20 Best 400w Power Supply Reviews In 2022

20 Best 400w Power Supply Reviews In 2022

Have you been searching for the best 400w power supply for your needs? You are at the right place. We recognize that amidst so many choices in the market, it can be perplexing and confusing to make the right pick.

This article will help you choose the right 400w power supply with more ease. We have taken into consideration the varied needs and wants of all segments of consumers to give you the perfect guide on how to pick the right product. So that you can shop worry-free!

Disclaimer: We are using Amazon affiliate Product Advertising API to fetch products from Amazon, include: price, content, image, logo, brand, feature of products which are trademarks of Amazon.com. So, when you buy through links on our site, we may earn an affiliate commission at no extra cost to you.. Read more.

Our Top 20 Best 400w power supply On The Market

1. EVGA 100-N1-0400-L1 , 400 N1, 400W, 2 Year Warranty, Power Supply 100-N1-0400-L1

Features :

  • EVGA 400W N1 series
  • Fan Size/Bearing: 120 millimeter sleeve bearing – Quiet and intelligent auto fan for near-silent operation
  • Heavy-duty protections including OVP, OPP, and SCP
  • 2 year & EVGA’s 24/7 technical support

Additional Info :

Item Dimensions
Height 5.5
Width 3.4
Length 5.9
Weight 3.30693393
Release Date 2018-10-17T00:00:01Z

2. Coolmax 240-Pin 400 Power Supply with 1×80 mm Low Noise Cooling Fan (I-400)

Features :

  • ATX12V version 2.0
  • Single +12V output design
  • Serial ATA 150 ready
  • Total Power: 400 W. Input- 100 ~ 132V AC / 200 ~ 264V AC
  • Connector: 1x 20+4-pin Main Connector; 1x?P4 Mainboard Power Connector; 2x 15-pin SATA Connectors; 3x Peripheral Connectors; 1x 4-pin Floppy Connector
  • Cooling System: 1x 80mm Low Noise Cooling Fan

Additional Info :

Item Dimensions
Height 5.6
Width 3.3
Length 5.9
Weight 2

3. Thermaltake Smart 430W 80+ Black Continuous Power ATX 12V V2.3/EPS 12V Active PFC Power Supply PS-SPD-0430NPCWUS-W

Features :

  • Delivers 430W continuous output at +40℃. Compliance with Intel ATX 12V 2.31 & EPS 12V 2.92 standards
  • 80 Plus Certified: 80% efficiency under typical load
  • Supports (2) PCI-E 6+2pin Connectors. Active (PFC) Power Factor Correction, MTBF: 100, 000 hours
  • Industry Grade Protections: (OPP) Over Power Protection, (OVP) Over Voltage Protection, (SCP) Short Circuit Protection
  • 5 year warranty

Additional Info :

Color Black
Item Dimensions
Height 7.25
Width 4
Length 9
Weight 3.3
Release Date 2018-08-05T00:00:01Z

4. Mackertop 400W Power Supply PSU Compatible with HP 280 288 480 600 800 G3 G4 942332-001 PA-3401-1HA

Features :

  • Input: 100-240 V, 50-60 Hz,5.2A
  • Output: + 12.1Vmain == 16A, + 12.1Vcpu == 16A,+ 12.1VG == 16A,Total power:400W
  • Compatible part number: 942332-001 PA-3401-1HA
  • Compatible model: For HP 280 288 480 600 800 G3 G4
  • Warranty: 12 Month Warranty. Contact us if you have any problems

5. Rextin Switching Power Supply12V 400W 33A Regulated Transformer Led Driver SW for LED Strip Lights (400W)

Features :

  • Led switching power supply 12V 400W transformer driver SW, Input: AC 110V/220V 50/60Hz, Output: 12V 33A 400W
  • Smart device surge protection for Short-circuit Protection, Overload Protection, Over Voltage,Over Temperature Protection. High efficiency, High Reliability, Low Temperature Rise
  • Certificates: CE/RoHS/FCC Approved
  • Warnings: Don’t open or modify the led power supply. Please leave children, kids far away from high voltage power source. Please use it under professional electrician’s guides. Any abuse or improper use will void warranty.
  • widely used in LED lighting, Home Appliance, Instrumentation, Office Automation, Telecom, Process and Engineering Industries etc

