Introducing the ultimate guide to the "10 Best 400W PSU for 2023." If you're in search of a reliable and efficient power supply unit to cater to your computing needs, look no further. In this comprehensive review, we have meticulously handpicked and tested the top 10 power supply units on the market, specifically designed to deliver a maximum power output of 400W. Whether you're a gaming enthusiast or a professional in need of a robust PSU, this article will provide you with all the necessary information to make an informed decision and ensure a smooth and stable power supply for your system.
Overall Score: 7/10
The 400W Power Supply Flex ATX is a fully modular PSU designed for efficient and low-noise power supply for gaming servers and desktops. It supports the standard Flex ATX form factor and has a voltage range of 90V-264V. With its continuous 400W power output and Japanese main condenser, it ensures unwavering power and reliability. The power supply features a class-leading single +12V rail for better efficiency, wake-from-sleep times, and low-load efficiency. It has a sleek black paint shell with strong heat dissipation and moisture protection. However, some reviewers noted that it doesn't mount in the standard PSU slot and can be a bit noisy. Overall, it is a reliable choice for power needs with a customer rating of 4.2/5.
Key Features
- Fully modular PSU 400W
- Supports the standard Flex ATX form factor
- 400W continuous power output
- Class leading single +12V rail
- Assembled with black paint shell
- Strong heat dissipation and moisture protection
Specifications
- Color: Black
- Dimension: 6.69Lx3.15Wx1.57H
- Size: 170x80x40mm
Pros
- Efficient and low-noise power supply
- Fully modular cabling for easy customization
- Reliable power output and Japanese main condenser
- Sleek and durable design with strong heat dissipation
Cons
- Doesn't mount in the standard PSU slot
- Can be a bit noisy
The 400W Power Supply Flex ATX is a reliable and efficient choice for gaming servers and desktops. With its fully modular cabling and strong heat dissipation, it offers easy customization and enhanced durability. While it may not mount in the standard PSU slot and can be a bit noisy, it provides reliable power output and excellent efficiency. The power supply’s sleek design and moisture protection add to its overall value. However, it is worth considering the power requirements of your system before purchasing. Overall, it is a solid investment for those looking for a quality power supply for their gaming or server setup.
Overall Score: 8.5/10
The RD RD6006PW 60V 6A DC DC Step Down Power Supply Whole Set is the perfect kit for hobbyists and DIY enthusiasts. This kit includes all the necessary components, but requires assembly. With a user-friendly interface and various control options, including APP control and PC software, you have full control over the RD6006PW. The output voltage range is 0-60.000V and the output current range is 0-6.0000A, providing you with flexibility for your projects. The kit also comes with a backup fuse for easy replacement. The RD RD6006PW is compatible with both micro USB and AC power cable connections. Please note that the default input for the power supply is 220V AC, but can be changed to 110V AC. Overall, this kit provides a reliable and customizable power supply solution.
Key Features
- RD6006PW full kit with 3 parts for assembly
- Supports APP control and micro USB connection
- Output voltage range: 0-60.000V, output current range: 0-6.0000A
- Backup fuse included for easy replacement
- User-friendly interface with multiple control options
Specifications
- Dimension: 12.20Lx7.09Wx3.54H
Pros
- Complete kit with all necessary wires and parts
- Includes Wi-Fi module and battery charging feature
- Firmware has safety features such as current cutoff and temperature probe
Cons
- S400 case lacks external serviceable fuse
- RD6006PW module does not fit case well
The RD RD6006PW 60V 6A DC DC Step Down Power Supply Whole Set offers a versatile and customizable power supply solution for hobbyists and DIY enthusiasts. With the ability to assemble the kit according to your needs and control the power supply through various methods, such as APP control and PC software, you have full flexibility and convenience. The inclusion of features like Wi-Fi connectivity, battery charging, and safety measures like current cutoff and temperature probe further enhance the functionality of this power supply. While the S400 case may lack an external serviceable fuse and the RD6006PW module may not fit perfectly, these minor drawbacks can be easily addressed. Overall, the RD RD6006PW is a reliable and value-packed option for your power supply needs.
