Best PSU For i9-12900K (Core i9-12900K Recommended Power Supply)

In the quest to find the best PSU for i9-12900K, we did a lot of research and found that it is imperative to have a high wattage unit. This will not only ensure your gaming PC can run at top performance but also last longer. It’s important to take into account what you’ll need in terms of power draw before purchasing an expensive component that may not meet your needs. 

For example, if you want a gaming computer with multiple GPUs, you’ll need 300 watts or more. On the other hand, all you really need is one gaming GPU and some overclocking capability from time to time, then 150 watts should do just fine. The need for a high-quality power supply has never been greater.

The Intel i9-12900K is a powerhouse of a chip with overclocking potential that can take your computer to the next level. To get the most out of this processor, you’ll need a reliable PSU that will keep up with all those demands and do so without breaking down at any point in time. That’s where we come in! 

In today’s buying guide, we’ll be going over some of the best PSUs available on the market for this particular model. As well as giving you an idea about what features make these models stand out from one another. 

The power supply unit (PSU) is a crucial part of your computer, as it provides the energy to power all internal components, including the compatible i9-12900K motherboard, hard drive, and graphics card. The best PSU for i9-12900K will be one that has enough wattage to provide adequate power without overheating or shorting out. 

While there are many factors involved in selecting a PSU, here are some PSUs that you should consider when buying one for your build:

list of top rated Best PSU For i9-12900K

  1. CORSAIR AX Series, AX1000
  2. EVGA Supernova 1000 T2
  3. Seasonic PS SSR-700TL
  4. Thermaltake Toughpower iRGB
  5. CORSAIR HXi Series, HX750i
  6. SilverStone Technology SX800-LTI 800W

1. CORSAIR AX Series, AX1000, 1000 Watt Fully Modular Power Supply

CORSAIR AX Series Power supply

The CORSAIR AX Series power supplies are fully modular and 80+ Titanium certified for the highest level of efficiency and performance. The 135 mm cooling fan with original FDB Bearing provides Low-Noise operation even at most needed loads. 

At the same time, Zero RPM fan mode allows the PSU to stay virtually silent at low to medium loads. Three-color customizable fascinating side designs let you choose your PSU’s way to meet your rig. CORSAIR’s AX Series power supplies are 80+ Titanium Certified for the highest level of efficiency and execution. 

Zero RPM fan mode ensures near-silent operation at low to medium loads, while world-class electrical performance provides incredibly stable voltages and ultra-low ripple noise. Are you looking for a power supply that is both powerful and efficient? Look no further than the CORSAIR AX1000. 

This 1000 watt power supply is 80+ Titanium certified, meaning it delivers consistent quality power while using minimal energy. It also features 100% Japanese capacitors, ensuring long-term reliability. With voltage regulation and ripple/noise minimized, you can be sure your system will run stable and overclocked to its full potential. 

So don’t waste any more time – order your AX1000 today! The AX1000 has excellent voltage control and insignificant ripple/noise, assuring the most leading quality and most compatible power possible. With 100% Japanese 105°C capacitors, the AX1000 offers unwavering reliability and long-term stability

2. EVGA Supernova 1000 T2, 80+ Titanium 1000W Power Supply

With these features, the Supernova 1000 T2 can be your best friend in rugged power. It will never let you down! Never worry about outages again with this 80 PLUS Titanium-certified PSU. Besides running cool and silently because of its EVGAs 140 mm Double Ball Bearing fan, it has heavy-duty protection, including OVP, UVP, OCP, OPP, SCP, and OTP. 

Say goodbye to a failing system not caused by a lack of sufficient PSU wattage. The EVGA 1000 T2 will provide you with nothing short of cutting-edge power. With its high efficiency, massive capacity, all-new ECO mode, and stellar protection, this is the PSU that has it all.  

When our engineers went looking for ways to improve on the EVGA 8+2 P1000 G3+, they made sure every little detail was fine-tuned to perfection, including your carefree installation experience. 

