Quick Answer
An ATX 3.1 PSU is the right buy for any current RTX 40/50 or RX 9000 build because it ships with a native 12V-2x6 connector rated for transient spikes. In SA, quality 750W to 1000W ATX 3.1 units land between roughly R2,200 and R3,800 at Evetech depending on wattage and 80 PLUS tier.
How To Read An ATX 3.1 PSU Spec Sheet
The features that separate ATX 3.1 units are the native 12V-2x6 GPU connector, the 80 PLUS efficiency tier (Bronze, Gold or Platinum), total wattage, and whether the cabling is fully modular. ATX 3.1 tightens the transient-spike handling over ATX 3.0, which matters for power-hungry cards like the RTX 5080 and RX 9070 XT. For a single-GPU build, a Gold-rated, fully modular unit is the practical default.
Picking The Right Wattage And Tier
A mainstream RTX 5070 or RX 9060 XT build is happy on a 650W to 750W ATX 3.1 unit. Step to 850W for an RTX 5080 or RX 9070 XT, and 1000W+ for an RTX 5090. Spend the extra on a higher 80 PLUS tier and a longer warranty rather than buying far more wattage than the system can use. Evetech stocks the full ATX 3.1 range with the connector and warranty details on each listing.
FAQ
How do I choose a ATX 3.1 PSU in SA?
Match the spec to your build first, then compare efficiency tier, warranty and price at Evetech. Buying more capacity than your system needs rarely pays off versus a higher-quality unit at the right size.
Are higher-end ATX 3.1 PSU models worth the premium?
Often yes for the warranty, efficiency and build quality, but only up to the point your use case needs. Compare the listed specs at Evetech and stop paying once the extra spec no longer benefits your setup.
What spec should SA buyers prioritise on a ATX 3.1 PSU?
Prioritise the spec that matches your real workload, then efficiency and warranty. For local buyers, a model with a longer warranty and the correct connectors for current hardware is the safest long-term pick.
3.1 PSU models on the listed specs at Evetech and size to your real build, not the biggest number on the shelf.