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  9. Atx power supplies – The 15 best products in comparison

Atx power supplies – The 15 best products in comparison

Comparative winner of the editors Corsair RM750e (2023) Fully Modular Low Noise ATX Power Supply - ATX 3.0 & PCIe 5.0 Compatible - 105°C Capacitors - 80 Plus Gold Efficiency - Modern Standby Support - Black

Atx power supplies – The 15 best products in comparison

Recommended products in the area "Power supplies Atx"

We have products in the range "Power supplies Atx" compared with each other and put together recommendations for you. Here you will find the top 15 in the “Atx power supplies” section.

Atx power supplies – the most important things at a glance

ATX power supplies are the power supply devices used in computer cases. There are two main formats of power supplies: ATX and BTX Advanced Technology eXtended and Balanced Technology eXtended. The main differentiator between the two is the shape and size of the motherboard they are installed on. The following table shows the differences between the two formats:

ATX (Advanced Technology eXtended)

Basic size Baby AT, ATX and microATX mainboards

Dimensions: 30,5 21,0 cm x

Installed components: CPU, RAM, hard drive, graphics card, etc.

Power supply: ATX and microATX size power supplies

BTX (Balanced Technology eXtended)

Mainboards of the basic size BTX and microBTX

Dimensions: 33,0 24,5 cm x

Installed components: CPU, RAM, hard drive, graphics card, etc.

Power supply: BTX and microBTX size power supplies

The main characteristics of a power supply are the following:

Output power in amperes (A) or in watts (W)

output voltage in Volt (V)

Input voltage in volts (V)

Input power in amperes (A) or in watts (W)

Protection devices such as over-voltage protection, short-circuit protection, over-temperature protection, etc.

Connections for external devices such as USB, Firewire, etc.

Fan for cooling the power supply

On/off switch

The two most important components of a power supply are the transformer and the bridge rectifier. The transformer converts the input voltage to another voltage, which the bridge rectifier converts to direct current (DC). The bridge rectifier is a circuit consisting of three diodes that convert an AC signal to DC. The three diodes are arranged in such a way that two diodes are always conductive at the same time. The input voltage of the power supply must be higher than the output voltage for the bridge rectifier to work properly.

The main components of a power supply and their functions are listed in the table below:

component function

Transformer Converts the input voltage to a different, lower voltage

Bridge rectifier Converts the input voltage to direct current (DC).

Fan cools that Power Suppliesby dissipating heat

Power button Turns the power supply on or off

The most important characteristics of a power supply are the output power and the output voltage. The output power of the power supply is specified in amperes (A) or in watts (W). The output voltage of the power supply is specified in volts (V). A power supply with high output

The bestsellers in the field of "power supplies Atx"

A list of the best sellers under the category "Power supplies Atx" you can find here. Here you can find out which products other users have bought particularly often.

