Best 400 Watt Power Supply

PSU Tier List

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SaleBestseller No. 1
Thermaltake Smart 500W 80+ White Certified PSU, Continuous Power with 120mm Ultra Quiet Cooling Fan, ATX 12V V2.3/EPS 12V Active PFC Power Supply PS-SPD-0500NPCWUS-W
  • Delivers 500 Watt Continuous output at plus 40 degree. Compliance with Intel ATX 12 Volt 2.31 and EPS 12V 2.92 standards
  • 80 PLUS Certified, 80 percentage efficiency under typical load
  • Supports (2) PCI E 6plus2pin 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
  • High Quality Components
SaleBestseller No. 2
ARESGAME AGV Series 500W Power Supply, 80 Plus Bronze Certified, Non Modular Power Supply, 5 Year Warranty
  • ATX PSU. Delivers 500 Watt Continuous output
  • 80 PLUS Bronze certified, with 85% efficiency or higher under typical loads
  • 5 Year Warranty and heavy protection including OVP/UVP/OPP/SCP
  • All cables are black and not ketchup and mustard colored
  • 120mm ultra quiet fan with excellent cooling performance
SaleBestseller No. 3
APEVIA VENUS450W 450W ATX Power Supply with Auto-Thermally Controlled 120mm Fan, 115/230V Switch, All Protections
  • Apevia Venus 450W ATX Power Supply.
  • Connectors:1 x 20/24pin Main Power, 1 x 8pin (4+4pin) 12V, 3 x SATA, 3 x Peripheral
  • Auto-Thermally Controlled Black 120mm Fan. 115/230V Switch. 5% Tolerance of 5V, 3.3V & 12V Output
  • IMPORTANT: The power supply will not power on simply by connecting the power cord to both the power supply and wall outlet. Ensure that all the power supply cables are properly connected to the PC for it to power on.
  • IMPORTANT: The 8pin CPU connector can be split apart to become a 4+4 connector by pushing one end of the 4pin down and the other end of the 4pin up for motherboards that require a 4pin power connector.
SaleBestseller No. 4
Amazon Basics UPS Battery Backup & Surge Protector 400VA/255W, 6 Outlets, Standby Uninterruptible Power Supply, for Power Outage Protection, Compact, Black
  • Standby uninterruptible power supply (UPS) with 400VA / 255W battery backup; ideal for home networks, IoT devices, and home entertainment devices. Runtime varies based on power consumption of connected devices. At half load (200VA/127.5W), the UPS provides approximately 6 minutes of backup power, while at full load (400VA/255W), it provides approximately 1.5 minutes of backup power
  • 6 outlets total (NEMA 5-15R), consisting of 3 surge-protected outlets and 3 surge-protected/battery-backup outlets
  • Protects electronic devices during a power surge; provides reliable power, keeping devices powered during short outages and powered for long enough to shut down properly during extended outages
  • Small compact size integrates easily into any home or office environment; 5-foot cord with NEMA 5-15P right angle and 45-degree offset plug (120V - 50Hz / 60Hz)
  • Note: Power management software is available for download in the "Product guides and documents" section of this page
Bestseller No. 5
SHARK TECHNOLOGY 400W ATX 12V V2.1 Internal PC Power Supply with Strong Turbo Fan for Desktop Tower Computer
  • Reliable & will not overheat with strong direct front-to-back cooling airflow & a turbo fan provideing high airflow exit out from the rear of the PC system.
  • Space saving design allows for easier installation and more airflow inside your PC.
  • Supports Intel Pentium III, IV (P4), newer Core series; AMD Athlon, FX, A6, A8, A10, and newer Ryzen based motherboards.
  • Modern single +12V output design with Color-coded wiring so you know visually the voltage on each wire going to each power connector
  • Connector: 1x 24-pin Main, 1x 12V 4+4, 2x 15-pin SATA, 2x Peripheral Molex Power Connectors.
SaleBestseller No. 6
APEVIA SFX-AP400W Mini ITX Solution / Micro ATX / SFX 400W Power Supply
  • 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, [email protected], [email protected]
  • Dimension: 125mm x 100mm x 63.5mm (4.92" x 3.94" x 2.5") - L x W x H
Bestseller No. 7
Apevia RAPTOR500W Raptor 500W ATX Power Supply with 120MM Black Fan
  • Apevia RAPTOR500W Raptor 500W ATX Power Supply With 120MM Black Fan.
  • Connectors:1 x 20/24pin Main Power, 1 x 8pin (4+4pin) CPU 12V, 3 x SATA, 3 x Molex, 1 x 6+2-pin PCI-express, 1 x Floppy