Overall Score: 8.5/10
The New Goldshell CK BoxII Miner is a powerful and efficient computer mining device designed to help users earn cryptocurrency. With dual modes of 1.54T/260W or 2.1T/400W, this miner offers flexibility and high performance. It comes with a PSU for convenient setup. The compact design of the CK BoxII makes it easy to integrate into existing setups. Customers have praised this miner for its ease of use and reliable operation. However, some have reported issues with the included power supply. Overall, the Goldshell CK BoxII Miner is a reliable choice for cryptocurrency mining.
Key Features
- Dual modes of 1.54T/260W or 2.1T/400W
- Compact design for easy integration
- Comes with PSU for convenient setup
Specifications
- Dimension: 11.00Lx14.00Wx7.00H
- Size: CK BOX II without PSU
Pros
- Dual modes offer flexibility and high performance
- Compact design for easy integration
- Comes with PSU for convenient setup
- Reliable operation
Cons
- Issues with the included power supply
The Goldshell CK BoxII Miner is a reliable and efficient tool for cryptocurrency mining. With its dual modes and compact design, it offers flexibility and ease of integration. Customers have praised its reliable operation, making it a recommended choice for miners. However, some users have encountered issues with the included power supply. Overall, if you’re looking for a powerful and efficient mining device, the Goldshell CK BoxII Miner is a solid option.
Overall Score: 8/10
The RD RD6006W 60V 6A DC DC Step Down Power Supply Whole Set offers a versatile and efficient solution for power supply needs. This full kit includes three parts that you can assemble, with support for APP control and micro USB connection to PC software. The user-friendly interface and keypad control make it easy to operate, while the DIY display style allows for customization. The power supply is compatible with Android and iOS mobile phone operating systems, as well as PC systems. With its compact dimensions, this power supply is suitable for a variety of applications. The RD RD6006W power supply receives positive reviews for its performance and accuracy.
Key Features
- Full kit with three parts that can be assembled
- Supports APP control and micro USB connection to PC
- User-friendly interface with keypad control
- Compatible with Android and i OS mobile phone operating systems
- Compact dimensions for versatile use
Specifications
- Dimension: 12.20Lx7.09Wx3.54H
Pros
- Versatile and efficient power supply solution
- Supports APP control and PC software connection
- User-friendly interface with customization options
- Compact dimensions for easy integration
Cons
- Incompatibility issues with certain operating systems
- Limited availability of manufacturer support
Overall, the RD RD6006W 60V 6A DC DC Step Down Power Supply Whole Set is a reliable and versatile solution for various power supply needs. It offers convenient features like APP control and PC software connection, allowing for easy operation and customization. The compact dimensions make it suitable for different applications. While there may be some incompatibility issues with certain operating systems, the performance and accuracy of this power supply have received positive reviews. For those in need of a reliable and customizable power supply, the RD RD6006W 60V 6A DC DC Step Down Power Supply Whole Set is worth considering.
Overall Score: 8/10
The Z230 Tower 400W PSU Power Supply Unit is a reliable and efficient power supply for your computer. With a maximum output of 400W, it provides ample power to keep your system running smoothly. This power supply unit is compatible with the Z230 Tower desktop computer series and is easy to install. It features a 24-pin ATX power connector and a 4-pin ATX12V power connector, ensuring compatibility with a wide range of motherboards. The Z230 Tower 400W PSU Power Supply Unit is a great choice for upgrading or replacing your current power supply.
Key Features
- 400W maximum output for reliable power
- Compatible with Z230 Tower desktop computer series
- 24-pin ATX power connector and 4-pin ATX12V power connector
- Easy to install and replace
Specifications
- N/A
Pros
- Reliable and efficient power supply
- Ample power to keep system running smoothly
- Wide compatibility with motherboards
- Easy installation and replacement
Cons
The Z230 Tower 400W PSU Power Supply Unit is a reliable choice for upgrading or replacing your current power supply. With its maximum output of 400W, it provides sufficient power for your computer system, ensuring smooth performance. Its compatibility with the Z230 Tower desktop computer series and wide range of motherboards makes it a versatile option. The installation process is easy, allowing for a hassle-free upgrade or replacement. Overall, the Z230 Tower 400W PSU Power Supply Unit offers reliable and efficient power for your computer, making it a solid investment for any user.