Additional Info :

6. LightingWill Waterproof IP67 LED Power Supply Driver Transformer 400W 110V AC to 24V DC Low Voltage Output with 3-Prong Plug 3.3 Feet Cable for Outdoor Use

Features :

  • Input: 90-140V AC 47/63HZ. Output: 24V DC 16.6A 400W
  • Converts 110V AC to 24V DC, widely use for LED strip lights, led light bulbs and other 12V DC led lights(≤400W)
  • Aluminum alloy metal housing, easy for heat dissipation and ensure stability. 100% Waterproof IP67 protect for outdoor use
  • Automatic protection for: short circuit, overload, over voltage, over current, high temperature. Protection type: Hiccup mode, auto-recovery after fault condition is removed
  • High quality with 1 year warranty, and our seller support team always stand behind our products in any way, so please contact us for replacement if you have any quality problems

Additional Info :

Item Dimensions
Weight 2.67

7. Coolmax I-500 500W ATX 12V V2.0 Power Supply

Features :

  • ATX12V version 2.0
  • 120mm low noise cooling fan
  • Single +12V output design
  • Serial ATA 150 ready
  • MTBF 100,000 hours
  • Over voltage protection & short circuit protection

Additional Info :

Item Dimensions
Height 5.9
Width 3.3
Length 5.5
Weight 2.20462262

8. Chengliang Power Supply Dc 24v 17a 400w Original Ender 3 3D Printer Switching PSU UL Certified

Features :

  • 24v power supply 24 v regulated universal 24 volt adapter output 24 vdc 17a 400w certified DK-87763-UL
  • Power supplies input voltage 100-120/200-240vac by switch convert ac 100-120v/200-240v to dc 24v 17a 400w
  • Efficiency over 86% for 3d printer CCTV monitoring led light strip industrial automation communication
  • Smart full protections SCP OVP UVP OPP OCP OTP auto on/off cooling fan power on auto works Noise≤35dB
  • You get one original ender 3d printer power supply CL-P400W24V-D warranty 3 years 24hrs online service
  • Withstand 300V AC surge input for 5 seconds
  • Withstand 5G vibration shock
  • No load power consumption<5W
  • 100% full load burn-in test
  • Warranty 3 years

Additional Info :

Color Silver
Item Dimensions
Height 1.9685
Width 4.48818
Length 8.46455
Weight 1.6975594174

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

Features :

  • APEVIA SFX-AP400W Mini ITX Solution / Micro ATX / SFX 400W Power Supply
  • Cooling: 1 x 80mm Automatically Thermal Sensing Fan. All Cables are Sleeved
  • Connectors: 1 x 20+4pin Main Power, 1 x 4pin 12V(P4), 1 x 6/8pin PCIe, 2 x SATA, 2 x 4pin Molex, 1 x 4pin Floppy
  • Output: +3.3V@12A, +5V@12A, +12V@28A, -12V@0.3A, +5Vsb@2.5A
  • Dimension: 125mm x 100mm x 63.5mm (4.92″ x 3.94″ x 2.5″) – L x W x H

Additional Info :

Item Dimensions
Height 2.5
Width 4
Length 5
Weight 2.1

10. JoyNano 400W Switching Power Supply 5V 80A AC-DC Converter Transformer for CCTV Surveillance LED Display Industrial Automation Stepper Motor and More [Upgraded Version]

Features :

  • Converts AC voltage to 5V DC. LED Indicator.
  • Output Current 80 Amp, Power 400 Watt. Efficiency more than 80%.
  • Smart device surge protection for Shortage Protection, Overload Protection, Over Voltage Protection
  • Widely used in Industrial automation, LED display, communications, CNC Stepper, etc
  • Efficient, long life, stable, and reliable – JoyNano Quality Warranty

Additional Info :

Item Dimensions
Height 1.968503935
Width 4.330708657
Length 8.4645669205
Weight 1.763698096

The Buying Guide: Our Advice on How to Buy the Best 400w power supply

Before you invest your hard-earned money into a product, you should properly educate yourself about the available products and the best alternatives in the market. We have compiled the list of factors you should consider before buying a  400w power supply to make your task easier.

