5 Replies Latest reply on Jul 10, 2010 8:00 PM by Harm Millaard

    Power supply ...symptoms

    shooternz Level 6

      What would be the observable (not measureable) symptoms of a power supply with an under capacity?

        • 1. Re: Power supply ...symptoms
          Harm Millaard Level 7

          Random crashes, hangs, stalls and other weird problems.

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          • 2. Re: Power supply ...symptoms
            John T Smith Adobe Community Professional & MVP

            In the "weird problems" category... I think "snow" in the video COULD be caused by a failing power supply


            For example... not computer, but similar


            We use X10 controls for lighting, and had a recent "failure to operate" 'cause our refridgerator was going bad and the motor and/or controls were putting "noise" on the electric line... said noise was blanking out the X10 signals


            I don't have a scope to look at the house power, but I'm sure that if I did have one, the usually clean sine wave of 60hz power would have been FUZZY with all the 'fridge noise


            Something like that in a computer can cause all sorts of problems

            • 3. Re: Power supply ...symptoms
              shooternz Level 6

              I am getting the occassional "sleepy" state requiring the timeline to require "awakening".


              I think I will now throw in a bigger PSU as Harm recommended some time ago when I did my build.


              Always had the intention of doing so anyway.


              EDIT: Purchased a CoolerMaster 850w unit. (Super Silent)  will fit it once I clear 3 deadline critical projects early this week.  Will report if it makes a difference in regard to the instance mentioned above.


              Message was edited by: shooternz

              • 4. Re: Power supply ...symptoms
                shooternz Level 6

                FX3800 - max power consumption. = 108watts  (Previously I was unable to find this figure and put it into the Calculator).


                How does that compare with other video cards?





                What sort of overhead is desireable in a PSU?

                • 5. Re: Power supply ...symptoms
                  Harm Millaard Level 7

                  This is my approach:


                  eXtreme Power Supply Calculator Pro v2.5


                  If you don't have it yet, get the Pro version. It is peanuts. Then log-in and fill out all your components, including disks, burners, fans, etc. Then set CPU load to 100% and capacitor aging to 30%. Calculate and for safety add 10 - 15 % to the number. Take note of the requirements per rail, as not all PSU's can deliver the required power on the individual rails, but appear OK with regards to the total.

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