That’s why all cables are now hard wired with either 24­pin ATX ­12V motherboard ­4/8pin EPS ­6/8pin PCI Express, so there’s no more pesky cable clutter robbing you of precious airflow or length! 

The EVGA Supernova T2 is the best PSU that you’ll find for your Intel Core i9- 12900K processor. We know that this power supply is perfect for gamers or anyone who wants to have a high-performance machine in their home with an amazing efficiency of 94%. 

The ECO mode on these power supplies will turn off all fans at low loads, making them ideal for noise-sensitive environments. You can also use the ten-year warranty with confidence because it backs up its products with 100% Japanese capacitor design, EVGA customer service dedication, and an award-winning 80+ Titanium rating.

3. Seasonic PS SSR-700TL Prime FANLESS TX-700 700W ATX PSU

Usually, you would expect back-venting to be a bad thing for PSUs because that’s what allows them to dissipate heat. However, Seasonic has proven that it can work as an asset by implementing intake/exhaust style vents on the housing and casing of their Prime FANLESS 80+ Titanium Fully Modular PSU. 

This allows for more power efficiency since the cooling will always be going out instead of in. Not to forget mentioning how great this unit is at preserving your eardrums with its dead silent operation! With all of these amazing features, it is easy to see why Seasonic PS SSR-700TL Prime is the best PSU you can get on the market today. 

Not only is this product unparalleled in performance, but its sleek design exemplifies class and style that are impossible not to admire. With a great warranty coverage, the affordable price point for today’s standards, and the small form factor making installation trouble-free, what more could you ask for? 

Stop wasting your time looking at inferior products just because they’re cheaper! The Seasonic PS SSR-700TL is a fashionable PSU that can easily put to shame many high-end active cooling PSUs. It has the best combination of efficiency, performance power delivery, and it allows you easy access with its ability to be fully wired as needed. 

As well as granting unparalleled security for your personal computer through the use of its built-in proprietary protection safeguards such as overcurrent and under voltage protections.

4. Thermaltake Toughpower iRGB Plus 1050W Power Supply

The Thermaltake Toughpower PSU supply offers a digital platform with a new circuit design, PFC & LLC digital controllers, and 32 Bit MCU. This effective power supply appears with 16. 8 million RGB LED colors plus 12 addressable RGB LEDs and 7 illumination choices at your fingertips. The flat all-black wires, low-profile even black chains improve cable routing with all-black connectors for an unbiased look. 

The 100% all Japanese 105°C capacitors offer the highest stability and reliability. Delivering on its Toughpower name, this Thermaltake PSU provides 1050W of power with 16.8 million colors and 12 addressable RGB LEDs. 

The Digital RGB LED Smart Zero Fan ensures quiet operation, while the 100% Japanese capacitors offer reliability and stability. Flat all black cables and connectors provide a discreet look, making your system look great inside and out. 

With 80 PLUS Platinum certification, individually sleeved cables, and flat cable design, this PSU is not only aesthetically pleasing, but it’s also highly efficient and reliable. If you’re looking for a top-of-the-line power supply that features impressive performance and smart digital controls, then the Toughpower is the perfect option. 

The Toughpower Smart Zero Fan is powered by a 32 Bit Microcontroller Unit (MCU) from Microchip, which means that it has the ability to digitally control devices and processes like automobile engine control systems, office machines. 

The 100% High-Quality Japanese Caps ensure that only the finest power components go into this product. So you get great quality at an even greater price. If you are looking for high performance with tons of features, look no further than this brilliant Thermaltake Power Supply.

5. CORSAIR HXi Series, HX750i, 750 Watt Digital Power Supply

Best of both worlds. The CORSAIR HXi Series, HX750i, has all the efficiency and low-profile style you want and need in a power supply – plus the modular design is easy to assemble. Ten years? That doesn’t mean we can’t go that long with your system before having to switch out your power supply again! 

