Quick Answer

The Intel Core Ultra 7 265K pulls around 125W base and spikes to roughly 250W under all-core load, so a quality 750W 80+ Gold PSU is the safe sweet spot for most builds. Pair it with an RTX 4070 Super or 4080 Super and you'll have headroom plus loadshedding-friendly efficiency.

Real-World Wattage Numbers

In gaming workloads the 265K typically sits between 90W and 160W depending on the title. Productivity tasks like Blender, Handbrake or compiling code push it harder, with sustained pulls of 220W to 250W when boost clocks hold. Idle draw is impressively low thanks to the new tile architecture, often under 25W, which helps your overall system efficiency during long study sessions in res. Compared to the 14700K, the 265K gives you similar gaming numbers at noticeably lower wattage, which means less heat dumped into your case during a Highveld summer.

PSU Wattage Recommendations

For a 265K paired with a mid-range GPU like the RTX 4070, a 750W 80+ Gold unit is plenty. Stepping up to an RTX 4080 Super or 4090, I'd recommend 850W to 1000W to handle transient spikes cleanly. Skimping on the PSU is the fastest way to cause random reboots, so don't cheap out, especially with our unstable Eskom voltage. Look for ATX 3.1 compliance because that standard is built specifically to handle the brief power spikes modern GPUs and CPUs throw at the rail.

Cooling and Loadshedding Considerations

A 240mm or 280mm AIO keeps the 265K under 85C in extended runs. Air coolers like the Noctua NH-D15 or Deepcool AK620 also do the job if you prefer no pumps. If loadshedding hits mid-render, a UPS rated at 1500VA or higher gives you time to save and shut down safely, which protects both the CPU and PSU from dirty restart power. Buying CPU, PSU and cooler together from Evetech ships them with local warranty and same-week delivery to most SA suburbs.

Frequently Asked Questions

Will a 650W PSU run the Core Ultra 7 265K?

With a modest GPU like an RTX 4060 yes, but you're cutting it fine. I'd rather spend a bit more on a 750W unit so transient spikes don't trip protection.

Does the 265K need liquid cooling?

Not strictly. A premium dual-tower air cooler handles it well. Liquid cooling just gives quieter operation and slightly better sustained boost in long workloads.

How does the 265K compare to the 14700K on power?

The 265K is more efficient per watt and runs noticeably cooler under similar loads, which is a big win for SA builders with poor case airflow or hot summers.

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