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PSU 101: A Guide and Q&A Thread for PSU

  • 100% CPU load, Prime95 = 47W to 48W




    100% CPU + 100% GPU load, Prime95 + FurMark = 60W to 65W




    With these numbers, the Silverstone SFX-300W power supply won't even break a sweat.
  • On the topic of the Corsair VS series, baka mataas lang ang lemon rate niya. Marami kasi ako kilalang matagal na gumagamit ng VS450. Siguro pag yung unit niyo tumagal ng ilang months ibig sabihin ok na siya. Observation ko lang kaya di rin 100% sure
  • ^ Wala naman kasing valid statistical data available para makapag-conclude that a certain PSU has a high failure rate

    -- edited by bintsmok on May 01 2016, 08:46 PM
  • Yep, malaking problema talaga sa pag gauge ng build quality yung lack of data, hanggang anecdotes lang talaga tayo sadly
  • @dm1179

    sir na try mo na mag laro jan sa skylake mo ?
  • ^Sorry bro, I don't play PC games now eh.
  • Noob question. Just want to confirm:

    If I have a PSU that is rated at 850W, does this mean that it draws 850W from the main line all the time while the pc is running, and everything in excess of the power consumption of the pc components will be turn to heat (wasted)? Or the 850W rating is the maximum power it can draw from the main line and it can draw anywhere from the needed power of all components up to 850W (say 650W - 850W)? I'm contemplating on buying an 850W PSU but my rig does not require that much power, but I have no choice because the 850W PSU is the more durable build/brand compared to the other available PSU's here. I'm concern about my electric bill because I'll be using my pc for at least 18 hours per day.

    Thanks!
  • @ pinoy_freelancer

    pagkakaalam ko sir 850W is the maximum rated watts that ur PSU can supply sa isang system not necessarily na 850W all the time ang icoconsume nya sa wall outlet mo. Kung anu lang ang i-require ni PC kay PSU un lang ibibigay nya, lets say naka-idle ang PC mo and need lang nya ng 60W, so si PSU 60W lang ang isusupply nya kay PC not the full 850W.
  • @pinoy_freelancer: See my photos above and previous page. I have a 300W PSU. Power consumption depends on the load of your computer system. At idle, my Skylake PC only consumes 14W-16W. At full load, it only consumes 47W-65W.
  • Noob question. Just want to confirm:

    If I have a PSU that is rated at 850W, does this mean that it draws 850W from the main line all the time while the pc is running, and everything in excess of the power consumption of the pc components will be turn to heat (wasted)? Or the 850W rating is the maximum power it can draw from the main line and it can draw anywhere from the needed power of all components up to 850W (say 650W - 850W)? I'm contemplating on buying an 850W PSU but my rig does not require that much power, but I have no choice because the 850W PSU is the more durable build/brand compared to the other available PSU's here. I'm concern about my electric bill because I'll be using my pc for at least 18 hours per day.


    nope, parang makina ng kotse yan. Mas mataas ang fuel consumption (per minute not per km) pag mabilis ka. Pag idle ka or low speed, di mataas ang fuel consumption.
  • nope, parang makina ng kotse yan. Mas mataas ang fuel consumption (per minute not per km) pag mabilis ka. Pag idle ka or low speed, di mataas ang fuel consumption.


    Not good example ang car engine. Driving at low speed in EDSA traffic gives higher fuel consumption. Driving at high speed in the expressway gives lower fuel consumption.
  • As I thought! Just really wanted to double check. PSU nalng kasi yung kulang, good to go na pg assemble bukas.

    Last question: Wala nmang side effect ano sa ibang parts ng pc kung yung PSU sobrang sobra dun sa required/needed na power ng rig?

    Thanks! @aimsrhod @dm1179 @AmalgamvsAloof
  • @ pinoy_freelancer

    go lang sir la po problem yan :)
    un nga lang it will cost you more
  • @pinoy_freelancer

    Another thing I would like to add is if you estimate your PC consumes 250W on average then go with a 500W PSU. If your PC consumes around 300W on average then go with a 600W PSU... and so on.

    Reason for this is true rated PSU's with 80PLUS Bronze, Gold, or Platinum rating operate most efficiently at 50% load. So try to aim for 50% load on your PSU to maximize savings on electricity and increase the life span of the PSU :-)




    So for example if you bought a 500W Gold rated PSU and your PC needs 250 Watts of power from the PSU, the PSU will only pull 272 Watts from the 220 volt outlet :-)

    -- edited by sleepygeepy on May 12 2016, 10:19 PM
  • @aimsrhod
    go lang sir la po problem yan :)
    un nga lang it will cost you more

    Thanks! 900php yung difference nung bibilhin kung PSU compared dun sa isa pero, I think sulit nman kasi nasa Tier 2 (?) tong bibilhin ko tapos yung isa is nasa Tier4 (?) according dun sa list sa page 1.

    @sleepygeepy

    Another thing I would like to add is if you estimate your PC consumes 250W on average then go with a 500W PSU. If your PC consumes around 300W on average then go with a 600W PSU... and so on.

    Reason for this is true rated PSU's with 80PLUS Bronze, Gold, or Platinum rating operate most efficiently at 50% load. So try to aim for 50% load on your PSU to maximize savings on electricity and increase the life span of the PSU :-)


    Exactly. Yung suggested PSU talaga dapat is 620W kaso wala na dito sa shop. Province kasi ako eh. I'm actually down to two choices: Tier 4 - 750W (Corsair CX750M) vs Tier 2 - 850W. Though mas mahal ng 900php yung 850W, I think it's worth the investment. I also need to protect my rig so I need a durable PSU.

    All the items are already shipped and ready for assembly at the shop, kulang nalang is the decision for the PSU. This is the suggested build and tomorrow I'll be going to the shop, first thing in the morning (excited kasi!):

    cpu, Intel Core i7-6700K 4.0-4.20GHz
    mobo, MSI Z170A Tomahawk
    ram, GSkill Ripjaws V 16GB 2x8GB DDR4 3200
    ssd, Samsung 850 Evo 250GB
    odd, any DVDRW
    hdd, Seagate 2TB 7200rpm 64mb, ST2000DM001 (change to WD 2TB Blue, availability issues)
    gpu, Palit GTX 970 4gb
    psu, Seasonic S12II-620 620Watts 80PLUS Bronze (change to Seasonic M12-II EVO 850W 80PLUS Bronze)
    atx, Tecware Alpha USB3.0
    mon, Dell U2414H 24-inch LED IPS 1920*1080
    hsf, ID Cooling Frostflow 240L Liquid Cooling

    -- edited by pinoy_freelancer on May 13 2016, 12:40 AM

    -- edited by pinoy_freelancer on May 13 2016, 12:41 AM

    -- edited by pinoy_freelancer on May 13 2016, 12:41 AM
  • @pinoy_freelancer
    Exactly. Yung suggested PSU talaga dapat is 620W kaso wala na dito sa shop. Province kasi ako eh. I'm actually down to two choices: Tier 4 - 750W (Corsair CX750M) vs Tier 2 - 850W. Though mas mahal ng 900php yung 850W, I think it's worth the investment. I also need to protect my rig so I need a durable PSU.

    Well if it's a choice between Corsair CX750M and Seasonic M12II EVO 850 then of course go with Seasonic hehe :-)

    But in case other Seasonic models are available, Seasonic G-650 or Seasonic X-650 are also good choices for your build and cost almost the same as the M12II EVO 850 :-)
  • may sfx na psu bang generic lang yung mura?
  • mga magkano ba ang dapat ilagay sa budget para sa psu?