I live in a downtown area and have almost never experienced a power outage—just one brief flicker during a thunderstorm several years ago. People keep warning me about outages and power problems, though. Do I really need an uninterruptible power supply, or would a decent surge protector be enough for a computer connected to a generally stable electrical grid?
3 Answers
If your local power is reasonably stable, plugging the computer into the wall is generally fine. A power outage usually just turns the PC off; the bigger risk is losing unsaved work or corrupting data during a write. A UPS is useful if outages are frequent or you need uninterrupted operation, but most home users don't strictly need one.
A good surge protector is a sensible middle ground. It can help with voltage spikes, while the protections built into a decent power supply handle ordinary fluctuations. Make sure it is a properly rated product rather than just a cheap power strip.
Are there any particular features or ratings I should look for in a surge protector?
Most computers run for years from a wall outlet or basic surge-protected strip without problems, especially where the electrical grid is reliable. A UPS mainly adds battery backup and can keep the computer running through short interruptions, giving you time to save your work and shut down cleanly. It is helpful, but not mandatory for a typical desktop.
That makes sense. I mainly want to avoid buying a UPS if a normal setup is already safe.