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Thread: Preview: Seasonic S12G 550 W (SSR-550RT) @Hardwareinsights

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    Default Preview: Seasonic S12G 550 W (SSR-550RT) @Hardwareinsights

    CPU:Athlon 64 FX60 (2-cores) 2,6GHz
    Mobo:Asrock 939a785g
    cpu cooler:ArcticFreezer13 CO
    RAM:4 GB DDR 400MHz
    GPU:Asus 750 Ti 2GB
    PSU:Seasonic Platinum 660
    Monitor:Asus VE228HR
    Tower:Coolermaster Elite 430

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    ^
    Being a single rail DC-DC converted unit, OCP and OPP are exactly the same thing, since nearly all of the power comes from the same rail.

    With that said, however, the S12G based PSUs I've tested have all had the OPP/OCP configured correctly and shut down gracefully when overloaded.
    No wonder it doesn't work! You installed the coils backwards

    Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium.

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    S12G is dual 12V rail, I'd say. I spotted two separated rails on the pcb and the ic also suports two +12V rails. The Antec version is officially dual rail.

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    ^
    The label on this one says otherwise. The platform does support dual rails, but they are usually joined on the S12G and G-series retail units.
    No wonder it doesn't work! You installed the coils backwards

    Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium.

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    No they are not.
    They are truly seperated with a PS223 protection IC.
    On an original Seasonic G-Series, the PCIe connectors are connected to both rails.

    There are also two coils, one for each +12V rail and there is no bridge present.

    So they are true dual rail, although the label stated otherwise...

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    OCP for +12 V functioned properly each time. And yes, you are correrct, there are two +12V rails.

    OPP did not kick in and the units (so far G-550 and Antec TP-550C) were burning with SBR10U45 rectifiers shorting. I have sucessfully repaired this using STPS15L60CB instead, than the TP-550C turned off under several overloading conditions. I will maybe write a short article abotu that, or maybe not, will see.
    Last edited by Behemot; 04-13-2015 at 05:43 AM.

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    The full review has just came out http://www.hardwareinsights.com/wp/s...ty-components/

    As expected - it BURNED!

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    Quote Originally Posted by Behemot View Post
    The full review has just came out http://www.hardwareinsights.com/wp/s...ty-components/

    As expected - it BURNED!
    Haven't fully read the review, but from a first look it looks very very promising
    It is very analytic with many details.
    So, first impressions : IMPRESSED

    P.S @Behemot, can you explain your conclusive scoring methodology? this unit scored only 18% It's not an L'Tec unit but a Seasonic one!! 18% means that this PSU is total junk !! Maybe you are a little too strict ? !!
    CPU:Athlon 64 FX60 (2-cores) 2,6GHz
    Mobo:Asrock 939a785g
    cpu cooler:ArcticFreezer13 CO
    RAM:4 GB DDR 400MHz
    GPU:Asus 750 Ti 2GB
    PSU:Seasonic Platinum 660
    Monitor:Asus VE228HR
    Tower:Coolermaster Elite 430

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    There's a link to evaluation methodology by the beginning of this chapter. According to it you can not compare L'Tec to Seasonic at all as that is different market segment. High-end can only be compared to another high-end, and there, it has quite bad ripple suppresion and voltage regulation, plus non-working OCP and it burned - only here it lost like 40 points. Good unit like Silverstone SFX 450 W reviewed back on DiiT had 72 % and silver prize.

    In close future I am thinking about removing the price from the evaluation (there will be another thing measured insted of the price actually) and (perhaps voluntarily) bringing a performance-for-price ratio which than would not be fixed on the price.

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