Page 1 of 5 123 ... LastLast
Results 1 to 10 of 49

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

  1. #1
    Join Date
    Nov 2017
    Location
    Somewhere in the world...
    Posts
    51
    Thanks Thanks Given 
    6
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

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

    TL;DR --> Just go to the questions please if you don’t have time for reading the whole text.

    I built a new rig with completely new components 7-8 months ago.
    I’m a person with an investigative personality. But I have overlooked when it came to the PSU unfortunately. Here is my story:
    I didn’t know much about PSUs before. The only thing I knew, there are some bad PSUs which have much less power than the given wattage info on the label. Also some PSUs known as motherboard fryer. Ouch…
    After some time, I developed my knowledge about them. “PSU should have protection features, 80+ efficiency, silent operation, enough power, enough connectors,” bla bla bla.
    When it comes to PSU choice, I looked the reviews from Youtube, Tom’s Hardware, some other sites and JonnyGURU. There are too many PSUs on sale and I didn’t know what are the real differences between them.
    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.
    I didn’t want to pay a fortune for a PSU. FSP Hydro G, Seasonic Prime etc. models were expensive. So I need to find one with high price/ performance ratio. I looked a lot of cheap PSUs but couldn’t find a proper one. After then, I asked about cheap and high quality PSU. One dude adviced me the Seasonic S12ii 620W on the one of the forums. 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.
    General satisfaction with this PSU --> okay
    Youtube reviews --> okay
    Japan caps --> okay
    Other features (protection, 80+, silence) --> okay
    Tom’s Hardware tier list --> okay
    Reviews, looking inside, components --> okay
    Lastly, some people adviced this website. (JonnyGURU).
    So, JonnyGURU review result --> excellent.
    And… I bought Seasonic S12.
    After 6-7 months, I saw an advice on Seasonic website. “Don’t connect single cable with two 8 pin connector to VGA card which needs two 8 pin connection.”
    So, I started research about the problem. But this is another story. When searching for it, I learned my trustworthy PSU is a garbage on JonnyGURU website. Because it has group regulated design which can cause problems and the protection IC can’t cover the system from going out of ATX specs. Its thresholds are too low or too high.

    Here are the reviews about S12:
    http://www.jonnyguru.com/modules.php...Story&reid=185
    http://www.hardwaresecrets.com/seaso...ply-review/10/
    https://en.gecid.com/power/seasonic_...gb_2015/?s=all

    (I didn't read the last one.)

    Here is my questions:
    1) Can you update the review about Seasonic S12 ?. The review didn’t told us about how bad the protection IC features compared to ATX standards.

    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) )

    I used Bestec atx 300 12z before. That PSU is also bad one. I used it for 10 years with absolutely no problem. Probably I was too lucky.
    Last edited by Overclocked; 12-21-2017 at 06:02 AM.

  2. #2
    Join Date
    Nov 2017
    Location
    Somewhere in the world...
    Posts
    51
    Thanks Thanks Given 
    6
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    The Mosfets of my motherboard are also open to discussion. Niko Mosfets oh.
    Hopefully I didn't need overclocking right now. And games generally doesn't use CPU above %50. So this mobo shouldn't create a problem with 1.35V - 3.8 Ghz OCed Ryzen 1600 CPU. When I need rendering I can go back to stock voltage and frequency. I didn't want to buy aftermarket CPU cooler. Stock cooler should do the trick for my usage.
    Last edited by Overclocked; 12-21-2018 at 07:57 PM.

  3. #3
    Join Date
    Mar 2016
    Location
    Spain
    Posts
    698
    Thanks Thanks Given 
    476
    Thanks Thanks Received 
    7
    Thanked in
    6 Posts

    Default

    Almost no Protection IC these days has a good OVP/UVP trigger point. The vast majority of them have terrible thresholds. I don't think your unit is garbage. I think your unit is not competitive in the market and not the best purchase option.

    Computer Power Supplies are a rather weird area of interest, in my opinion. So, being this forum where a big part of the experts converge, I think it's normal to be exigent and dig deep into the quality of a Power Supply. And, being a forum where there are some representatives of the brands, like @Seasonic Rep, it's normal too that they try to defend their products against criticism. And in the end, we have an interesting debate, maybe too forced sometimes, but after all, there is a good exchange of knowledge.

    It's necessary to avoid getting the debate out of context. Your PSU will not blow up and burn your house. Your PSU is backed by a 5-year warranty and isn't terrible. Now, you will see Stefan telling you its flaws and Seasonic Rep telling what's good about your S12II. It's a good opportunity to learn from them, maybe even to reconsider if you should recommend S12II to friends or people in forums, but not to worry about anything!

    And, about the Voltage readings, check that http://www.jonnyguru.com/forums/showthread.php?t=12485 Yes Jon, good idea to stick something about software voltage readings.
    Last edited by breixobaloca; 12-19-2017 at 05:32 PM. Reason: confused OCP with UVP :P

  4. The Following 2 Users Say Thank You to breixobaloca For This Useful Post:

    frewster (12-19-2017), turkey3_scratch (12-19-2017)

  5. #4
    Join Date
    Nov 2015
    Location
    Germany
    Posts
    694
    Thanks Thanks Given 
    31
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    Nothing wrong with those units as long as you get them dirt cheap.

    Because...you cannot get dirt cheap stuff as reliable as those, despite being so old!

    Would i recommend them? generally speaking, no. But if you really dont have the money to spend and are going to buy dangerous crap...you´ll be better off with S12 variants.

