Quick Answer

When upgrading a power supply, do not ignore the warranty: a quality 750-850W unit (around R1,800-R3,000) should carry a 7 to 10 year warranty, which signals the build quality that protects your other parts. A PSU is the one component whose failure can damage a GPU and motherboard, so a long warranty and local support matter as much as the wattage.

Why warranty reflects PSU quality

Power supplies are rated by lifespan, and the warranty length is a direct signal of the capacitors and protection circuitry inside. A budget unit with a 2-3 year warranty often uses cheaper components that age and can fail under an RTX 40-class load; a 7-10 year warranty marks a unit built to survive years of duty. Since a failing PSU can take a GPU and board with it, the warranty is really insurance on every part downstream, which is why it belongs on the upgrade checklist alongside connectors and wattage.

Local support and the right tier

For SA buyers, confirm the warranty is honoured locally rather than requiring an overseas return, since a dead PSU under load needs quick replacement. An 80 Plus Gold 750-850W unit with a long warranty suits a build with a Ryzen 7 7700 and an RTX 4070 holding 60-100fps at 1440p. Avoid the cheapest no-name units with vague warranties; the small saving is not worth risking a R30,000 GPU. Match the wattage to the GPU, then weight the choice toward the longer-warrantied, locally supported model.

FAQ

How long should a PSU warranty be?

A quality 750-850W unit should carry 7 to 10 years. The warranty length reflects the capacitor and protection-circuit quality, and a longer term signals a unit built to last through years of GPU load.

Can a failing power supply damage other parts?

Yes. A PSU failure can send a voltage spike that damages the GPU and motherboard, so it is the one part where build quality protects everything downstream. A long warranty signals that protection.

Is a cheap PSU worth the risk?

Rarely. The cheapest no-name units use weaker components and vague warranties, and a failure can ruin a far more expensive GPU. A long-warranty 80 Plus Gold unit is cheap insurance for an RTX-class build.

TIP

750-850W 80 Plus Gold PSU with a 7-10 year, locally supported warranty, since the warranty length is your best signal of the build quality that protects every other part.