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Thread: Review: Seasonic X-Series 850 W Power Supply

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    Default Review: Seasonic X-Series 850 W Power Supply

    Hardware Secrets just posted a review of Seasonics 850w 80plus Gold unit from the newer X-Series. It's modular, features a single +12V rail @ 70A, with 25A on each of the minor rails. The ripple test results are truly drool-worthy. Check it out:

    http://www.hardwaresecrets.com/artic...-Review/1169/1
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    AX850 FTW - same thing, but most cables flat and longer warranty.

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    Torres's review is great and very informative, as always.

    The reviewer jackop at itocp told me that the highest ripple of the X-650 he tested appeared at around 30% load instead of full load. He also presented two oscilloscope screenshots. One was taken at 30% load and the other's at full load. Please see the attachments.

    I wonder, could the rest units of the X-series be the same case with the X-650 jackop tested?
    Last edited by duckula; 01-14-2011 at 12:19 AM.
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    Quote Originally Posted by duckula View Post
    Torres's review is great and very informative, as always.

    The reviewer jackop at itocp told me that the highest ripple of the X-650 he tested appeared at around 30% load instead of full load. He also presented two oscilloscope screenshots. One was taken at 30% load and the other's at full load. Please see the attachments.

    I wonder, could the rest units of the X-series be the same case with the X-650 jackop tested?
    It's because CM6901 operates in a low frequency PWM-mode below a certain load level. The threshold might be determined by the designer.
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    I made a little comparison between the components used in Corsair AX850 and Seasonic X-850 referring to HWS's reviews.

    They are almost the same except for the mosfets used in the APFC circut and switching section.
    Last edited by duckula; 01-14-2011 at 10:51 AM.
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    looks good!

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    Quote Originally Posted by Travis View Post
    It's because CM6901 operates in a low frequency PWM-mode below a certain load level. The threshold might be determined by the designer.
    Seems Paul at Hardocp was in the same situation as jackop was.

    Typically the ripple/noise values of a unit increase with load, but that was not the case with the X-750's 12v rail. No, this unit actually started out at its highest value of 35mV and then dropped to ~10mV as it was more heavily loaded. This is, as we said above, a rather interesting result and appears to indicate that the X-750 is just a masochist at heart.
    Police arrest two kids. One was drinking battery acid, the other was eating fireworks. They charged one and let the other one off.

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