  6. #5
    Join Date
    Nov 2017
    Location
    Somewhere in the world...
    Posts
    51
    Thanks Thanks Given 
    6
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    Quote Originally Posted by breixobaloca View Post
    Almost no Protection IC these days has a good OVP/UVP trigger point. The vast majority of them have terrible thresholds. I don't think your unit is garbage. I think your unit is not competitive in the market and not the best purchase option.

    Computer Power Supplies are a rather weird area of interest, in my opinion. So, being this forum where a big part of the experts converge, I think it's normal to be exigent and dig deep into the quality of a Power Supply. And, being a forum where there are some representatives of the brands, like @Seasonic Rep, it's normal too that they try to defend their products against criticism. And in the end, we have an interesting debate, maybe too forced sometimes, but after all, there is a good exchange of knowledge.

    It's necessary to avoid getting the debate out of context. Your PSU will not blow up and burn your house. Your PSU is backed by a 5-year warranty and isn't terrible. Now, you will see Stefan telling you its flaws and Seasonic Rep telling what's good about your S12II. It's a good opportunity to learn from them, maybe even to reconsider if you should recommend S12II to friends or people in forums, but not to worry about anything!

    And, about the Voltage readings, check that http://www.jonnyguru.com/forums/showthread.php?t=12485 Yes Jon, good idea to stick something about software voltage readings.
    Stefan hates S12, I know.

    Seems like software reading results are lower than DMM measurement results, which gives me concern about 3.456V software reading. I hope I will not end with a very high 3.3V output result when I measure with DMM.

  7. #6
    Join Date
    Mar 2016
    Location
    Spain
    Posts
    698
    Thanks Thanks Given 
    476
    Thanks Thanks Received 
    7
    Thanked in
    6 Posts

    Default

    Quote Originally Posted by Overclocked View Post
    Stefan hates S12, I know.

    Seems like software reading results are lower than DMM measurement results, which gives me concern about 3.456V software reading. I hope I will not end with a very high 3.3V output result when I measure with DMM.
    Not always

    I just measured 5V, as it's quite easy. My DMM says "5.05V" and my motherboard "5.08V"

  8. #7
    Join Date
    Aug 2010
    Posts
    2,700
    Thanks Thanks Given 
    116
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    Since you already have it, I wouldn't worry, until you have actual issues that might be PSU related.

    Doesn't mean this is my go-to recomendation, unless price is right (aka rather low).

    Note though:

    It has japan caps, Seasonic is reliable company etc. He said.
    These are rather frail, if any, arguments.

  9. The Following User Says Thank You to rafal_iB_PL For This Useful Post:

    breixobaloca (12-19-2017)

  10. #8
    Join Date
    Sep 2017
    Location
    Romania
    Posts
    226
    Thanks Thanks Given 
    95
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    I think that you have readed too much negative things about this unit telled by the people with high knowdlegement in PSU designs, from de perfection side of things. I mean the things what we would like to see from a brand like Seasonic in a low cost unit also.
    You have nothing to worry about, since your PC is stable, and you not measured the voltages with a multimeter for see the exact values within 0.05℅ of multimeter accuracy but you rely just on software readings who is possible not to be accurate at all.
    That PSU series is selled across the globe and if you just read the reviews of the owners you will have a good surprise. Like on those major players on the ecommerce in the liks below:
    https://m.newegg.com/products/N82E16...reviews?Page=2
    https://www.amazon.com/gp/aw/cr/B002A17OG0/ref=mw_dp_cr
    You can also made a search on the various sites in more contries and translate it with google, for view more opinions. And this is the reality, not an exceptionzl scenario thinked or measured by reviewers or the PSU specialists.
    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

    Finally, i would definitley not reccomend a group regulated unit for a brand new PC since on the market there are many PSU's with DC-DC conversion.
    But if you already own that PSU and you PC is ok you have nothing to worry about.

  11. #9
    Join Date
    Dec 2017
    Location
    Vancouver, BC
    Posts
    9
    Thanks Thanks Given 
    1
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    As someone who has had some experience with S12II issues, I can say that it isn't a crap unit. It won't explode, take out components, nor produce out-of-spec voltages.

    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.

    If you can live with those problems, then you'll be fine with its performance.

  12. #10
    Join Date
    Nov 2017
    Location
    Somewhere in the world...
    Posts
    51
    Thanks Thanks Given 
    6
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    Quote Originally Posted by rafal_iB_PL View Post
    Since you already have it, I wouldn't worry, until you have actual issues that might be PSU related.
    I don't have any issues with the PC right now. All components are stable. Hmm, PSU is stable ? We'll see.

Similar Threads

  1. seasonic quality
    By ronss in forum PC Power Supply Discussion
    Replies: 40
    Last Post: 07-18-2018, 08:11 PM
  2. Do high quality PSUs really worth it ?
    By Overclocked in forum PC Power Supply Discussion
    Replies: 16
    Last Post: 11-28-2017, 03:38 PM
  3. Replies: 23
    Last Post: 03-09-2017, 05:50 AM
  4. High-Quality, Low-Wattage PSUs
    By TaroTsujimoto in forum PC Power Supply Discussion
    Replies: 30
    Last Post: 08-12-2015, 07:08 PM
  5. Quality of new CWT 80plus Gold PSUs
    By adict2jane in forum PC Power Supply Discussion
    Replies: 29
    Last Post: 02-19-2010, 12:42 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •