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The card will not overheat. Cards that are OC'd from the manufacturer are tested and validated higher than the reference board they take after. Just make sure you have SOME air circulation in your system.
Sorry, there was a problem. Please try again later.Not at all.I have the exact same card. EVGA simply ups the frequencies on the card and it works the same as non superclocked cards.The fan automatically speeds up when (if) it gets warmer and blows the air out the back. More than likely it uses less power than your GT 640.
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