is this a good psu?

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  • Death Merchant
    Member
    • Feb 2006
    • 1090

    #1

    is this a good psu?





    i dont know much about pwer supplies but does anyone know if this is a good psu to go with a 7800gt?
  • Snake101

    #2
    Re: is this a good psu?

    Yeah thats a great PSU.
    500W is defiantly enough and with the +12V rail being 22A you'll be set :)

    Comment

    • Viathon

      #3
      Re: is this a good psu?

      This power supply (according to the sticker) does have great wattage on all rails but is still only a single 12v rail PSU. More than likely a 20pin atx unit configuration. It is a very good PSU and the only way you should have any troubles with it is if you go SLI and start running dual video cards. Typically the manufacturers bump up the amps on the lesser used rails to get higher overall wattage for advertisment purposes. That is always something to look out for but yours does seem to be well balanced. Hope this helps...

      Comment

      • Umi.Ryuuzaki

        #4
        Re: is this a good psu?

        Double check that PSU. OK stats, but check if it supports PCI-E and the 24-pin main power connector.

        Comment

        • Death Merchant
          Member
          • Feb 2006
          • 1090

          #5
          Re: is this a good psu?

          how would i do that?


          ive not bought the psu this is a link to it




          would the 450 watt power supply be good it only has a 20 amp 12 volt rail

          im never going to go sli ever so i wont have to worry about post 2

          Comment

          • Viathon

            #6
            Re: is this a good psu?

            Umi, it is obvious it does not. If you split a 22 amp rail you are going to have a very flaky system. If you are not running SLI then you have nothing to worry about. a 7800GT really should operate fine on 22 amps but personally, I would probably go with a PSU that has around 29+ on the 12v rail. I currently have a $30 485Watt PSU with dual 12v rails, one 29 amps and the other for SLI is 17 amps. 46 total amps on the 12v side is pretty darn good if you ask me. If you have the money, go for broke though because the PSU is the backbone to a powerful system.

            Comment

            • toxik

              #7
              Re: is this a good psu?

              A good way to tell if a PSU is good is to see how heavy it is. The heavier the PSU, the better it is. If it's light, that means the parts used are cheap and all the watts and amps in the world won't help it last under heavy usage.

              Comment

              • Viathon

                #8
                Re: is this a good psu?

                Originally posted by toxikneedle
                A good way to tell if a PSU is good is to see how heavy it is. The heavier the PSU, the better it is. If it's light, that means the parts used are cheap and all the watts and amps in the world won't help it last under heavy usage.
                Sorry to say, but that is not true. Several manufacturers will use cheaper components which generate more heat, which require more surface area (heatsinks) to keep cool. Heatsinks are heavier than IC's. The weight of the powersupply has nothing to do with quality. You could use a multimeter and monitor the spikes, pits, and any substatial variations in the amperage and voltage on an idle system. Or, you could rip it open and trace IC models to the manufacturers. Better yet, you can read a few reviews.

                Comment

                • Shamus

                  #9
                  Re: is this a good psu?

                  You have offered real good advice Viathon. I thought I was the only PSU fanatic that kept a multi-meter nearby.

                  What PSU for $30.00 are you running that has those high amps?

                  Comment

                  • toxik

                    #10
                    Re: is this a good psu?

                    Originally posted by Viathon
                    Sorry to say, but that is not true. Several manufacturers will use cheaper components which generate more heat, which require more surface area (heatsinks) to keep cool. Heatsinks are heavier than IC's. The weight of the powersupply has nothing to do with quality. You could use a multimeter and monitor the spikes, pits, and any substatial variations in the amperage and voltage on an idle system. Or, you could rip it open and trace IC models to the manufacturers. Better yet, you can read a few reviews.
                    Yeah what manufacturers are those?

                    Comment

                    • lil_jimmy_norton

                      #11
                      Re: is this a good psu?

                      Comment

                      • Viathon

                        #12
                        Re: is this a good psu?

                        Originally posted by toxikneedle
                        Yeah what manufacturers are those?
                        Do some leg work. Crack open an eMachine or any 'heavy' cheapo PSU and grab the transistor & capacitor codes and look them up in the manufacturers tech specs. You will find out exactly what I mean in just a short while. If you need an example, compare the weight and components from a ChiefMax 550Watt (PS-CM-550W-2FAN) and a CoolMax (CR-550B). If you still 'Don't Get It', then I guess all hope is lost for you.

                        Comment

                        • toxik

                          #13
                          Re: is this a good psu?

                          Originally posted by Viathon
                          Do some leg work. Crack open an eMachine or any 'heavy' cheapo PSU and grab the transistor & capacitor codes and look them up in the manufacturers tech specs. You will find out exactly what I mean in just a short while. If you need an example, compare the weight and components from a ChiefMax 550Watt (PS-CM-550W-2FAN) and a CoolMax (CR-550B). If you still 'Don't Get It', then I guess all hope is lost for you.
                          Damn, take a chill pill.

                          Comment

                          • Viathon

                            #14
                            Re: is this a good psu?

                            Originally posted by Shamus
                            You have offered real good advice Viathon. I thought I was the only PSU fanatic that kept a multi-meter nearby.

                            What PSU for $30.00 are you running that has those high amps?
                            I forgot to look last night but I will take a look tonight when I get home and let you know.

                            Originally posted by toxikneedle
                            Damn, take a chill pill.
                            Sorry, I think I got carried away. :hmm:

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