Overall Score: 8/10
The EVGA 100-N1-0400-L1 is a 400W power supply that offers quiet and efficient operation. With its 120 millimeter sleeve bearing fan, the PSU runs near-silently while providing effective cooling. It also features heavy-duty protections against over voltage, over power, and short circuits. The power supply comes with a 2-year warranty and access to EVGA's 24/7 technical support. With dimensions of 5.90Lx3.40Wx5.50H, it is compact and suitable for almost any computer setup. Customers have given it a rating of 4.6/5 and have praised its reliability and value for money. The EVGA 100-N1-0400-L1 is a solid choice for those on a budget who are looking for a dependable power supply.
Key Features
- EVGA 400W N1 series
- Quiet and intelligent auto fan for near-silent operation
- Heavy-duty protections including OVP, OPP, and SCP
- 2-year warranty & EVGA's 24/7 technical support
Specifications
- Dimension: 5.90Lx3.40Wx5.50H
- Size: 400W
Pros
- Quiet and efficient operation
- Reliable and durable
- Great value for money
Cons
- CPU power cable could be longer
- No modular connectors or RGB lighting
The EVGA 100-N1-0400-L1 is a solid and dependable power supply that offers quiet and efficient operation. It comes with heavy-duty protections, a 2-year warranty, and access to EVGA’s technical support. While it lacks some advanced features like modular connectors and RGB lighting, it is highly reliable and offers great value for money. Customers have praised its performance and stability, making it a trustworthy choice for budget builds. Overall, if you’re looking for a reliable power supply without breaking the bank, the EVGA 100-N1-0400-L1 is a worthy contender.
Overall Score: 8/10
The Ptcliss 400W Full Modular 1U Flex ATX Power Supply is a reliable and efficient power supply suitable for various systems. With its 80 Plus Bronze Efficiency, it ensures high energy savings and stability even in places with unstable voltage. The power supply is fully modular and features a standard flex ATX form factor, making it easy to install and maintain. It also comes with multiple protection features to safeguard your computer. Built with Japanese capacitors, it offers great reliability and durability. Overall, the Ptcliss 400W Full Modular 1U Flex ATX Power Supply is a quality product that delivers excellent performance.
Key Features
- 80 Plus Bronze Efficiency
- Full Range Active PFC PSU
- Suitable for POS AIO system desktop gaming server
- Automatic computer protection
- Supports PCIe 6pin and PCIe 8pin connector
- Strong heat dissipation
Specifications
- Dimension: 6.50Lx3.20Wx1.58H
Pros
- Efficient and energy-saving
- Flexible and easy installation
- Reliable and durable components
- Multiple protection features
- Great heat dissipation
Cons
- Limited warranty period (1 year)
The Ptcliss 400W Full Modular 1U Flex ATX Power Supply is a solid choice for those in need of a reliable and efficient power supply. With its 80 Plus Bronze Efficiency and full modular design, it offers energy-saving benefits and easy installation. The power supply’s strong heat dissipation and multiple protection features ensure optimal performance and safety for your computer. While the 1-year warranty may be considered limited by some, the overall build quality and durability provided by Japanese capacitors make up for it. If you’re looking for a power supply that delivers on reliability and efficiency, the Ptcliss 400W Full Modular 1U Flex ATX Power Supply is worth considering.
Overall Score: 8/10
The T.F.SKYWINDINTL Fully Modular Flex ATX Power Supply is a compact and versatile power solution designed for various applications, including rack mount cases, desktop servers, POS systems, and AIO systems. With its fully modular design, 350W power output, and multiple connectivity options, this power supply offers efficient and reliable performance for your system. The fully modular design of this power supply allows for easy cable management and customization. You can connect only the necessary cables, reducing clutter and improving airflow within your system. With a power output of 350W, this power supply provides ample power for most small to medium-sized systems. It can reliably handle the power requirements of your components, ensuring stable operation and preventing power-related issues. Whether you have a rack mount case, desktop server, or POS system, this power supply delivers consistent and efficient performance.
