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Power Supplies

When you purchase a new case, it usually comes equipped with a power supply, but you can also purchase power supplies separately. The two main reasons for purchasing a separate power supply are as follows:

  • Your existing power supply fails.

  • You want to add additional devices to your PC, and your existing power supply does not output sufficient wattage. Older PCs with only a few internal devices have been shipped with smaller wattage power supplies. If your power supply is in the 75 to 125W range, you should consider replacing it for this reason.


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