Power Supply

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  • Trevor Schell
    Moderator Emeritus
    • Aug 2000
    • 10935

    Power Supply

    I am about to pounce on a new case, however I can buy this case with a 300 watt power supply included or a 420 watt power supply.

    What would be sufficient. In what I have seen so far, the 300 watt size seems to be most common. So why would there be a 420 watt supply available? What would you need it for?,, or is more better.

    Thanks.




    Trevor
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  • JonMarsh
    Mad Max Moderator
    • Aug 2000
    • 15329

    #2
    Well, Trevor,

    If you have a power hungry CPU, lots of RAM, and a high performance GForce video card, that ups the ante for base system power. Note that Pentium IV systems even have a special 12V connector for extra power for the CPU.

    Then, there's peripherals. One or two hard disks. A CD-R or CD-RW; a DVD-ROM drive. A sound card. An NIC card, if its not on the motherboard. USB power. Etc.

    Then, many modern power supplies use variable speed fans; depending on power usage and heat buildup, the fan speed varies. If you want a quiet system, a 400W supply running at 65% of capacity may be a better bet than a 300 watt supply running at 88% capacity. But don't make assumptions; check out the MFR's specs.

    As a former mil/aerospace power supply designer, I feel more comfortable if the supply isn't working too hard. Plus, I've seen too many PC problems arise because of marginal power supply behavior- I think I recall KennyG having some problems in that regard last year.

    Best regards,

    Jon




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    Comment

    • P-Dub
      Office Moderator
      • Aug 2000
      • 6766

      #3
      More power is always the best route. You have to ask?
      Paul

      There are three kinds of people in this world; those that can count, and those that can't.

      Comment

      • Andrew Pratt
        Moderator Emeritus
        • Aug 2000
        • 16507

        #4
        trev this isn't like you Go big or go home LOL




        Comment

        • Trevor Schell
          Moderator Emeritus
          • Aug 2000
          • 10935

          #5
          ,,OK Guys.
          I guess that was a crazy question.

          Thanks Jon for the excellent explanation, really appreciated.It all makes sense now..420 it is.




          Trevor
          My HomeTheater S.E.
          Sonically Enhanced
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          Trevor



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          Comment

          • Bing Fung
            Ultra Senior Member
            • Aug 2000
            • 6521

            #6
            Nothing for me to add here...




            Bing
            Bing

            Comment

            • Trevor Schell
              Moderator Emeritus
              • Aug 2000
              • 10935

              #7
              Padding your post count Bing.

              My new baby will have a nice 400 watt power supply.

              The Antec SX1040 in Black.




              Trevor
              My HomeTheater S.E.
              Sonically Enhanced
              C5
              Trevor



              XBOX 360 CARD

              Comment

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