psu/amp question

Discussion in 'OT Technology' started by BeastBriGanTe, May 31, 2008.

  1. BeastBriGanTe

    BeastBriGanTe New Member

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    im gonna get an 8800 but i only have a psu 500 23/a its a antec neohe 500. from what i understand 8800 go to 26 a . Will the card be useable?
     
  2. P07r0457

    P07r0457 New Member

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    antec psu. it's not even putting out what it's rated for. don't bother.
     
  3. Doomsday

    Doomsday XXX

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  4. BeastBriGanTe

    BeastBriGanTe New Member

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  5. Doomsday

    Doomsday XXX

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    looks like that's the same unit.

    anyway,... this is from Antec's site for the Neo HE 500 and should be the same on your PSU's label/sticker.
    [​IMG]

    the 23A (+3.3V) are usually used by RAM, ICs, etc.
    what you need to look at is the +12V rail. this is what the vid card will use.

    as you can see in that chart, it has 3 +12V rails (+12V1, +12V2, +12V3) @ 17A each, with 456W available power.

    to compute for the total amps,... you don't add the 3 +12V rails (17A + 17A + 17A = 51amps). it doesn't work that way. that PSU actually has a single +12v rail split into 3.
    it should be W / V = A.
    456W (the available power for all the +12V rails) / 12V = 38A

    when a card manufacturer states that a vid card requires 22-36 amps on the +12V rail,... it is for the whole system so the card can function normally.

    you have 38A. as long as your other components are not hogging all of this, the card should work.
     
  6. BeastBriGanTe

    BeastBriGanTe New Member

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    oh i feel like a fucking idiot thanks
     

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