Ati Hd5750 power requirements

I Have An Antec Neo HE 550Watt power supply im woundering if it will run the Ati HD 5750.... i dont realy understand how rails work will someone plz help! :o
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More about hd5750 power requirements
  1. Your PSU will run a 5750 just fine. A 5750 only needs about 6 amps - around 70 watts.

    If you look at the label on your PSU, it will tell you it has 3 rails each with a maximum rating of 18 amps. Your total is not 54 amps. That's 648 watts.

    Below the current ratings, there should be a line telling you the max total 12 volt power in watts. Divide that number by 12 to get the max 12 volt amps. I'm guessing that it is around 40 amps. That's a reasonable number for a pretty good 550 watt PSU.
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