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Do I need a UPS to prevent damage to my home PC?

Last Modified: 2013-12-11
I live in home with Brown outs and need to know what damage if any the broen out will cause to my computer.
It has a 1200watt psu. If brown outs will damage my psu what do I need to protect it, minimum?
Also if brown out might damage psu will it damage other hardware as well?

ps. Aren't modern PSU's built to withstand variable current?

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