A PC works fine without a UPS provided there is no sudden power cuts or if it gets consistent Power supply.

Uninterrupted Power Supply or a UPS ensures Power to your PC during Power-cuts. A PC needs to be shut down properly to avoid any software corruption. During this shut down Process which takes a few minutes time, system files and data is saved back in Hard drive.

A 550va-650va UPS Provides A minimum amount of backup for 10-15 minutes which is required you to safely come out of what you were doing and shut PC down.

800va or higher capacity UPS can be considered if you need longer backup.

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