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My new power supply for my dell

\015 I am getting a new 750 watt power supply and 1 dell guy said its good to have more power and another said it might break my motherboard which is true?i have an optiplex 320\015

Answers :

As long as the wiring is correct the first guy is probably right...better to have excess power than not enough. The PC will only draw the amount of power it actually needs.....not the full 750watts all the time.
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