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  • Rail?

    Ok I searched for what a rail is, but it came up with like 20 or 30 pages, so if someone doesnt mind, could you explain to me what exactly a rail is?

  • #2
    rail in what sense?

    like a 12v rail, 5v rail?

    ruby on rails?

    rail road?
    PC Components:
    Lilliput; XPC/FLEX mobo; 1.7 ghz P4 Mobile;512 DDR; 160 gb HDD; opus 150; slot usb dvd-rw
    My work log

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    • #3
      Originally posted by Peoples
      rail in what sense?

      like a 12v rail, 5v rail?

      ruby on rails?

      rail road?
      12v, 5v, etc rail. I guess you would call it a voltage rail

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      • #4
        a power supply does not consist of a single voltage, theres a 12v rail a 5v rail a 3.3v rail etc. I'm def no expert on the subject. But basically there is a differnt amount of wattage supplied to make up each rail. So a lot of controversy is seen on this forum about what makes a 150 watt psu versus a 400 watt psu. A power supply might offer 5 amps on the 12v rail and .5 amps on the 3.3v rail. 5A x 12v makes 60 watts on the 12v rail versus .5A x 3.3v 1.65 watts. Depending on where the wattage is pulled may determine the usefullness of a psu's watt rating.


        the above number are complete bs....but it illustrates my point
        PC Components:
        Lilliput; XPC/FLEX mobo; 1.7 ghz P4 Mobile;512 DDR; 160 gb HDD; opus 150; slot usb dvd-rw
        My work log

        Comment


        • #5
          I think he means rail as in wire...
          Renault Megane...the OEM look

          The Lost in Europe Ford Escort

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          • #6
            would been nice if he gave a context
            PC Components:
            Lilliput; XPC/FLEX mobo; 1.7 ghz P4 Mobile;512 DDR; 160 gb HDD; opus 150; slot usb dvd-rw
            My work log

            Comment


            • #7
              Sorry guys for not being more specific, but I have no clue what a rail is and what different kinds there are. I found this posted by Numbers.

              I'd say the opus 150 would suit you just fine, but so many folks seem to be overloading the 5v rail even though their overall consumption is under 150 watts. It's hard to say without actually measuring the draw on each rail.


              So in this post what is he refering to as a Rail?

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              • #8
                in this post they are referencing the use of USB devices, which pull from the 5v rail in the context of which I explained above. Each USB devices pulls round 500 mA......having 10 usb devices in addition to anything else that uses 5v will be a huge burden on the 5v rail (the portion of the psu providing a 5v supply).
                PC Components:
                Lilliput; XPC/FLEX mobo; 1.7 ghz P4 Mobile;512 DDR; 160 gb HDD; opus 150; slot usb dvd-rw
                My work log

                Comment


                • #9
                  Originally posted by Peoples
                  in this post they are referencing the use of USB devices, which pull from the 5v rail in the context of which I explained above. Each USB devices pulls round 500 mA......having 10 usb devices in addition to anything else that uses 5v will be a huge burden on the 5v rail (the portion of the psu providing a 5v supply).
                  Ok so its pretty much something added, that draws power I.E. a game controller.

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                  • #10
                    No, a 'rail' is part of the power supply that provides power to those 'add-ons'.

                    If you have 5V accessories, then the 5V RAIL is going to provide them power.

                    If you have 12V accessories, then the 12V RAIL is going to provide power.

                    etc, etc
                    mATX mobo
                    2.4 GHz Celeron (prescott)
                    512 MB RAM
                    80 GB 3.5" HD
                    Runnin off an inverter (for now)
                    7" Lilliput
                    Microsoft (Pharos) USB GPS
                    Have yet to pull the trigger on a slim slot load DVD
                    STATUS: who knows... I don't

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                    • #11
                      Originally posted by atlharry
                      No, a 'rail' is part of the power supply that provides power to those 'add-ons'.

                      If you have 5V accessories, then the 5V RAIL is going to provide them power.

                      If you have 12V accessories, then the 12V RAIL is going to provide power.

                      etc, etc
                      Oh I see I get it NOW Thanks everyone for the help.

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                      • #12
                        Originally posted by Cris
                        I think he means rail as in wire...
                        What do you mean by this?

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                        • #13
                          Just to clarify, they don't have to be accessories (USB devices, etc) to draw power from these rails... they can be any part of the computer that draws power (hard drives, network cards, etc).
                          mATX mobo
                          2.4 GHz Celeron (prescott)
                          512 MB RAM
                          80 GB 3.5" HD
                          Runnin off an inverter (for now)
                          7" Lilliput
                          Microsoft (Pharos) USB GPS
                          Have yet to pull the trigger on a slim slot load DVD
                          STATUS: who knows... I don't

                          Comment


                          • #14
                            Originally posted by sup2jzgte
                            What do you mean by this?

                            Rail around here also means wire. e.g: tap into the 5v rail...
                            Renault Megane...the OEM look

                            The Lost in Europe Ford Escort

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