When building a Mini ITX setup, the power supply you choose can make or break your experience. Compact yet powerful, these units not only provide the necessary energy but also contribute to your system’s overall efficiency and aesthetics. From fully modular options to high-capacity solutions, there’s a variety tailored to meet your needs. Let’s explore the top contenders that can elevate your compact build to the next level.

Apevia ITX-PFC500W Mini ITX/Flex ATX 500W Fully Modular Power Supply

If you’re building a compact Mini ITX setup and need a reliable power source, the Apevia ITX-PFC500W is an excellent choice. This fully modular power supply delivers 500W, ensuring your system runs smoothly. With a range of connectors, including a 20+4 pin main power and dual PCIe options, it supports various components seamlessly. Its forced air ventilation with a 40mm fan keeps your setup cool. Plus, built-in protections like overvoltage and short circuit protection add peace of mind. Measuring just 160mm x 73.66mm x 35.5mm, it fits snugly into tight spaces, making it perfect for your Mini ITX build.

Best For: Those seeking a compact and efficient power supply for their Mini ITX builds with reliable performance and modular flexibility.

Pros:

• Fully modular design allows for customizable cable management and reduced clutter.
• Multiple protection features ensure safe operation and longevity of components.
• Compact size fits easily into tight spaces, making it ideal for small form factor builds.

Cons:

• 40mm fan may be less effective in cooling larger builds with higher power demands.
• Limited output on certain voltage rails may restrict upgrades or high-performance components.
• The maximum power of 500W may not be sufficient for more demanding setups.

Apevia SFX-AP500W Mini ITX Solution/Micro ATX/SFX 500W Power Supply

The Apevia SFX-AP500W Power Supply stands out as an excellent choice for those building compact Mini ITX or Micro ATX systems. With a power output of 500W, it’s designed to fit snugly in tight spaces, measuring just 125mm x 100mm x 63.5mm. You’ll find multiple connectors, including a 20+4pin main power, 8pin CPU, and 6/8pin PCIe, offering versatility for various setups. Remember, proper cable connections are crucial for operation; it won’t power on by simply plugging it in. This power supply is a reliable option that meets the demands of modern compact builds.

Best For: Those seeking a compact and efficient power supply for Mini ITX or Micro ATX builds.

Pros:

• Compact size allows for easy installation in tight spaces.
• Versatile connectors support a variety of motherboard and component configurations.
• Reliable 500W output meets the power requirements of modern systems.

Cons:

• Requires proper cable connections to function; cannot be powered on by simply plugging in.
• Limited to SFX form factor, which may not fit all cases.
• May not have enough power for high-end graphics cards or multi-GPU setups.

Cooler Master V850 SFX Gold Modular Power Supply

Designed specifically for gamers, creators, and professionals, the Cooler Master V850 SFX Gold Modular Power Supply stands out with its impressive 850W capacity and 80 Plus Gold efficiency. This power supply features a compact ITX design, making it perfect for mini builds. With a 90° 12VHPWR PCIe 5.1 connector, it ensures improved durability. The fully modular design not only reduces clutter but also enhances airflow. Plus, the 92mm Fluid Dynamic Bearing fan keeps things cool. Coupled with a 10-year warranty and high-quality Japanese capacitors, you can trust this powerhouse to deliver reliable performance and efficiency for your setup.

Best For: Gamers, creators, and professionals looking for a compact, high-performance power supply with reliable efficiency.

Pros:

• High Efficiency: 80 Plus Gold certification ensures effective power transfer and reduced energy costs.
• Compact Design: ITX form factor is ideal for mini builds, saving space without sacrificing power.
• Durable Components: Includes high-quality Japanese capacitors and a 10-year warranty for long-lasting performance.

Cons:

• Limited Power Output: While 850W is sufficient for many builds, it may not support extreme setups with multiple GPUs.
• Potentially Overkill for Casual Users: Gamers with less demanding systems may find this power supply offers more power than needed.
• Higher Price Point: Premium features come at a cost, making it less budget-friendly for entry-level builds.

