Power Supply for Radeon HD 5770 Graphics Card

Hi, I have this power supply

Thermal master ATX 12v (TM-420-PMSR) 420w

Dc output +12v +5v +3.3v -5v -12v +5cb
Current 16A 30A 30A 0.5A 0.5A 2A

I was wondering whether that would work with the Radeon HD 5770 Graphics card.

I thought there wasn't isn't amps on the 12V rail but then I saw this link:
http://www.tomshardware.com/forum/290399-33-termaltake-400w-radeon-5770

So, does that mean my power supply may by sufficient?

Thanks a lot in advance
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More about power supply radeon 5770 graphics card
  1. The wattage is sufficient, but i'm not sure about the amperage =/ Maybe somebody who knows more about amps & rails can help you out here.
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