Key Features
- 350W flex atx power supply
- Stable power delivery, hi-efficiency, low-noise operation
- Full voltage from 90-265V
- Supports standard flex atx form factor
- Non-modular power supply
Specifications
- Color: Silver
- Dimension: 6.50Lx3.15Wx1.57H
- Size: 6.69*3.15*1.57 inch
Pros
- Reliable power output for small to medium-sized systems
- Efficient cable management with fully modular design
- Suitable for various applications including rack mount cases
Cons
- Limited power for high-end gaming systems
- Fan may be louder than expected under load
The T.F.SKYWINDINTL Fully Modular Flex ATX Power Supply is a solid choice for individuals in need of a compact and reliable power solution. With its 350W power output, fully modular design, and support for various applications, this power supply offers efficient and stable performance. It excels in small to medium-sized systems and is suitable for applications such as rack mount cases and POS systems. While it may not be ideal for high-end gaming setups due to its limited power, it is a great option for those looking to optimize cable management and improve airflow within their systems. Overall, the T.F.SKYWINDINTL Fully Modular Flex ATX Power Supply combines reliability, efficiency, and versatility, making it a valuable component for computer and technology enthusiasts.
Overall Score: 9/10
The EVGA 550 BP is an 80+ Bronze certified power supply with 550W of power. It features a single 12V rail with a DC-DC converter for improved stability. It also has active power factor correction and heavy-duty protections for added safety. With a compact 120mm size, it is perfect for small cases or builds. The power supply comes with a 3-year limited warranty, ensuring reliability. Customers have praised its performance, build quality, and value for money. It is recommended for low to mid-end builds and is especially good for gaming PCs on a budget. Overall, the EVGA 550 BP offers great performance and features at an affordable price.
Key Features
- 80 PLUS Bronze certified
- Single 12V rail with DC-DC Converter
- Active Power Factor Correction
- Heavy-duty protections
- 3 Year Limited Warranty
Specifications
- Dimension: 4.70Lx5.90Wx3.40H
Pros
- High efficiency
- Compact size
- Good value for money
- Reliable performance
- Comes with 3-year warranty
Cons
- VGA pigtail cable is tight
- Lack of sufficient protection in shipping
The EVGA 550 BP is a solid power supply that offers great performance and features at an affordable price. It is highly efficient and comes with a 3-year warranty, providing peace of mind. Its compact size makes it perfect for small cases or builds. Customers have praised its reliability and value for money. The only potential drawbacks are the tight VGA pigtail cable and the lack of sufficient protection during shipping. Overall, the EVGA 550 BP is a reliable and budget-friendly option for those looking for a power supply for their low to mid-end builds.
Overall Score: 8/10
The PowerSpec 500W Power Supply is a reliable and efficient PSU designed for gaming PCs. With its stable power output, 80+ certification, durable components, and quiet cooling, it provides a solid performance while ensuring the safety of your components. It features a single +12V output rail, making it suitable for SLI & CrossFire systems. The PSU is also backed by a 5-year warranty and comes with excellent customer service support. Its universal AC input and heavy-duty protections make it a safe choice for your gaming rig. Overall, the PowerSpec 500W Power Supply offers the stability, efficiency, durability, and safety required to power your gaming PC.
Key Features
- 500W output power
- Active PFC design with single +12V output rail
- 80+ certification for 80% minimum efficiency
- Japan-made premier capacitors for longer lifespan
- Low-noise but high-flow 120mm fan for efficient cooling
- Universal AC 115-230V /8A input with heavy-duty protections
Specifications
- Color: Black
- Dimension: 6.30Lx5.90Wx3.39H
- Size: 500W
Pros
- Stable and strong power output
- Certified efficiency
- Durable components with 5-year warranty
- Quiet cooling fan
- Wide-ranging AC input and heavy-duty protections
Cons
- Lack of instructions for cable connections
- Rigid and hard-to-work-with cables
- Non-modular cables may clash with aesthetics
The PowerSpec 500W Power Supply is a reliable choice for gamers looking for a stable, efficient, and durable PSU. It offers the necessary power and safety features for SLI & CrossFire systems. While it lacks instructions for cable connections, it makes up for it with its quiet cooling and 5-year warranty. The non-modular design may not appeal to those concerned about aesthetics, but it delivers on performance and reliability. Overall, it is a good value for its price and worth considering for your gaming PC build.
