Best PSU for i9 13900K 2024

Our picks for the best power supply unit for i9 13900k

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Choosing a shoddy power supply is the last thing you should do when building a setup. It doesn’t stand to reason why a PC builder would spend all their bank on a high-end CPU, motherboard, and GPU, only to skimp out on the most crucial aspect of your PC. And when you’re running an Intel Core i9 13900K, you certainly can’t skimp out in the power supply department.

The i9 13900K consumes a peak wattage of around 253W on max load, despite its base TDP being rated at just 125W. Bear in mind, that’s just only the CPU drawing this much power from the PSU and motherboard. So, you really need to check out our top power supply picks if you really don’t want any performance throttle when running any CPU-intensive applications or games.

Which Power Supply Do I Need To Run An Intel Core i9 13900K?

Despite its claimed peak TDP of 125W, the Intel Core i9 13900K can easily draw a peak Wattage of around 250 watts from your PSU. That doesn’t account for the GPU, motherboard, hard drive, M.2 SSD, or case fans installed in your PC. Add those up and get a top-of-the-line GPU–say the RTX 4090, and you’re expecting a total power draw of anywhere between 750–1000 watts.

If you’re using a mid-tier GPU with a power draw of anywhere between 170-250W, then you should certainly go for a 750+ Wattage PSU. Bear in mind, you should also leave a headroom of 100–150 watts for adequate performance and efficient power delivery. Otherwise, your components and CPU might not operate at their full potential, or even worse–the PSU could shut off from the overall load.

Best High-End PSU: EVGA SuperNOVA 1600 G5

EVGA SuperNOVA G2 1600W

Connector Type

24-pin

Output Wattage

1600

Form Factor

ATX

Pros
  • Tons of safety features
  • 10-year warranty
  • Small footprint
  • 80 Plus Gold Rating
Cons
  • Doesn’t come with a standby mode.

You can’t go wrong with the EVGA 1600 G5. It provides ample headroom for your i9 13900K and GPU. Featuring an 80 Plus Gold rating, this PSU offers an average efficiency of 91% on any load. To take the brunt of the immense power draw, you get some high-quality and robust Japanese capacitors. And you can forget about any electrical damage–owing to safety features like OCP, SCP, and OVP.

Runner-Up PSU: Seasonic SSR-1000TR Prime Titanium

Seasonic SSR-1000TR Prime Titanium

Compatible Devices

Personal Computer

Output Wattage

1000

Form Factor

ATX12V

Pros
  • Micro-tolerance Load Regulation
  • 80 Plus Titanium
  • Hybrid Cooling System
  • 12-Year Warranty
Cons
  • Extremely Expensive

Seasonic has some nifty load-regulation features up its sleeve. This PSU can regulate output voltage below 0.5%, keeping the PSU in optimal condition at relatively high-load scenarios. Under full load, the PSU maintains an efficiency of 90%. And the 1000W rating provides ample headroom for your i9 13900K to operate at its full capacity while also paired to a beefy GPU. And there’s no room for complaining, as you get a 12-year warranty with this PSU.

Budget-Friendly Option: EVGA 750 BQ

EVGA 750 BQ

Output Wattage

750

Cooling Method

Air

Connector Type

24-pin

Pros
  • Cheapest 750W PSU
  • Great Value
  • 80 Plus Bronze
Cons
  • Semi-Modular
  • Not ATX 3.0 compliant
  • Doesn’t have a zero fan-mode

The EVGA 750 BQ is alluring for its neat price point. It gives you your money’s worth and is perfect for running a mid-range GPU paired with an i9 13900K. You get an 80 Plus Bronze-rated power supply. While it’s not the best when it comes to efficiency scores, it can still handle tight CPU workloads and heavy gaming sessions with ease. However, it does suffer from semi-modularity. The 24-pin motherboard and 8-pin CPU connectors are directly attached to the PSU.

In Summary

That pretty much wraps up our top power supply picks for the Intel Core i9 13900K. While this CPU apparently draws more than meets the eye, you can withstand the raw power of it using any of our top picks without breaking a sweat.

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