Like almost any product, before buying a 400w power supply, you should ask yourself these few questions:

  1. How reputable are 400w power supply in comparison to market competitors?
  2. How durable and long-lasting are they, and how easy is it to service or fix them if something goes wrong?
  3. Why is it worth buying 400w power supply instead of other products?
  4. What are some key features and highlights of 400w power supply? Are those features worth it for your needs?
  5. What are some positives and negatives of 400w power supply, and how do they affect your user experience?
  6. Where can you buy 400w power supply and service or repair it if necessary?

These are just some of the questions that you need to seek the answer to when purchasing the product. It is essential to keep in mind that you may have further queries and questions, as you should.

These are just a few considerations that we consider absolutely crucial. You can find detailed answers to almost all of your questions by some internet research or even by trying out the product at the store.

Summarized Tips on Why You Should Buy from an Online Marketplace

In the year 2022, you have a multitude of options everytime you look to buy a new product. You have traditional retailers, department stores, online marketplaces, etc. We believe that for your next purchase, you should seriously consider online marketplaces.

Online platforms come with loads of facilities designed to make your entire shopping experience better. They are reputable, well regarded, and provide you with the opportunity to shop from your home and get the best deals.

A very important thing you get when buying from an online platform is flexibility and convenience. In our busy lives, it is quite hard to find the time to visit a physical store. Meanwhile, you can buy anything you want, including 400w power supply from an online store, while you are taking a break at work or doing your chores.

As it should be clear to you by now, there are a multitude of benefits when you go with an online platform over physical stores. Some of the benefits are summarized below in a few key points:


Online platforms quite often offer the best value in the market. There are many sellers who sell 400w power supply. However, thanks to the wide dealer and supplier network as well as advanced supply chain management, online platforms can almost always undercut the competing physical stores.

Online platforms also often give discounts and sales, especially around the Black Friday event and other festivities. You can find deals that you simply can’t find anywhere else.


Reliability is one key concern when you buy from an online retailer without physically testing the product. You simply don’t have the option to check the product before buying, so you must rely on the site.

Thankfully, online platforms usually offer warranty and easy replacement on many brands and products, including 400w power supply. You can avail all the warranty facilities of any regular store, all from the comfort of your own home.

Their extended warranty policies make sure that if you do end up encountering an issue on any product, you won’t incur financial losses. In fact, you can get a replacement product in a short period. This sort of guarantee makes shopping from online platforms a breeze. This is a primary reason so many people are switching to shopping from online platforms.


The online platforms around the world are growing exponentially in size, and that applies to the selection of products as well. As they get more popular, more and more brands sign up to sell their products on online platforms.

They have a wide range of products across many categories, divided and organized well. This helps you find exactly what you are looking for easily. You may even get software-generated recommendations for products you may need.  This includes 400w power supply and many more.

Having a huge variety means that you can assess your preferences and choices. You can choose from a range of alternatives before purchasing. This is often not the case in most physical stores, where there is a limitation to the number of brands.


Being able to read reviews from actual users of the product could prove to be very useful. Companies may often leave out some potential flaws or negatives in the product description.

But users who actually used the product can give honest and balanced feedback, which is useful to the buyers. You can take a decision unaffected by bias if you account for actual user experiences of the product you are looking for.


Being on the lookout for the right product can be challenging as there are so many good options. It can often be hard to narrow down the best products. Hopefully, this buying guide will help you pick from the best 400w power supply for your unique needs.

Another important aspect is picking the right place to buy the right product. We have extensively covered the benefits of going with online platforms. We hope that this article will be informative enough in aiding you to make the best purchase decisions in the future.

Leave a Comment

Your email address will not be published.