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Mines bigger than yours. (ampage)

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  • Mines bigger than yours. (ampage)

    Ok we have all seen 'power calculators' where you put in your spec and it says how many watts you need, but is it TRUE..........

    What actually happens in the real world?

    So, howabout we post our spec and a true amp meter reading.

    (You /do/ know how much your system takes, right?)

    I have....

    amd 1700xp+ (clocked at 133*11)(or was it 10.5)
    kt7a-raid
    3 laptop hds.
    2 usb hubs
    1 dvd writers
    1 usb 2 card
    1 wifi card
    1 sound card
    1 4 ch comport card
    512mb
    matrox marvel
    powered tv tuner
    3 mice
    2 keyboard
    joypad
    inveter+psu


    13 amps running hard(dvd playback).
    (measured at input to inverter)
    Lez, more widely known as flez1966

  • #2
    155 watts input? to an inverter? thats then feeding a normal mains rated powersupply?

    meaning, you're probably only looking at ~100watts used by the computer, when you take into consideration the efficiencies of the powesupply, and inverter... hmm

    Comment


    • #3
      And??????????

      What are you running, and whats it drawing, that was the idea of this thread, to get a list/lookup of common power use for common sized systems so ppl new to the group could get an idea of which end of the ballpark they in when building their first system.


      I didnt ask to start an inverter slating war in this thread, go to the other thread for that one, I'l be happy to oblige.
      Lez, more widely known as flez1966

      Comment


      • #4
        Mine's smaller then yours.

        PCM-9373 1GHz Via C3
        256Mb RAM
        8Gb compact flash II hard drive
        512Mb flash disk-on-module boot drive
        ISR power supply/shutdown controller built on PT5071 and PT6625 ISRs
        LTM08C351 8.4" toshiba panel
        PCM3540 LVDS receiver
        Penmount 5184 USB touch controller
        4 wire resistive AMT 9530 panel
        TDK CXA-P1212C-WJL inverter.

        Total consumption is 32.5W measured at input to power supply.
        Old Systems retired due to new car
        New system at design/prototype stage on BeagleBoard.

        Comment


        • #5
          32.5 watt must be at nothing happening?

          a 1ghz cpu running 100% load must be more than 32w surely, my amd says it needs more than that.
          Lez, more widely known as flez1966

          Comment


          • #6
            Maximum power consumption of a Via C3 Nehemiah 1.00 GHz processor is 15W.
            That is the thermal design power consumption from the data sheet.
            Source : http://www.via.com.tw/en/products/processors/c3/
            Page 5-15 of the VIA C3 Datasheet (C5P Nehemiah EBGA Core).
            The remainder of the power consumption is mostly for the screen backlight.

            Edit : I believe I have the LP version, which is a max 11W.
            Old Systems retired due to new car
            New system at design/prototype stage on BeagleBoard.

            Comment


            • #7
              wow, 1ghz of procesing power in 15w, wtf is intel/amd doing wrong????
              Lez, more widely known as flez1966

              Comment


              • #8
                Look at the power specs for Pentium M - then you'll see impressive. It comes with a price tag however.
                I was half tempted, but then C3 was enough for what I wanted to do, and the single 5V (+optional 12V) of the PCM9373 persuaded me.
                Old Systems retired due to new car
                New system at design/prototype stage on BeagleBoard.

                Comment


                • #9
                  Originally posted by lez
                  wow, 1ghz of procesing power in 15w, wtf is intel/amd doing wrong????
                  Benchmark the VIA 1ghz C3 against a 1ghz Intel or AMD chip from past or current generations....... Then you will see what they are doing right.

                  The VIA's are made for niche applications where low power draw is attractive.

                  Comment


                  • #10
                    Originally posted by RawsonDR
                    Benchmark the VIA 1ghz C3 against a 1ghz Intel or AMD chip from past or current generations....... Then you will see what they are doing right.

                    The VIA's are made for niche applications where low power draw is attractive.

                    MHz/GHz is not the be-all and end-all.
                    Old Systems retired due to new car
                    New system at design/prototype stage on BeagleBoard.

                    Comment


                    • #11
                      Originally posted by RawsonDR
                      Benchmark the VIA 1ghz C3 against a 1ghz Intel or AMD chip from past or current generations....... Then you will see what they are doing right.

                      The VIA's are made for niche applications where low power draw is attractive.

                      Lets find P4 at 1GHz j/k



                      Well my system needs 5,2 A at 13,8 V during DVD playback ( ie 71W)
                      "We cannot solve our problems with the same thinking we used when we created them."
                      AE

                      Comment


                      • #12
                        2500+
                        nForce2 board
                        nVidia MX4000
                        120 gig 3.5"
                        2x 512 ddr400
                        802.11g


                        atx psu/inverter

                        measurements taken between inverter and battery

                        measured 3 to 4 amps / 12.3v at idle

                        that's about 43 watts

                        measured <10 amps / 12.3v max load (which happens to be while loading windows)

                        that's no more than 123 watts including inverter/psu inefficiency

                        Comment

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