How does a psu esplosion damage hardware?

Discussion in 'Computer Cases, Power Supplies and Cooling' started by 0bAm3, May 22, 2018.

  1. 0bAm3

    0bAm3 Member

    Messages:
    33
    I have a nice computer but my psu is not name brand so im worried my computer will break in the case of an exposion. I want to know if the explosion itself would kill the components (fire or the bang) or will it send a jolt of electricity that breaks my computer. If it is the explosion that damages it then im fine because my case covers the psu as long with the psu’s own case but if its a jolt that destroys it then i need to change it immediatly but the problem is that i dont know how many watts my computer needs
     
  2. beers

    beers Moderator Staff Member

    Messages:
    8,163
    That's generally what happens at a super basic level. A lot of cheap psus skimp on things like ocp.

    What unit do you have now? There are a few wattage calculators around like https://outervision.com/power-supply-calculator
     
  3. 0bAm3

    0bAm3 Member

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    33
    i tried the calculator but i dont know the name of my hard drive or the number of all the leds in my case because some are being covered by a thick plastic. i need to open my case and deassemble a metal plate to see the hdd
    i then read some reviews of the computer and i read that somebody changed it to an EVGA 450 watt psu
    https://www.amazon.com/EVGA-Bronze-...&qid=1526952174&sr=1-1&keywords=evga+450+watt

    and thought that this psu would work
     
  4. _Pete_

    _Pete_ Active Member

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    480
    If it explodes ("fire or bang") it could destroy a lot more than your computer. That said if any power supply dies, frequently there is an initial power surge. Not even overload protection can always protect against this surge and other components get destroyed. I was an electronics engineer in a former life and it is surprising how often this happens even with the most sophisticated protection. The way a PSU works, very very basically, is that it takes mains voltage, 240 volts OR 110 volts and drops it to 12 volts and 5 volts to drive your computer. If that high voltage, or part of that high voltage, gets on to the low voltage side then the components that only want to see a low voltage will be destroyed.

    As far as buying a PSU for your computer buy the one with the highest wattage rating you can afford your computer will only take what it needs. Also go for well known makes. But don't think that even expensive branded PSUs are indestructable, they are not. Your best, by far, protection is to ensure that all your IMPORTANT files are backed up somewhere else other than your computer.
     
  5. _Glitch

    _Glitch Active Member

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    345
    _Pete_
    Yeah, it can be a bad day if that happens. I had a PSU at my previous school blow up. It required an electrician to fix some broken wirering on the roof.

    If it's a physically spinning harddrive, just pick SATA 7.2K rpm.
    And for the LED's just pick 15 leds. Makes little difference in the calculation.
     
  6. 0bAm3

    0bAm3 Member

    Messages:
    33
    luckily im not at all worried about the data on my computer because most of the data is just steam downloads i dont have important files. what im worried about is my gpu or cpu getting damaged or destroyed. I get a small electric shock when i place my elbow on the corner of the outside of the case and touch my desk at the same time. it only shocks me on my elbow though.
    i got offered this psu

    https://www.amazon.com/EVGA-BRONZE-...01FYDU8X6/ref=cm_cr_arp_d_product_top?ie=UTF8
     
  7. _Pete_

    _Pete_ Active Member

    Messages:
    480
    That smallshock you are getting is probably static electricity. that can, and does, destroy more electronic components than duff power supplies. Some people are more prone to static than others. The amount of static that is around you is also affected by things that furniture and carpets or what you are wearing are made of. If you are gong to be doing any work inside your computer you would be wise to have a look at anti-static procedures whilst working with electronic components such as GPUs and CPUs and other components for that matter.

    Sorry about the waffle that goes on to nearly halfway through the video. But there are others vids there on this subject.



    I don't know about the PSU. I only buy as cheap as chips. But I don't have high end stuff and I am not a gamer or anything. Someone else will have to hellp you with that.

    None of these videos are me incidentally. I do not post anything on You Tube.
     

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