The Corsair RM850e at R1,900 is a sound power supply for a capable PC, but it cannot keep the machine running when wall voltage disappears. A quality PSU handles the computer's internal demand; dips, surges and continuity require correctly chosen protection outside the case as well.

Give each device one job

The Corsair RM850e at R1,900 suits a strong single-GPU system after a connector and load check. Its role ends at converting incoming mains power for the components, so never market it as a battery or surge device.

The Cooler Master Elite Gold ATX 3.1 850W PSU at R930 offers another verified route for a current build. Its 80 PLUS Gold label concerns efficiency, not protection from lightning or poor mains quality.

The ELECSTOR 18W Mini UPS at R536 can support compatible low-voltage networking gear after voltage, polarity and plug checks. It cannot run a desktop PC, monitor or ordinary laptop charger.

Use proper South African protection

A correctly earthed installation and suitable surge equipment matter in storm-prone areas. Ask a qualified person about the premises when repeated dips occur, and save open work often rather than expecting a PSU to bridge an outage.

Document each dip with its time, duration and affected circuits before requesting qualified electrical help.

TIP

Pro Tip ⚡

Need internal power and external protection separated? > Send Evetech the PC parts plus networking equipment for two correctly scoped recommendations.