400W PSU Buyer's Guide
Looking for a reliable 400W PSU? We've got you covered! Here's everything you need to know before making your purchase:
Key Considerations
Before diving into the options, keep the following factors in mind to ensure you choose the perfect 400W PSU for your needs:
- Wattage: The power capacity of a PSU is measured in watts. Ensure that the PSU you choose has a minimum capacity of 400W to handle your system's requirements effectively.
- Efficiency: Consider the PSU's efficiency rating, which indicates how effectively it converts AC power to DC power. Higher efficiency means less wasted energy and reduced power bills.
- Connectors: Pay attention to the types and quantity of connectors available on the PSU. Ensure it has the necessary connections to support all your components, such as the motherboard, graphics card, and storage devices.
- Modularity: Modular PSUs allow you to connect only the necessary cables, reducing clutter and improving airflow in your PC case. However, non-modular PSUs are often more affordable.
- Manufacturer Reputation: Opt for PSUs from reputable manufacturers known for their quality and reliability. This ensures better component quality and longevity for your system.
Compatibility and Safety
When it comes to power supply units, utmost compatibility and safety are crucial. Here's what you need to know:
- ATX Standard: Ensure that the PSU aligns with the ATX standard. Most modern PSUs are compatible with standard ATX cases and motherboards.
- Form Factors: Pay attention to the PSU's physical size, as larger PSUs may not fit in all cases. Popular form factors include ATX, SFX, and TFX.
- Safety Certifications: Look for PSUs with safety certifications such as 80 PLUS, which ensures high efficiency, and various safety measures like OVP (Over Voltage Protection), OCP (Over Current Protection), and SCP (Short Circuit Protection).
Noise and Cooling
Maintaining a peaceful environment while ensuring optimal cooling is essential for any PC. Here's what to consider regarding noise and cooling with your PSU:
- Fan Type: Check the fan type used in the PSU. Fans can be sleeve-bearing or ball-bearing, with ball-bearing fans generally being more durable and quieter.
- Fan Size: Larger fan diameters generally enable slower rotations, resulting in quieter operation. Look for PSUs with a larger fan to minimize noise.
- Noise Levels: Check reviews or specifications to determine the PSU's noise levels under different loads. Opt for a PSU with a noise level that suits your preferences.
- Modular PSUs: As mentioned earlier, modular PSUs allow better cable management, promoting efficient airflow and reducing noise caused by cable clutter.
Warranty and Support
A PSU is a critical component of your system's stability and functionality. Ensure you have the necessary support and warranty coverage:
- Warranty Length: Look for PSUs with longer warranty coverage as it provides peace of mind and indicates the manufacturer's confidence in their product.
- Customer Support: Research the manufacturer's reputation for customer support. Prompt and reliable customer service can be invaluable if you encounter any issues with your PSU.
- User Reviews: Explore user reviews and ratings to gauge the PSU's reliability and customer satisfaction. This provides insights into real-world experiences with the product.
Frequently Asked Questions about 10 Best 400W Psu For 2023
It depends on the specific components you plan to use. High-end graphics cards and powerful CPUs may require more than 400W. Check the power consumption of your individual components and consider a higher-wattage PSU if necessary.
No, connectors vary depending on the type of PSU and the components you use. Ensure that the PSU you choose provides the necessary connectors for your specific setup.
Not necessarily. Higher efficiency primarily improves power consumption and reduces wasted energy. However, a high-quality PSU with sufficient wattage will ensure stable and reliable performance, regardless of efficiency rating.
It depends on your specific CPU and GPU power requirements. Overclocking generally increases power consumption, so ensure that your PSU can handle the increased load. It may be safer to opt for a higher-wattage PSU for overclocking purposes.
While modular PSUs offer better cable management and improved airflow, they are not essential. Non-modular PSUs can be more affordable and provide sufficient performance and stability for most systems.
