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Thread: Do high quality PSUs really worth it ?

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    Default Do high quality PSUs really worth it ?

    Hello. I'm new here.
    When you surfing on the web, you can definitely see the comments like "Japanese capacitors are great. Don't buy a product which doesn't have japanese ones." etc.
    Also, some people built a website for capacitors. (Badcaps, OMG. )

    I have an old computer which is retired right now.
    It has very low-end PSU. (Bestec ATX-300-12Z)
    People tagged a nickname like : "Worstec" for the brand.
    Also that unit doesn't have any kind of protection features such as OCP, OPP, UVP, OVP, SCP etc. afair.
    It isn't efficient. (Below %80)
    It has full of Capxon and Jamicon capacitors.
    The cooler brand is Jamican afair.
    Probably it has old design (group regulation).
    Although it has very bad specs, it worked flawlessly for 10 years.
    And.. it is still working right now without a problem. (3.3 , 5 and 12V rails are meet ATX specs. %5 tolerance)

    My monitor also has under the counter capacitors (Elite) but worked for 10 years. (I'm still using it)
    The old mobo also has bad caps. (Teapo) but working without a problem.
    There is no capacitor exploded, no sign of leakage or swelling.

    Am I too lucky or... ??

    My new PSU is Seasonic S12ii. It isn't high end again. Meh...
    Last edited by Overclocked; 11-26-2017 at 05:23 PM.

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    You can also have a house without any electrical safety measures and a 30-year old installation.

    It could work perfectly.

    But it could also burn your house or kill you

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    Quote Originally Posted by breixobaloca View Post
    You can also have a house without any electrical safety measures and a 30-year old installation.

    It could work perfectly.

    But it could also burn your house or kill you
    Yes, our apartment is nearly 20 years old and doesn't have ground line in the rooms. It only has grounding line in the wet floors such as kitchen, bath and the toilets.

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    That Bestec wasn't actually terrible if I remember correctly, the one with horrendous +5VSB was ending with E and not Z.

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    Quote Originally Posted by Overclocked View Post
    "Japanese capacitors are great. Don't buy a product which doesn't have japanese ones." etc.
    That's just total bullshit.

    first: a crappy PSU with "Wapanese" (=slang for Wannabe Japanese because if PSU is made in China so are most certainly the caps as well) is still a crappy PSU.

    Second: It depends on the Design!
    If your design is bad, you _NEED_ good quality capacitors for it to last for a bit.
    If the design is good, it will last as long with low quaity capactors.

    So without knowing anything about the normal operational enviroment of the capacitor, it is impossible to say anything about the caps as well.


    There seem to be some cases with PSU made by reputable manufacturers that have those legendary "japanese capacitors" but when they fail, it sounds highly like bad capacitor defects.

    Quote Originally Posted by Overclocked View Post
    People tagged a nickname like : "Worstec" for the brand.
    Most people know shit about PSU and just tell fairy tales...

    Like Peak Efficiency at 50% (in truth it's somewhere between 30-70%, in 230VAC it is even worse.)
    You must not load the PSU at 100% (there are manufacturers that advertize 100% load 24/7)
    The PSU will loose capacity when it gets older (haven't found any evidence for it. Though Ripple and Noise will get worse)


    Quote Originally Posted by Overclocked View Post
    My monitor also has under the counter capacitors (Elite) but worked for 10 years. (I'm still using it)
    The old mobo also has bad caps. (Teapo) but working without a problem.
    There is no capacitor exploded, no sign of leakage or swelling.
    There goes the fairy tale of 'you need japanese capacitors' for it to last...
    It depends on the series, load conditions and so on.

    Quote Originally Posted by Overclocked View Post
    My new PSU is Seasonic S12ii. It isn't high end again. Meh...
    Your "new" PSU is old shit, there are way better units on the market for the same price.
    I don't understand why some manufacturers are regarded that highly, even if they just do a somewhat basic unit with group regulation where everyone else is switching to DC-DC...

