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  1.    14 Oct 2017 #1
    Join Date : Mar 2016
    Posts : 213
    win 10 home

    How long to keep computer switched on?


    that is safely for the computer, and premises?

    I don't always turn mine off at night, but wonder if I am incorrect, though I do believe some folk leave their machine almost permanently on.
      My ComputerSystem Spec
  2.    14 Oct 2017 #2
    Join Date : Jul 2016
    Crewe Cheshire
    Posts : 1,464
    windows 10

    Most parts break on startup due to heat change going from cold to hot its less likely to fail if left on
      My ComputerSystem Spec
  3.    14 Oct 2017 #3
    Join Date : Sep 2015
    Staffordshire
    Posts : 364
    Windows 10 Pro

    There are good arguments for both methods.
    However if you are leaving it on 24/7 it will accumulate dust a lot quicker and make sure you are using a UPS to protect against power outages or surges and if you let it hibernate that's nearly the same as turning it off anyway. So nothing gained.
      My ComputersSystem Spec
  4.    15 Oct 2017 #4
    Join Date : Jun 2015
    UK
    Posts : 2,101
    Windows 10 Home x64 (Laptop), Windows 10 Pro x64 (Desktop)

    Any fireman will tell you to turn off all electrical devices where possible to minimise the risk of fire. I would turn the PC off unless you have some critical need to keep the PC on overnight.
      My ComputersSystem Spec
  5.    15 Oct 2017 #5
    Join Date : Dec 2015
    Posts : 107
    Windows 10

    Most electronic devices lifetime revolves around Capacitors , Short Circuiting & Frying Chips , whichever coming first .

    So judging that your device have a good cooling system that is often serviced by you (cleaning all the compiling dust) would save a chip for indefinite years .

    A mean to save it from altering current intensity (hopefully being on a good electrical grid or attached to a stabilizer *) then you're good with circuits too .

    Then you'd be down to capacitors **, now these are known to have a defined life span averaging 10,000 hrs of use (close to a year and a half) , some companies ex: Asus / Lenovo claim they use 20,000 hrs of use capacitors and market this to be a lifetime indefinite capacitors (they do not put constant on state in consideration) giving them a 3 years span of being constantly on .

    On a side notice capacitors of a desktop motherboard can be replaced by a technician , however that of a laptop or a hard-drive (yes they do use ones) need more of a jewel maker to have them replaced ***.

    So bottom line your bottle neck would be capacitors and a life span of 2 ~ 4 years tops before device failure in case of constant on .

    * Current stabilizer
    Click image for larger version. 

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    ** Desktop Capacitor

    Click image for larger version. 

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    *** Laptop Capacitor
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      My ComputerSystem Spec
  6.    15 Oct 2017 #6
    Join Date : Jul 2015
    Posts : 9,414
    Windows 10 Pro

    Quote Originally Posted by nIGHTmAYOR View Post
    Then you'd be down to capacitors **, now these are known to have a defined life span averaging 10,000 hrs of use (close to a year and a half) , some companies ex: Asus / Lenovo claim they use 20,000 hrs of use capacitors and market this to be a lifetime indefinite capacitors (they do not put constant on state in consideration) giving them a 3 years span of being constantly on.
    I would be highly upset if I only got 2-3 years of service out of my electronics that are energized 24/7. I think the above is...ummm....a large percentage of hooey.
      My ComputerSystem Spec
  7.    15 Oct 2017 #7
    Join Date : Dec 2015
    Posts : 5,993
    Windows10

    I left my old sony on for nearly six years, only switching off occasionally. Frankly, these days it does not really matter much leaving them on 24/7. The average house has loads of things left on all the time or in standby - tvs, satellite boxes, router etc.
      My ComputerSystem Spec
  8.    15 Oct 2017 #8
    Join Date : Oct 2015
    Posts : 2,047
    Windows 10 Pro X64

    Hi,

    Quote Originally Posted by NavyLCDR View Post
    I would be highly upset if I only got 2-3 years of service out of my electronics that are energized 24/7. I think the above is...ummm....a large percentage of hooey.
    That's correct. 24/7 MBs are guaranteed to last at least for 10 years continuous service. All caps are solid caps, meaning they do not use any electrolytic that can dry up.

    Personally I would not leave a machine running 24/7 nowadays unless it pays for itself doing so.

    Cheers,
      My ComputersSystem Spec
  9.    15 Oct 2017 #9
    Join Date : Oct 2014
    Posts : 920
    Windows 10 Pro

    I run a fileservee 24x7. Has been running for nearly 4 years now.
      My ComputerSystem Spec
  10.    15 Oct 2017 #10
    Join Date : Jun 2014
    UK
    Posts : 1,052
    W10 pro x64 and W8.1 x86

    Quote Originally Posted by NavyLCDR View Post
    I would be highly upset if I only got 2-3 years of service out of my electronics that are energized 24/7. I think the above is...ummm....a large percentage of hooey.
    Hooey Well yes and no. A little knowledge can be a dangerous thing.

    Capacitors do actually have quoted lifetimes which are shown in the relevant data sheets. You might be surprised just how 'low' some are. Typically a top quality part will have a quoted 'life' of at least 2000 hrs with the very best of the best at nearer 10,000 hrs, which is.... just over a year. And everything in between based on price/size/performance.

    The good news is that this has no bearing on how long they last in a given application because these lifetime figures are also quoted at worst case usage conditions, which for electrolytic caps (which are the kind we are talking about here) mean operating at the maximum temperature rating (105C for most quality parts, 85C for standard commercial grade) and also at the maximum 'ripple current'... the AC current passing through the device under very specific test conditions.

    So no need to worry folks. Lifetimes of 10 to 15 yrs are easily achievable, even with 24/7 usage for correctly designed equipment.
      My ComputerSystem Spec

 
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