HD 5770. Enough power supply?

dermal_plating

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Oct 29, 2010
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I have a similar problem, so I'll post it here instead of starting a new thread. I just bought a Powercolor 5770 and an Antec TP 750w power supply, but I'm not sure if this is an appropriate PSU to run this graphics card. According to the graphics card guide on this website (http://www.tomshardware.com/forum/279391-28-power-requirements-specs-popular-graphic-cards-guidea) the 5770 needs at least 30 amps on the 12v rail, and ideally should have 38 amps. The trouble is my PSU only has 25 amps on each 12v rail, and the graphics card has only a single 6 pin power connector. Am I misunderstanding this or is do I really need to get a different PSU?
 

dermal_plating

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Oct 29, 2010
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Thank you ct1615, your help is very much appreciated. I am still confused by the whole 12v rail thing, I'd assumed that a 6 pin connector from this PSU could only supply 25 amps due to each of the four 12v rails being rated at only 25 amps. So really each of those rails can supply the PSU's maximum total amps?