Thermaltake SMART 600W Power Supply (PS-SPD-0600NPCWUS-W)

For those building compact yet powerful Mini ITX systems, the Thermaltake SMART 600W Power Supply (PS-SPD-0600NPCWUS-W) stands out as an excellent choice. It delivers a reliable 600W continuous output and meets Intel’s ATX and EPS standards. With 80 PLUS certification, you’ll enjoy 80% efficiency under typical loads. The power supply supports dual PCI-E connectors and features a robust +12V rail for top performance. You’ll also appreciate its industry-grade protections, including Over Power and Short Circuit Protection. Designed with high-quality components and Active PFC, it ensures long-lasting reliability, making it perfect for your build.

Best For: Compact Mini ITX system builders looking for a reliable and efficient power supply.

Pros:

• 600W continuous output ensures ample power for various system loads.
• 80 PLUS certification guarantees 80% efficiency, reducing energy costs.
• Multiple protection features enhance safety and reliability during operation.

Cons:

• Limited to 600W, which may not suffice for high-end gaming or workstation setups.
• The design may not appeal to users seeking more aesthetic options in power supplies.
• The hold-up time of 16 milliseconds may be shorter compared to some premium models.

Apevia ITX-PFC400W Fully Modular Power Supply

Apevia ITX-PFC400W Fully Modular Power Supply stands out as an ideal choice for compact Mini ITX builds, especially for users seeking efficient power management and flexibility. With a maximum output of 400W, it supports a variety of connectors, including a 20+4pin main power and 6+2 PCIE. Its cooling system features a 40mm double ball bearing fan, ensuring your components stay cool. Plus, the power supply includes essential protections, like overvoltage and short circuit protection, for added safety. Installation is straightforward, with split connectors for compatibility, making it a reliable option for your next build.

Best For: Users building compact Mini ITX systems who require efficient power management and modular flexibility.

Pros:

• Fully modular design allows for customizable cable management and improved airflow within the case.
• Compact size fits perfectly in Mini ITX and Flex ATX builds, making it ideal for space-constrained environments.
• Comprehensive safety features, including overvoltage and short circuit protection, enhance reliability and user safety.

Cons:

• The 40mm fan may not provide sufficient cooling for high-performance components under heavy load.
• Limited wattage at 400W may restrict the use of high-end graphics cards or multiple power-hungry components.
• Some users may find the installation process slightly challenging if unfamiliar with modular power supplies.

Apevia ITX-AP300W Mini-ITX/Flex ATX Power Supply

If you’re building a compact Mini-ITX system and need a reliable power source, the Apevia ITX-AP300W Mini-ITX/Flex ATX power supply is an excellent choice. With a maximum power output of 300W, it features essential connectors like a 20+4 pin main power, an 8-pin 12V connector, and multiple SATA and Molex options. Cooling is efficient thanks to a 40mm double ball bearing fan, ensuring your system stays stable. Just remember, this power supply won’t turn on with just a power cord—you’ll need to connect all cables to your PC first. Compact yet powerful, it fits well in any Mini-ITX setup.

Best For: Users looking to build a compact Mini-ITX system that requires a reliable and space-saving power supply solution.

Pros:

• Compact design fits easily into Mini-ITX setups.
• Multiple connectors available, including SATA and Molex, for versatile compatibility.
• Efficient cooling with a 40mm double ball bearing fan helps maintain system stability.

Cons:

• Maximum output of 300W may not be sufficient for high-performance components.
• Requires all cables to be connected to power on, which can be inconvenient.
• Limited to a smaller form factor, which may not suit larger builds.

FSP Mini ITX 450W Power Supply (FSP450-50SAC)

The FSP Mini ITX 450W Power Supply (FSP450-50SAC) stands out as an excellent choice for users building compact systems that prioritize energy efficiency without the need for high gaming performance. With an 80 Plus Bronze certification, it ensures reliable power delivery while keeping energy consumption low. This non-modular power supply is compatible with Micro ATX and Mini ITX setups, fitting snugly in tight spaces with dimensions of 5 x 4 x 2.5 inches. The intelligent fan speed control and black ribbon cables enhance both performance and aesthetics, making it a top pick for small PCs. Users appreciate its effectiveness, earning it a solid customer rating of 4.1 stars.