  • 1 x Auto-Thermally Controlled Red 120mm Fan (No LED). 115/230V Switch. Max. Output Current +3.3V(16A), +5V(16A), +12V(36A), -12V(0.3A), +5Vsb(2.5A)
  • Safety Protections. Standard ATX Size: 5.9" x 5.5" x 3.4" (L x W x H)
  • NOTE: The power supply will not power on simply by connecting the power cord to both the power supply and wall outlet. Ensure that all the power supply cables are properly connected to the PC for it to power on.
Bestseller No. 8
BestParts New 400W Power Supply PSU Compatible with HP 285 G3 MT/Pavilion 590/ Pavilion 690/ Pavilion TG01/ Pavilion TP01/ Envy TE01/ HP M01 Desktop
  • Connector: 4 + 4 +8 + 7pin(3wires)
  • Max Power: 400W
  • Compatible Model: For HP Pavilion 590 690 TG01 TP01 Envy TE01
  • Compatible Part Number: For L76557-003 DPS-400AB-43A
  • You will receive: 1 x Power Supply
Bestseller No. 9
NICE-POWER DC Power Supply Variable, 0-400V 0-1A High Voltage Bench Power Supply with Memory Storage & Encoder Knob, Adjustable Regulated Lab Power Supply with Output Switch Lock Button Color Display
  • Storage Memory, Output Switch: DC power supply variable with four sets of data storage function buttons M1-M4, can save four sets of commonly used voltage and current value combinations, recalled at any time, no need to repeat the input. The output switch controls the output of the DC power supply to prevent damage to the load.
  • Encoder Adjustment Knob, Lock Button: The encoder knob helps you to adjust the voltage and current quickly and precisely. Press the knob to determine the number of digits to be adjusted, then rotate the button to adjust the desired voltage/current value. The DC power supply LOCK button prevents re-adjustment by accidentally touching other buttons.
  • High Precision, 4-Digit Color Display: The DC Power Supply 400V 1A features a high resolution of 0.01V and 0.001A, and our DC power supply voltage is adjustable up to 400V. The lab power supply's 4-digit, backlit, colour LCD display provides a more accurate, clearly visible reading of voltage and current values.
  • Multi-Protection, Intelligent Temperature-Controlled Fan: Safety is our priority. The DC power supply variable has multiple protections for over-voltage, over-current, over-heat and short-circuit protection. When the internal temperature of the DC power supply reaches 122℉/50℃, the fan of the DC power supply will turn on automatically to effectively cool down and prolong the life.
  • Various Applications: This dc power supply variable is suitable for battery charging ( LiFePO4, lead acid batteries, etc.), electronics repair, communication equipment maintenance, electrolysis, electroplating, brush plating, lamp test, aging test, burn-in test, production line test, DIY, labs, schools, laboratories scientific research and teaching etc. The NICE-POWER DC power supply is a nice choice for beginners or professional electricians and DIY electronics hobbyist.
Bestseller No. 10
S-Union Upgraded 942332-001 400W Power Supply Compatible with HP 280 288 285 480 600 680 800 G3 G4 Power Supply PA-3401-1HA L04618-400 942332-001 L04618-800 PA-3401-2HA PSU Power Supply
  • 【Compatible model】: 942332-001 PA-3401-2HA 400W Power Supply Compatible with HP prodesk 480 800 680 285 288 280 Pro G3 MT prodesk 600 G4 400W Power Supply
  • 【Compatible part number】: 942332-001 L04618-400 L04618-800 942332-001 L76557-001 PA-3401-1HA PA-3401-2HA
  • 【Output】:942332-001 400W power supply Total power:400W, + 12.1Vmain == 16A, + 12.1Vcpu == 16A,+ 12.1VG == 16A
  • 【942332-001 400W PSU Input】100-240 V, 50-60 Hz,5.2A. 100% Brand New, Running Tested before Shipment. Each unit l04618-800 942332-001 400w power supply is tested by high and low voltage test, aging test, load test (power, voltage, current), short circuit protection test and automatic detection of professional equipment. This ensures maximum reliability and safety.
  • 【Excellent After-sale Service】Package includes: 1x PA-3401-2HA 942332-001 400W Power Supply. We provide 18-month warranty and guarantee you the best service. If you have any questions,Please contact us by email, if the there is any problem in the 942332-001 400w power supply product, damaged or not fit,S-Union provide full after-sales service and will try our best to solve the problem.Customer satisfaction is our tireless pursuit.No risk shopping.Buy with confidence.

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