Question about power supply 'Amp' ratings (rated current)

Discussion in 'Mac Pro' started by tjasinto, Jan 27, 2007.

  1. tjasinto macrumors newbie

    Joined:
    Dec 14, 2006
    #1
    Hi all. I have a Powermac MDD Dual 867 Mhz G4 'the wind tunnel macs'..LOL

    I'm replacing the 2 power supply fans.

    I got a hold of 3 different thermaltake fans. All of them are 60x60x25mm.

    One of them, an old (approx 4 years old) Thermaltake Volcano 5 has an amp rating of 0.19 amp.

    The other 2 fans have rated currents of 0.17 and 0.32 amps. These 2 fans are brand new.

    I know for sure that the Volcano 5 would work with my power supply but like I said it's old and it probably has anohter year of life in it.

    Which fans should I use in my power supply? How does the different current ratings affect my decision if they have any affect at all..

    Thanks
     
  2. SmurfBoxMasta macrumors 65816

    SmurfBoxMasta

    Joined:
    Nov 24, 2005
    Location:
    I'm only really here at night.
    #2
    that little of a diff in amp ratings aint gonna matter, unless of course, you've already got 100's of other high-amperage devices suckin lotsa juice from the psu........

    However, generally, the higher the amps, the faster the fan can run, and therefore probably be capable of moving a bit more air, depending on the overall design. Also generally, the more air it moves, the more noise the fan will make......
     

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