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xXX--*Can 5 12v rails@18a power a gtx 660ti??*--XXx

I have been very confused on how to calculate the total amps on my psu. I have 5 12v rails which each individually have 18a. The PSU is an alienware nps-750ab-1. I would really like to upgrade my rig with a 660ti but I am afraid my PSU won't be able to handle it. If anyone has any clear solutions to this problem and could school me a bit on how to find the total amps and let me know if I would be able to use a 660ti efficiently I would be very grateful.
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  1. Best answer
    You actually have 3 - 18 amp 12v+ rails which is more than enough to run a 660ti.

    Specifications:
    +5V / 16.0A
    +5VFP / 3.0A
    +12VA / 18.0A
    +12VC / 18.0A
    +12VE / 18.0A
    :bounce:
    -12V / 0.2A
    +3.3V / 30.0A
    +12VB / 18.0A
    +12VD / 16.0A
  2. Sweet:) Does that mean that the +12VB and +12VD power the CPU and MB?
  3. 24-pin Motherboard (+12VD)
    20-pin Motherboard (+12VA, +12VB, +12VC)
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