Quick Answer

A UPS checklist for an expensive setup: size it to your PC-plus-monitor wattage with 20-30% headroom, choose line-interactive with AVR, confirm pure or stepped-sine output, and check the runtime gives you minutes to save and shut down. A 1000-1500VA line-interactive UPS (about R2,000-R4,500 at Evetech) protects most gaming and workstation PCs from surges and brief grid dips.

The UPS checklist for SA buyers

  • Wattage: total your PC and monitor draw, add 20-30% headroom so the UPS isn't overloaded.
  • Line-interactive with AVR: smooths voltage sags and spikes without switching to battery for every dip.
  • Sine output: stepped or pure sine suits modern active-PFC PSUs better than basic square-wave units.
  • Runtime: enough minutes to save work and shut down safely after a dip.
  • Surge protection: built-in surge and spike protection for the wall side.

What it protects and what it doesn't

A UPS for an expensive rig is about clean power and a safe shutdown, not all-day backup. It rides out brief interruptions, smooths voltage swings, and gives you time to save. It won't run a high-wattage PC for hours; for that you'd need a far larger unit.

SA buyer note

Match the VA and watt rating to your actual hardware at Evetech rather than guessing. A line-interactive unit with AVR handles SA grid voltage variation well, protecting an expensive GPU and motherboard from sags and surges while giving you a clean shutdown window.

FAQ

What size UPS for an expensive PC?

Total your PC and monitor wattage, add 20-30% headroom, then pick a UPS to match. A 1000-1500VA line-interactive unit suits most gaming and workstation builds.

Do I need pure sine wave output?

For modern active-PFC power supplies, a stepped or pure sine UPS is safer than a basic square-wave unit, which can cause the PSU to behave unpredictably on battery.

How long should the UPS run my PC?

Long enough to save your work and shut down cleanly after a power dip, typically a few minutes. A UPS protects and bridges, it doesn't replace mains for long periods.

TIP

line-interactive UPS with AVR — it smooths SA grid voltage swings without draining the battery on every minor dip, extending battery life.