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I am going to buy a new UPS for my PS3 because when I play Uncharted 2 my UPS (600watts) doesnt hold and when the power goes away my system turns off with it and last time it wouldn't turn back on (not even to stand by mode) for about 5 minutes. So can someone please tell me of how many watts should I get the new UPS so that it won't turn off because of the power. Thank you.