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  1. #1

    Member Since
    Dec 28, 2004
    Max wattage of a G5 power supply
    For whatever reason, when I turn on/off my diningroom light the Mac wakes up from sleep mode and revs his fans for a few seconds. I'm no electrician, but I would guess this shouldn't happen. As a result, I decided I should invest some cash in a decent UPS with Automatic Voltage Regulation. My problem comes in trying to estimate the maximum amount of power my dual 2.0 G5, 20" cinema display, scanner, and deskjet printer would pull if all were running simultaneously at full bore. I can do the math and figure out the peripherals, but I don't know what size power supply is in my Mac. I both pulled the cover off and scoured the Internet (to include Appl'es website), but haven't been able to come up with the wattage of my power supply. Any thoughts?

  2. #2

    Graeme43's Avatar
    Member Since
    Dec 15, 2003
    I love student discount (sig)
    I think the G5 power supply is around 560W

    Don't quote me though
    iBook G3 (2001) 500MHz 384 RAM 9.2.2 / 10.2.8
    Titanium PowerBook G4 (2001) 500MHz 768 RAM 9.2.2/10.2.8
    Mac Pro (2007) 4x2.66GHz, 6GB RAM, 10.6.7
    iPad 3G + iPhone 4

  3. #3

    Member Since
    Apr 25, 2003
    The home of the free and the land that did for Braveheart.
    24"iMac, 15"MB-Pro, MacBook, G4 iMac, PM G5 2x2Ghz, G4 iBook & Some PCs

  4. #4

    Member Since
    Dec 28, 2004
    Got it, Thanks
    I'm certainly glad I decided to ask the question before I pissed away money on an UPS that would have been insufficient for the job. I was going to get an 800VA (540w) UPS. It might have been almost enough for the Mac alone, but not the monitor and the peripherals. Thanks again.

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