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Best PSU for Intel Core i9-13900KS

looking for the best PSU to power your 13900KS? You're in the right place.

Updated: Oct 18, 2023 11:48 am
Best PSU for Intel Core i9-13900KS

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The Core i9-13900KS is said to be the world’s fastest gaming CPU, Intel promised 6GHz out of the box with the 13900KS, which piqued many people’s attention. However, this CPU is a power-hungry beast and needs a small generator to run it. So what’s the best PSU for intel Core i9-13900KS?

Now Read: Best motherboard for Core i9-13900KS

The 13900KS is going to be the world’s fastest gaming CPU, at least until MD responds with its X3D CPUs, so we’re going to need some pretty substantial hardware to support the Core i9 in its efforts. Here’s the best power supply for the Core i9-13900KS.

Due to the high TDP of the 13900KS, you’ll also need a substantial CPU cooler, you can find one here: Best CPU cooler for 13900KS.

Best PSU for Core i9-13900KS: Top pick

This is the top pick we currently have for the best PSU for Intel Core i9-13900KS.

What is the TDP of the Core i9-13900KS?

The TDP of the Core i9-13900KS surprisingly stands the same as the 13900K. The TDP for the 13900KS is 253W. All this despite having a 200MHz higher boost frequency. That’s the magic of CPU development, they just get better and better.

The reason we have such a powerful PSU paired is that we’re thinking about the entire system, not just one component. You’re not exactly going to be running with a GT 1050 if you have a 13900KS installed are you?

Do I need a new power supply for the 13900KS?

It all depends entirely on the system you have constructed, or, if you’re coming from the 12900KS then you probably don’t need to upgrade.

The biggest reason to upgrade your PSU is when you’re upgrading your GPU, as GPUs are the most power-hungry components of a PC. With that being said, the 253W TDP of the 13900KS is still significant and may very well be enough to tip your system over the edge if you’re upgrading from a low-end 12th or 11th-generation CPU.

The 11th-generation upgrade would, of course, require a new motherboard.

Best Power supply for Intel Core i9-13900KS

Here we will outline the best power supply we have selected for the Core i9-13900KS

ASUS ROG Thor 1000W Platinum II

Runner up RTX 4090 PSU
ASUS ROG Thor 1000W Platinum II

ASUS ROG Thor 1000W Platinum II

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80 PLUS Platinum



  • Attractive design
  • Fully-modular
  • 1000W
  • Very pricey

ASUS has been one of the best PC peripheral manufacturers for many years and is well worth consideration despite the premium price. We assure you, you get what you pay for.

The Platinum II offers an 80 PLUS platinum certification supplying 1000W total power, making it the most efficient PSU in regards to the rating. this, however, also makes it very expensive. The Thor is built with 100% Japanese capacitors and other premium components to achieve this 80 Plus Platinum Certification.

To keep temps at bay, the Thor features “ROG Thermal Solution”. This is a new technology from ASUS, ingeniously using the power supply casing as a heatsink, paired with a 135mm fan to help keep the temperatures under control.

The Thor also features the new 12VHPWR connector, which enables you to power a new 40 series GPU effortlessly, with the wattage to also power the 13900KS alongside it.

Final word

So, we rank the Thor as the best PSU to have for the Core i9-13900KS. It’s a matter of system power, we’re using how high-end the CPU is to determine what sort of hardware you might have in your system.

Since the 13900KS is top of the line, we assume the same about GPU, motherboard, and RAM. The ROG Thor gives the wattage, stability, and efficiency you most likely need.

Jack is a Tech and News Writer who has a vast and proficient knowledge of CPUs, Motherboards, and Computer technology.

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