Best For: Users building compact systems that prioritize energy efficiency for non-gaming applications.

Pros:

• 80 Plus Bronze certification ensures reliable power delivery and energy efficiency.
• Compact size (5 x 4 x 2.5 inches) fits easily into small cases like Micro ATX and Mini ITX setups.
• Intelligent fan speed control and black ribbon cables enhance performance and aesthetics.

Cons:

• Non-modular design may lead to cable management challenges in tight spaces.
• Limited power output (450W) may not support high-performance components or gaming systems.
• Warranty information is only available upon request, which may be inconvenient for users.

Thermaltake Smart 500W Power Supply (PS-SPD-0500NPCWUS-W)

For those looking to build a compact yet powerful Mini ITX system, the Thermaltake Smart 500W Power Supply (PS-SPD-0500NPCWUS-W) stands out with its 80 PLUS certification and robust 500 Watt output. This PSU ensures 80% efficiency at typical loads, keeping your system running smoothly. It complies with Intel ATX 12 Volt 2.31 and EPS 12V 2.92 standards, and features two PCI E 6+2 pin connectors for added flexibility. With industry-grade protections like Over Power Protection and Short Circuit Protection, you can trust its reliability. Plus, a 5-year warranty backs its impressive 100,000-hour MTBF.

Best For: Users looking to build a reliable and efficient Mini ITX system with a compact power supply solution.

Pros:

• 80 PLUS certification ensures 80% efficiency at typical loads, reducing energy costs.
• Features two PCI E 6+2 pin connectors, allowing for versatile GPU compatibility.
• Backed by a 5-year warranty and a high MTBF of 100,000 hours, enhancing reliability.

Cons:

• Limited to 500 Watts, which may not be sufficient for high-performance gaming rigs or power-hungry components.
• Lacks modular cables, potentially leading to cable management challenges in compact builds.
• Active PFC may not appeal to users looking for passive solutions in noise-sensitive environments.

CORSAIR SF750 Fully Modular ATX Power Supply

Looking to build a powerful yet compact Mini ITX system? The CORSAIR SF750 Fully Modular ATX Power Supply is your perfect match. With its 80 PLUS Platinum rating, it delivers massive power in a compact SFX form-factor, making it ideal for space-constrained builds. It’s ATX 3.1 compliant and PCIe 5.1 ready, ensuring compatibility with the latest hardware. The fully modular design and flexible cabling help you maintain tidy cable management. Plus, its 92mm PWM cooling fan operates quietly, thanks to fluid dynamic bearings. Trust in its 105°C rated Japanese capacitors for unwavering power and reliability in your setup.

Best For: Those looking to build powerful and efficient small-form-factor PCs with high-performance components.

Pros:

• 80 PLUS Platinum rating ensures high energy efficiency and lower electricity costs.
• Fully modular design allows for easy cable management and customization for compact builds.
• Quiet operation due to the 92mm PWM cooling fan with fluid dynamic bearings.

Cons:

• Limited wattage may not support extremely high-end hardware setups or multi-GPU configurations.
• Compact size could make it difficult to fit into certain larger cases without additional adapters.
• Price point may be higher compared to non-modular or lower-rated power supplies.

APEVIA SFX-AP400W Mini ITX Solution / Micro ATX / SFX 400W Power Supply

Compact yet powerful, the APEVIA SFX-AP400W is an excellent choice for users building Mini ITX or Micro ATX systems. With a 400W capacity, it delivers reliable performance for your components. The single 80mm thermal-sensing fan ensures efficient cooling, keeping your system running smoothly. You’ll appreciate the sleeved connectors, including a 20+4 pin main power, PCIe, and SATA options, providing versatility for your build. Measuring just 125mm x 100mm x 63.5mm, it fits snugly in tight spaces. With solid output ratings, this power supply has everything you need for a robust compact setup.

Best For: Users building compact Mini ITX or Micro ATX systems that require a reliable and efficient power supply.

