Sizing a power supply around the RTX 4060 is one of the easiest places for South African builders to either overspend or cut a corner that bites later. The honest answer depends on the whole card-plus-CPU draw, transient spikes, and headroom for a quiet, efficient fan curve.

Quick Answer

A 850W unit is comfortably enough for a single-GPU RTX 4060 build. The card's real-world draw plus a mainstream CPU sits well inside that figure, with the recommended sizing around 550W to 650W for comfortable transient headroom.

What 850W Actually Covers

A RTX 4060 typically pulls between roughly 120W and 200W under load depending on model and overclock. Add a modern 6 to 16 core CPU at 65W to 170W, plus 30W to 60W for drives, fans, RGB and the board, and a 850W supply with an 80 PLUS Gold rating leaves the right cushion. Aim to sit around 50 to 70 percent load at the wall for the best efficiency and the quietest fan behaviour.

Transient spikes matter more than the average figure. Modern GPUs can briefly draw well above their rated power, so an ATX 3.1 unit with a native 12V-2x6 connector handles those millisecond spikes without tripping protection. If your 850W choice is ATX 3.1 rated, the RTX 4060 is well looked after.

Pick Quality Over Raw Wattage

Wattage is only half the story. A reputable 850W Gold unit beats a no-name 1050W supply on rail stability, ripple and protection circuitry. For an SA build, prioritise a known brand, a 7 to 10 year warranty, and the right cable count for your RTX 4060. Buying once at the right capacity is cheaper than replacing a unit that sags under load and corrupts a long gaming session.

FAQ

Is 850W really enough for the RTX 4060?

For a single-card build, 850W in a quality Gold or better unit is comfortably enough. The card and a mainstream CPU stay inside that budget with room for transient spikes when the supply is ATX 3.1 rated.

What wattage does the RTX 4060 need at minimum?

The practical recommendation lands around 550W to 650W for healthy headroom and quiet fans. Going lower can work on paper but leaves little margin for spikes, future upgrades, or a power-hungrier CPU.

Does ATX 3.1 matter for this build?

Yes. ATX 3.1 units handle the brief power excursions modern GPUs produce, and the native 12V-2x6 connector means no adapter clutter. It is the safer choice for a RTX 4060 that you plan to keep for years.

Match a quality 850W ATX 3.1 unit to your RTX 4060 build, currently stocked at Evetech, and size it for 50 to 70 percent load for the quietest, most efficient result.