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    Quote Originally Posted by Stefan Payne View Post
    Your "new" PSU is old shit, there are way better units on the market for the same price.
    I don't understand why some manufacturers are regarded that highly, even if they just do a somewhat basic unit with group regulation where everyone else is switching to DC-DC...
    Meh, it was just on Newegg for 22.99USD after rebate, so perhaps OP didn't pay too much for it. I agree with everything else you said, though, wholeheartedly.

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    Quote Originally Posted by Overclocked View Post
    My monitor also has under the counter capacitors (Elite) but worked for 10 years. (I'm still using it)
    Ironically, Elite has one of the best capacitor factories and produce some of the best caps in the world. But because some EE's use incorrect caps for their application and they're not made in Japan, they get a bad rap.

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    Quote Originally Posted by Overclocked View Post
    ... Am I too lucky or... ?? ...
    Some individuals have been known to cross minefields on bare foot and emerging unscathed. Some of those may even have concluded that minefields are safe to cross on bare foot.

    However no sober professional minesweeper will ever tell you that minefields are safe to cross on bare foot.

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    Quote Originally Posted by Stefan Payne View Post
    Your "new" PSU is old shit, there are way better units on the market for the same price.
    I don't understand why some manufacturers are regarded that highly, even if they just do a somewhat basic unit with group regulation where everyone else is switching to DC-DC...
    Okay, my PSU is an entry level but not sh**ty too much I think.
    The only big problem is old group regulation design but if I don't do cross loading or using it with max. limit power, then no problem. At least it is 80+, has japan. caps, some protection features, enough power for my PC, low ripple voltage, doesn't go out of spec generally... etc.

    I don't know if protection IC has latency problem or not.

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    Quote Originally Posted by Overclocked View Post
    I don't know if protection IC has latency problem or not.
    Would be good if we were talking about latency problem...

    Many important things are just not there with those 8pin protection chips...
    And the HY-510N Seasonic seems to like using its worse.


    No UVP (undervoltage protection) for +12V either. Overcurrent for no rail, just over power (in the Primary side implemented) and UVP on +5V and +3,3V with redicolously low values like 3,5V for +5V and 2.2V for 3,3V.

    If you have a short on +3V3 or +5V and the voltage doesn't drop to that level, there is nothing to shut the PSU down at all!
    That's kinda the problem...

    And overtemperature also isn't there...


    Quote Originally Posted by Overclocked View Post
    but if I don't do cross loading or using it with max. limit power, then no problem.
    You kinda do that by default.
    Because if you don't have an LGA1366 (where the CPU uncore was generated out of the 3,3V rail for whatever reason) you have all load on +12V and if you're lucky 2.5A on each minor rail.
    If not 1A or even less. (according to COrsair HX750i and HWInfo64)



    Quote Originally Posted by Overclocked View Post
    At least it is 80+, has japan. caps,
    That doesn't really matter...
    And japanese caps are overrated.
    You have to know the design of a unit to know if they are the weakpoint or not. If they make sense or are needed or not.
    WIth modern PSU there are many more failure modes. And the rest should be there before we talk about caps...
    In recent years the FETs are one thing but also it seems like the +5VSB chip can explode for no reason...

    The probelem is that if they would have used their usual OST/Teapo Mix but a WT7527V or something like that, it would have been a way better unit than with Japanese caps (MADE IN CHINA!!!11) and a shitty 8pin chip that can't do nothing...

    Sadly people want rather some useless things that don't give them anything than the things that make sense. Like all (working) protection...
    Quote Originally Posted by Overclocked View Post
    some protection features,
    but not what you really want/need if something goes horribly wrong...

    Quote Originally Posted by Overclocked View Post
    enough power for my PC, low ripple voltage, doesn't go out of spec generally... etc.
    Does that really matter if protections aren't there??
    And every group regulated unit can be forced out of spec with a bit of load....
    Last edited by Stefan Payne; 11-27-2017 at 04:37 PM.

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