Top 7 Best Mini ITX PSU In 2022

Mini ITX form factor cases are great for small builds, but the lack of space inside can make it tough to find a good power supply that will fit. I know how frustrating it can be when you’re trying to build a small PC and you can’t seem to find a power supply that’s both mini ITX-sized and high wattage.

Check out our roundup of the best Mini ITX PSUs for small builds! We’ve got options for everyone, from budget-minded shoppers to those who want the very best performance.

1. Seasonic FOCUS SGX-650 Power Supply

Seasonic FOCUS SGX-650 PSU is a great choice for small builds. It is fully modular so you can use only the cables you need which means less energy is wasted during power conversion. It also has a premium hybrid fan control for unsurpassed silent performance in Fanless Mode.

Fit Size with Enough Power Output

This power supply has a great form factor for small builds. It is fully modular so you can use only the cables you need which means less energy is wasted during power conversion.

Unique Fanless Mode

It has a great form factor for small builds and also features a unique fanless mode. Due to the fanless mode, you can also use it in silent mode which is great for small builds that need to be quiet.

Highly Efficient

This PSU is also highly efficient as it is 80+ Gold certified. This means that less energy gets wasted during power conversion which helps to cut down on your electricity usage.

Why Do I Want To Recommend This PSU?

I like this PSU because it is fully modular. This means that I only have to use the cables that I need which helps to reduce clutter and makes it easier to route the cables for better airflow. I also like that it is 80+ Gold certified because it means that less energy is wasted during power conversion. Overall, I think this is a great PSU for small builds.

  • It feels high quality.
  • The cables are very easy to work with compared to some others.
  • Fully modular means I don’t have to figure out how to hide cables.
  • Mounted easily in my case with no problems.
  • Some cables can’t be removed.

2. Corsair SF Series 750 Watt Power Supply 

Corsair SF Series 750W PSU is a great choice for powering high-performance small form factor PCs. It’s a fully modular design and less excess heat and lower operating costs. The cable management is also simple since it’s done with flexible para cord-sleeved cables.

Great Power Supplier

It can provide your system with the power it needs to stay safe and cool. With a bit of extra overclocking, you can get more out of your system and enjoy a higher level of gaming or other activities.

Rifle Bearing with Quiet Operation

It comes with a rifle bearing that is known for its quiet operation. You won’t have to worry about your system being too loud and disturbing others. Plus, this can also help to prolong the life of your PSU.

Fully Modular with High-Level Efficiency

This power supply is fully modular, which means that you can easily add or remove cables as needed. This can help to improve airflow and prevent cable clutter. Additionally, a high level of efficiency can help to reduce your energy costs.

  • It’s fully modular.
  • Dead silent on low to medium loads
  • The ends that plug into the PSU are very tight.

3. EVGA SuperNOVA 550 GM Power Supply

EVGA SuperNOVA 550GM is a great choice if you’re looking for a powerful and efficient PSU for your mini-ITX rig. It’s fully modular, so you can easily install it in your system, it’s very quiet and the protections are top-notch.

Excellent Efficiency With Enough Power Output

It’s rated for up to 80 Plus Gold efficiency. That means you get up to 92% efficiency under typical loads, saving your money on your energy bill. And, with a maximum power output of 550 watts, you’ll have plenty of power for even the most demanding systems.

Modular Design With Protection System

The modular design of this PSU makes installation easy, and the included protection system keeps your system safe from overvoltage, under-voltage, and short circuits.

Quiet and Reliable

With a double ball-bearing fan, the SuperNOVA 550GM is designed for long-term reliability and quiet operation. Due to this, you can be sure that your system will be running quietly and smoothly for years to come.

  • Quiet and handles my CPU and GPU without any problem.
  • It’s very efficient.
  • The cables are a little short as compared to the usual PSU.

4. Corsair SF Series 450 Watt Power Supply

Corsair SF Series 450W is an SFX form factor power supply that is fully modular. This PSU guarantees high efficiency and lower operating costs. This power supply has very great-looking results and comes with multiple demanded features. That is why it’s known as one of the best Mini ITX PSUs in the market.

Low Noise Operation

This power supply has a Zero RPM Fan Mode. When the power load is low or medium, the fan doesn’t even spin, making it virtually silent. This is a great feature if you’re looking to build a quiet PC.

Great Power Output

This PSU can output 450 watts of power. This is enough to power most mid-range gaming PCs. Due to this great power output, you can also use this PSU for cryptocurrency mining rigs.

High Efficiency With Reliability

This power supply is 80+ Gold certified, meaning that it is highly efficient. This also means that the parts used in this PSU are of high quality, resulting in increased reliability. Additionally, it gives you peace of mind knowing that your PSU can handle even the most demanding loads.

  • Completely silent on my low-wattage build.
  • It’s very small and light.
  • The fan stops, you can’t rely on the PSU to provide airflow to the system.

5. Enermax Revolution SFX 550W Power Supply

Enermax Revolution SFX 550W PSU is a powerful and compact SFX form factor power supply that is perfect for small but high-performance system builds. It features smart semi-fanless control for fanless operation under 30% load, 100% 105°C Japanese electrolytic capacitors, full modularity, and 100% flexible flat cables.

Excellent Power Delivery

This power supply is perfect for gaming and other high-performance applications. It is able to deliver up to 550 watts of power. With this, you can even power multiple graphics cards in SLI or Crossfire mode.