The CORSAIR HXi Series offers 80 PLUS Platinum certified efficiency and enough continuous power to keep your computer stable. In addition, it provides semi-modular cables for easy installation, efficient flat black design with low-profile modular cables for improved airflow, digital controller efficiencies up to 93%, Zero RPM mode for fanless operation at low loads, and outstanding noise reduction – all backed by Corsair’s ten-year warranty. 

The HXi Series 750 Watt power supplies from CORSAIR are a great choice for your PC. They give you tight voltage control, nearly inaudible operation, and an entirely modular cable set that lets you build the perfect system. 

With this much capability at such a reasonable price, it’s easy to see why these models have been so popular with enthusiasts who need high performance. HXi Series power supplies come equipped with Japanese 105°C capacitors and Zero RPM Fan Mode to provide low-noise performance and increased ventilation. 

With up to 86% efficiency, they also help keep your energy costs down by running i9-12900K CPU cooler than traditional 80 PLUS Silver or Bronze-rated equivalents!

6. SilverStone Technology SX800-LTI 800W Power Supply

Looking for an 800 Watts power supply that’s built to last? Look no further than the SilverStone SX800-LTI. With 24/7 continuous power output and 80 PLUS Titanium certification, this power supply is perfect for powering high-end systems. 

Plus, with Japanese capacitors and a silent 120 mm fan, you can be sure your system will run quietly and smoothly. And with 100% modular short cables and SFX-L form factor, it’s easy to install in even the tightest spaces. So don’t wait – order your SilverStone SX800-LTI today! 

The SilverStone Technology modular power supply is here to provide reliable and efficient power for your small form factor computer. With 800W of continuous power output and a single +12V rail with 66A, this PSU is more than capable of powering even the most demanding systems. 

The 80 PLUS Titanium certification ensures high-efficiency operation, while the 120 mm fan keeps noise levels down. In addition, 100% short modular cables make installation a breeze, and the SFX-L form factor means it will fit in even the smallest cases. 

So don’t go without the power you need – get the SilverStone modular power supply today! The SX800-LTI is a result of the company’s “smart power supply” technology that delivers 80 PLUS Titanium efficiency and innovative power supply design for maximum concern protection. 

Their semi-fanless operation produces 18 dBA with minimum fan noise while also providing you with an ultra-quiet continuous fan mode option. This means it never goes over 18 dB at any time to give your computer a pleasant operating environment which is important for not only vision but to maintain a productive workflow. 

Performance-wise, it comes with 12 SATA connectors for expandability options, two 8/6 pin PCI-e connectors, one 24/20 Pin motherboard connector, and eight 4-Pin peripheral connectors.

Recommended PSU For i9-12900K Buying Guide:

When it comes to picking the right power supply for your PC, you have a lot of options. You’ll want to take into account how much wattage and voltage are needed by all components in your system, as well as features like overvoltage protection and Undervoltage protection. This will help ensure that your expensive parts are safe even if something goes wrong with electricity or other components in your computer.


A single-rail power supply will provide all of its output to any component connected, regardless of whether it’s via a connector or cable. If there was ever an accident and one rail failed, then you can bet that +12V would be heading into your components like crazy. That could cause some serious damage in the event something wasn’t built correctly with high enough capacity resistors (and capacitors).


The 80 PLUS Bronze certification ensures that your power supply can deliver at least 82% efficiency when under 20% load. On the other hand, an 80 PLUS Gold certified unit will give you up to 90%, meaning it is less susceptible to lost energy and wasted resources during OPS. 

The difference between these two certifications mainly comes down to whether or not they meet their requirements for low drain rates (1%). As well as operating temperatures below 35 degrees Celsius or 95 Fahrenheit – which means most people won’t need either one since both types are more than adequate in meeting our needs!


The fan in your power supply is one of the most important parts. It helps to keep all internal components cool, avoid heating up, and function at their best! However, if you have a noisy or slow-moving fan, then there’s something wrong with how it’s installed. 

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