nincompoop

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    I'm sure the equipment used to test PSU's are pretty loud in themselves.
  17. Jambe

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    I see. Would you say this unit could run without the fan at low power? If so, then the PWM setup for the G-Series units is just artificially made worse than the X-Series for marketing purposes, yeah?

    I think the fan behavior of the X-560 would be worth the extra $25 to me (current Newegg pricing) if I was building a quiet-oriented computer (which is pretty much the only kind I assemble anymore).
  18. crmaris

    crmaris Reviewer

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    probably since it is a Gold unit but I am not 100% sure of it. At low RPMs the fan is inaudible especially inside a chassis, so apparently SS thought that a semi-fanless mode wasn't required.
  19. extrasalty

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    Great review- all we need now is a "hot box" for testing. Either way- TPU is gonna make johnyguru jealous.
  20. ozyris New Member

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    Great review indeed :)

    I'd like to confirm, whether this PSU isolates the inrush-current-limiting thermistor, once it has done it's job? Or is that thermistor only effective in a cold start scenario? You usually mention there is a relay for that purpose, but not this time...

    Also, I feel it's rather strange, that part of the fan is not covered from the inside to improve airflow. Intuitively, it seems to make much sense to cover part of the fan.. what do you think about that?
  21. crmaris

    crmaris Reviewer

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    Indeed I don't remember a relay in this one, else I would mention it. But most times a diode is used instead of a relay, to isolate this thermistor. And most likely this PSU has a similar diode.

    As for the fan shroud and more specific its absence. Most likely Seasonic didn't bother with it since the unit has minimal energy dissipation thanks to its high efficiency. Also a fan shroud usually increases noise so some manufacturers avoid it when they can.

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