High Compatibility

This PSU is also compatible with ATX cases, thanks to the included SFX-to-ATX adapter bracket. Moreover, this can also help you save space inside your case.

Super Efficient With New Design

It’s designed to be one of the most efficient power supplies on the market. Thanks to its 80 PLUS Gold certification, this PSU delivers up to 90% efficiency. To further increase its efficiency, it has a semi-fanless mode which reduces the fan speed to under 30% load.

Why Do I Like This Power Supply?

I really like this power supply because it is small, but still delivers a lot of power. I also like that it is modular and has 100% flexible flat cables. This makes it much easier to install and keeps the inside of my case looking clean.

  • It gives an excellent power supply.
  • It has very good build quality.
  • Not good for the Phanteks shift.

6. SilverStone Technology SST-SX700-G 700W PSU

SilverStone Technology SST-SX700-G is a 700W SFX fully modular power supply with an improved 92mm fan and Japanese capacitors. It supports the standard SFX form factor. All Japanese capacitors are used in its construction and it has 100% modular cables with flexible flat arrays.

Power Output With Rail

It’s rated for 700 watts of continuous power output at 50°C operating temperature. The +12V rail is rated for 58.3A (700W), and the +5V rail is rated for 30A (150W). The combined +12V and +5V DC output power is limited to 140W. The minimum load on the +12V rail is 4A. The power supply will shut down if the load on the +12V rail falls below 3A.

Efficient And Silent

This PSU is 80 plus gold certified for high efficiency. The silent running 92mm FDB fan has a minimum noise level of 18 dBA. Due to its high efficiency and low noise level, you can use this PSU for your gaming PC or HTPC.

Modular Design

The power supply has a modular design with all cable wire coming with flexible flat arrays. The fully modular design helps you to use only those cables which are required for your system. This reduces the clutter inside the case and improves airflow.

Safety Features

The power supply has all the necessary safety features like overvoltage protection, under-voltage protection, short circuit protection, and overcurrent protection.

  • Great quality of power supply.
  • It has great protection features.
  • It simply doesn’t power high-end components sufficiently.

7. Fractal Design Ion SFX 650G – 80 Power Supply

The Fractal Design Ion SFX 650G is a high-performance power supply that’s been designed for small form factor builds. It’s certified, meaning it features fully modular cables for easy installation. It also has a silent 120mm fan with FDB bearings and a Zero RPM mode for even quieter operation.

Quality Electrical Output

It features tight voltage regulation and low ripple for great electrical output quality. Due to this, we can expect less stress and heat on our components, as well as increased longevity.

Fully Modular Design and Efficient

With an efficiency rating of 80 Plus Gold, it’s a great option for those looking to build a high-performance, yet power-efficient small form factor PC. The fully modular design also helps reduce cable clutter and makes installation a breeze.

Silent Operation

It features a silent 120mm fan with FDB bearings, as well as a Zero RPM mode for even quieter operation. This is great for those who want a quiet PC, or for use in environments where noise levels need to be kept to a minimum.

  • It has been an excellent PSU.
  • Great electrical output quality.
  • Some times the noise increase.

Things To Consider While Buying Best Mini ITX PSU

It’s time to look at some elements to consider while purchasing a mini ITX PSU after seeing the best one on the market:

1. Wattage

The first thing to look at while buying a PSU is the wattage. It must be high enough to power all the components in your system. If you are not sure about the wattage, you can use a PSU calculator to calculate it.

2. Modular

The second thing to look at is whether the PSU is modular or not. A modular PSU is always better as it helps reduce clutter and makes installation easier.

3. Efficiency

The third thing to look at is the efficiency of the PSU. Higher efficiency means less heat and less power consumption. Therefore, always choose a PSU with a high-efficiency rating.

4. Low Noise Operation

The last thing to look at is whether the PSU is silent or not. A silent PSU is always better as it helps reduce noise levels in your system.

Now that you know the things to look for while buying a mini ITX PSU, go ahead and choose the one which best suits your needs.


Now that you’ve seen the best mini ITX PSUs on the market, as well as what to look for while buying one, it’s time to make your decision. Choose the PSU which best suits your needs, and you’ll be sure to have a great experience with your small form factor build.


Q: What PSU do I need for a mini ITX?

A: The wattage you need will depend on the components in your system. Use a PSU calculator to calculate the wattage you need.

Q: What is the perfect mini ITX PSU for gaming?

A: The perfect mini ITX PSU for gaming would be one with a high wattage and good electrical output quality.

Q: Is SFX PSU for ITX?

A: Yes, SFX PSUs are designed for small form factor builds.

Q: What’s the difference between SFX and ATX PSU?

A: The main difference between SFX and ATX PSUs is size. SFX PSUs are smaller, making them ideal for small form factor builds. ATX PSUs are larger and heavier, making them better suited for full-size tower builds.

Q: What is the best modular mini ITX PSU?

A: The best modular mini ITX PSU would be one with a high wattage, good electrical output quality, and a fully modular design. This would help reduce clutter and make installation easier.

Q: What is the best silent mini ITX PSU?

A: The best silent mini ITX PSU would be one with a silent 120mm fan and a Zero RPM mode for even quieter operation. This would help reduce noise levels in your system.

Q: Are SFX PSU good?

A: Yes, SFX PSUs are a great option for small form factor builds. They are typically smaller and lighter than ATX PSUs, making them easier to install in small cases. Additionally, they often have higher wattage and better electrical output quality.

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