Pros:

• Compact size makes it ideal for small form factor builds.
• Equipped with a thermal-sensing fan for effective cooling.
• Versatile sleeved connectors accommodate various components.

Cons:

• Limited wattage may not support high-end components or upgrades.
• Single fan design may not provide sufficient cooling for heavy loads.
• Fewer connectors compared to larger power supplies may limit expandability.

Factors to Consider When Choosing a Power Supply for Mini ITX Builds

When you’re choosing a power supply for your Mini ITX build, there are several key factors to keep in mind. You’ll want to consider power output capacity, connector compatibility, and cooling efficiency to ensure your system runs smoothly. Additionally, don’t overlook form factor size and protection features, as they play a crucial role in the overall performance and safety of your setup.

Power Output Capacity

Choosing the right power output capacity for your Mini ITX build is essential for ensuring all components run smoothly. You’ll want a power supply with a capacity that exceeds the combined wattage of your components, typically ranging from 300W to 850W based on your system requirements. For basic builds, 300W to 450W is often enough, but if you plan on using high-performance CPUs and GPUs, aim for 600W or more. Don’t forget to check the efficiency ratings, like 80 PLUS certification, as higher ratings indicate better energy conversion and less heat waste. Understanding the specific power consumption of your motherboard, CPU, GPU, and peripherals is crucial for selecting the right power supply for your needs.

Connector Compatibility

Connector compatibility is a crucial factor in ensuring your Mini ITX build functions seamlessly. First, make sure your power supply includes the necessary connectors for your motherboard, such as the 20+4 pin or 24 pin, which can be split for different board types. Check for 8-pin CPU power connectors, either as a single connector or split into 4+4 for compatibility with 4-pin and 8-pin motherboards. Don’t forget sufficient PCIe connectors (6+2 pin) to support your graphics card, especially if it needs multiple connections. Verify the number of SATA and Molex connectors to accommodate all your storage devices and peripherals. Lastly, consider the overall wattage and output specifications to meet your system’s power requirements effectively.

Cooling Efficiency

In a Mini ITX build, cooling efficiency directly impacts your system’s performance and longevity. Since space is tight, effective cooling is crucial to prevent overheating. When choosing a power supply, consider models with dedicated fans, like 40mm or 80mm, to boost airflow and keep temperatures in check. You should also weigh the benefits of passive versus active cooling methods; active cooling offers better temperature regulation under load, while passive cooling minimizes noise. Pay attention to the power supply’s design, including fan placement and ventilation, as these factors influence heat dissipation. Lastly, opt for a power supply with a higher efficiency rating, like 80 Plus Bronze or Gold, to reduce wasted energy and enhance overall cooling efficiency.

Form Factor Size

When it comes to building a compact Mini ITX system, selecting the right power supply form factor is vital for ensuring compatibility and optimal performance. Most Mini ITX power supplies, particularly SFX models, typically measure around 125mm x 100mm x 63.5mm. You’ll need to confirm that your chosen power supply fits your case’s specific mounting requirements, as different sizes like SFX or Flex ATX may be necessary. The dimensions affect airflow and cooling, so pick a unit that matches your space constraints. Many Mini ITX power supplies use a modular design for better cable management, enhancing both airflow and aesthetics. Lastly, ensure the power output, ranging from 300W to 850W, meets your components’ needs while fitting snugly.

Protection Features

Choosing the right power supply for your Mini ITX build goes beyond just size and capacity; protection features play a significant role in safeguarding your components. Start by ensuring your power supply has overvoltage protection (OVP) to prevent damage from voltage spikes. Overcurrent protection (OCP) is also essential, as it automatically limits output or shuts down when excessive current is detected, protecting your hardware. Don’t overlook short circuit protection (SCP), which disconnects power immediately during a short circuit, preventing further damage. Look for overload protection (OLP) to maintain system integrity by shutting down if the load exceeds capacity. Lastly, heating protection (OTP) monitors temperature and triggers a shutdown to prevent overheating, ensuring long-term reliability in your compact setup.