Corsair 1050hx PSU and GTX 580 SLI question (Amps)

i have a question about SLI and the power supplys amps, and im hoping someone can solve this for me.

the corsair 1050hx i believe has +12V 1: 87.5 A (correct me if im wrong)

a gtx 580 needs a psu of at least 600 Watts with a +12 Volt current rating of 42 Amps, now if i wanted to get 2 gtx 580
now if i want to run 2 way SLI do i need to double the amps by two? so the psu would need at least 82 amps on the +12v rail to run both? i know the 1050hx can run the 2 cards, the whole amps has always confused me haha.

hope someone can solve this for me thanks.
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More about corsair 1050hx question amps
  1. They are recommending for total system power when they say 42amps. The HX1050 is plenty and some. Here total system load running Furmark 850watt http://www.anandtech.com/show/4239/nvidias-geforce-gtx-590-duking-it-out-for-the-single-card-king/16
  2. +1
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