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Thread: Let’s discuss about the quality of Seasonic S12 PSUs again.

  1. #11
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    Quote Originally Posted by Al3xand3r View Post
    Thats being said, if you wish to measure the voltages across all rails you should take a look at the link below for seeing where you need to put the probes.
    http://www.smpspowersupply.com/connectors-pinouts.html
    I just looked 15 pin SATA power connector. Pins are smaller than my probes. My DMM probe will touch 2 of them at the same time. Probably won't cause any trouble. First probe touch the first two 3.3V pin and second probe will touch 2 gnd pin.

    Quote Originally Posted by Variable View Post
    The S12II biggest problem is that it is unrefined compared to modern designs. Most of its issues are superficial: loud fan, coil whine and PFC circuit clicking.
    I don't have these problems.

  2. #12
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    Quote Originally Posted by Variable View Post
    It won't explode, take out components, nor produce out-of-spec voltages.
    It will, if you load it 'correctly'.
    That is the problem with all group regulated units
    Nothing can be done about that.


    Quote Originally Posted by Variable View Post
    The S12II biggest problem is that it is unrefined compared to modern designs. Most of its issues are superficial: loud fan, coil whine and PFC circuit clicking.
    Its almost 10 years old and came out in 2010.
    And you see that it is lacking in some areas...


    Quote Originally Posted by Variable View Post
    If you can live with those problems, then you'll be fine with its performance.
    Well, that can be said with many other units I wouldn't want...
    Quote Originally Posted by Overclocked View Post
    Stefan hates S12, I know.
    No, I don't. I always say that the 750W+ (was there a 650W version with DC-DC as well??) S12II/M12II are fine. As was the original and S12D.

    What I hate is group regulated units. But that was also the case back in 2010...
    Haven't changed my mind since then and never will...


    Quote Originally Posted by Overclocked View Post
    I heard the capacitor rumours about the circuits. Even there is a website about it. (BadCaps) They wrote a lot of horror stories about Chinese and Taiwanese brand capacitors. So I though I must buy a PSU with Japanese caps.
    Didn't help this unit much...

    I knew of this Review but had to take a while to find it...
    Would be great if there were more sorting options...


    Quote Originally Posted by Overclocked View Post
    It has japan caps, Seasonic is reliable company etc. He said.
    Like other PSUs, I also searched for a review about Seasonic one. I found some reviews on the web and on Youtube.
    1. there are only a hand full of people who really know stuff about PSU. And most of them are in this forum as well or were at one point.
    2. Going by company is just stupid.
    Every company has good stuff, every company has rather bad stuff.

    It all depends on what you want, what you are willing to pay and such.

    And depending on the situation, there are other options/companies you can choose from.

    For example, here in Germany, if you want cheap, you can get Xilence Perofrmance A+ or the Performance X.
    Both are astonishingly quiet under lower load...

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    @ Overclocked,

    The Intel PSU Design Guide states +/- 5% on the rails.

    The measurements taken by the MB also has a reading tolerance and can be a few % off. If you want, you can send the PSU to us and we will put it on a Chroma with a simulated load based on Intel parameters and let you know the results.

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    It got DBB/FDB fan, it changed.
    Should last more than sleeve like in the most cheap units.

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    Quote Originally Posted by Overclocked View Post
    2) ± 5 % tolerance is acceptable for ATX standards. So, I don’t have a problem with 5V and 12V rails. But when it comes to 3.3V, I have a concern. Here look at this:


    So, which components use 3.3V rail? When I play heavy games, it shows 3.424 V
    When idle or light usage, it fluctuates between 3.44V and 3.456V. These values are too close to 3.465V (3.3V + %5 tolerance -->3.465V upper limit.) Am I safe now?
    (I know I can’t trust BIOS or software values. I’ll measure with the DMM from SATA connector which has all 3 rails on its pinout. (3.3V , 5V and 12V) ) (
    Finally I measured with multimeter.
    Software shows 3.440v - 3.456v for idle mode and 3.424 V- 3.440V for full load.
    But my multimeter shows 3.39V - 3.40V for both situation. So, no problem with 3.3V.
    Nice for me.

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    I just looked 15 pin SATA power connector. Pins are smaller than my probes. My DMM probe will touch 2 of them at the same time. Probably won't cause any trouble. First probe touch the first two 3.3V pin and second probe will touch 2 gnd pin.
    This was not the purpose of the link sent to measure the voltage at the SATA connector but at the 24pin connector.
    Finally I measured with multimeter.
    Software shows 3.440v - 3.456v for idle mode and 3.424 V- 3.440V for full load.
    But my multimeter shows 3.39V - 3.40V for both situation. So, no problem with 3.3V.
    Nice for me.
    Nice. Now you see what's the accuracy of the software readings.

    If you encounter weird reboots/bluescreens and shutdowns with your computer please let us know.

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    Quote Originally Posted by Al3xand3r View Post
    This was not the purpose of the link sent to measure the voltage at the SATA connector but at the 24pin connector.

    Nice. Now you see what's the accuracy of the software readings.

    If you encounter weird reboots/bluescreens and shutdowns with your computer please let us know.
    I read 3.3V via multimeter from sata power connector. S12 is a single rail PSU. So, measuring 3.3v from sata or 24 pin connector don't make any difference right?
    No problems like bsod etc. Pc is fine.

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    I read 3.3V via multimeter from sata power connector. S12 is a single rail PSU. So, measuring 3.3v from sata or 24 pin connector don't make any difference right?
    No problems like bsod etc. Pc is fine.
    Single or multi rail is just on the 12V rail not on the minor ones. So no, there's no difference, but is really hard to put that probes on the SATA connector whitout make a shortcircuit.

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    Quote Originally Posted by Al3xand3r View Post
    Single or multi rail is just on the 12V rail not on the minor ones. So no, there's no difference, but is really hard to put that probes on the SATA connector whitout make a shortcircuit.
    Yes, I forgot it for a moment. 3.3V is same at everywhere.
    I measured my both old and new PC today.
    Old Pc turned off itself. Probably I made a short circuit with 1 probe.
    But I measured easily with a new one. I touched the wire conections from behind of the sata power connector instead of 15 pins.

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    There is not much to discuss honestly, it is a mediocre PSU which does not deserve to be ever mentioned again.

  11. The Following 2 Users Say Thank You to CrapXon For This Useful Post:

    rafal_iB_PL (12-20-2017), Stefan Payne (12-20-2017)

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