Bestseller no. 1
Corsair RM750e (2023) Fully Modular Low Noise ATX Power Supply - ATX 3.0 & PCIe 5.0 Compatible - 105°C Capacitors - 80 Plus Gold Efficiency - Modern Standby Support - Black
  • The Corsair RMe Series fully modular, silent ATX power supplies with dual 8-pin EPS12V connectors provide quiet, reliable power delivery with 80 PLUS Gold efficiency for a variety of different PC builds
  • Cable Type: Type 4
  • Continuous power W: 850 watts
  • ATX12V version: 2.53
Bestseller no. 2
be quiet! Pure Power 12 M 1000W, ATX 3.0 and PCIe 5.0 compatible, 80 PLUS Gold, modular power supply, 12VHPWR cable included, 120mm be quiet! Fan, BN345
  • The Pure Power 12 M 1000W is 80 PLUS Gold certified and achieves an outstanding efficiency of 93,1%. And it's worth it: less energy consumption means lower costs, better cooling and quieter operation.
  • Pure Power 12M 1000W is an ATX 3.0 power supply and comes with a 12VHPWR connector for next-gen PCIe 5.0 graphics cards and PCIe 6+2 connectors for current graphics cards.
  • Pure Power 12 M offers 1000W of continuous power on 2 independent 12V rails. Even if the graphics card demands excessive performance for short periods of time: The Pure Power 12 M 1000W can handle peak loads of up to twice the nominal load without any problems. This ensures reliable operation with the next generations of processors and graphics cards.
  • The extraordinarily quiet 120mm be quiet! fan achieves the best possible balance between effective cooling and quiet operation. The airflow-optimized fan blades, which reduce noise-causing turbulence, achieve the extremely quiet operation for which be quiet! is so well known.
  • Thanks to LLC topology, the Pure Power 12 M 1000W offers first-class voltage regulation. Therefore, it is the best choice for building very quiet systems, as well as upgrading gaming PCs and media editing PCs.
Bestseller no. 3
be quiet! Pure Power 12 M 750W, ATX 3.0 and PCIe 5.0 compatible, 80 PLUS Gold, modular power supply, 12VHPWR cable included, 120mm be quiet! Fan, BN343
  • The Pure Power 12 M 750W is 80 PLUS Gold certified and achieves an outstanding efficiency of 92,6%. And it's worth it: less energy consumption means lower costs, better cooling and quieter operation.
  • Pure Power 12M 750W is an ATX 3.0 power supply and comes with a 12VHPWR connector for next-gen PCIe 5.0 graphics cards and PCIe 6+2 connectors for current graphics cards.
  • Pure Power 12 M offers 750W of continuous power on 2 independent 12V rails. Even if the graphics card demands excessive performance for short periods of time: the Pure Power 12 M 750W can handle peak loads of up to twice the nominal load without any problems.
  • The extraordinarily quiet 120mm be quiet! fan achieves the best possible balance between effective cooling and quiet operation. The airflow-optimized fan blades, which reduce noise-causing turbulence, achieve the extremely quiet operation for which be quiet! is so well known.
  • Thanks to LLC topology, the Pure Power 12 M 750W offers first-class voltage regulation. Therefore, it is the best choice for building very quiet systems, as well as upgrading gaming PCs and media editing PCs.
Bestseller no. 4
Thermaltake TR2 S 600W | PC ATX power supply | 80+ | quieter 120 fan | EU certified | black
  • ✔️The TR2 S Series uses an ultra-quiet 120mm fan with intelligent speed control, which guarantees cool performance and quiet operation
  • ✔️The cables used for the TR2 S series are all sleeved so that the cables can be laid in the optimal place in the housing. This ensures optimal airflow and thus perfect cooling
  • ✔️The TR2 S series saves energy thanks to its high energy efficiency of up to 86% and is certified according to the 80 PLUS 230V standard
  • ✔️High-quality components enable continuous operation with stable and reliable performance and pleasant noise
  • ✔️PCI-E 6+2pin x 2 | 120mm fan with 1800 rpm
Bestseller no. 5
LC-Power LC1000M V2.31 Super Silent Modular 1000 Watt 80 PLUS GOLD PC ATX power supply
  • 1000W / 120mm fan
  • Fully modular cable management / black ribbon cables
  • 80 PLUS GOLD certified / Efficiency up to 90% / Full Range: 110 - 240 V
  • DC-to-DC technology
  • 8x PCI Express 6+2 pin
Bestseller no. 6
Corsair SF1000L Fully Modular Low Noise SFX Power Supply - ATX 3.0 & PCIe 5.0 Compatible - 120mm Quiet PWM Fan - 80 Plus Gold Efficiency - Zero RPM Mode - 105°C Capacitors - Black
  • Corsair SF1000L Fully Modular Low Noise SFX Power Supply - ATX 3.0 & PCIe 5.0 Compatible - 120mm Quiet PWM Fan - 80 Plus Gold Efficiency - Zero RPM Mode - 105°C Capacitors - Black
Bestseller no. 7
MSI MPG A850G PCIE5 power supply, EU plug - 850W, 80 Plus Gold Certified, fully modular ATX 3.0, supports PCIe 5.0 GPU, Japanese 105°C capacitors, 0% RPM mode, flat cable, black
  • 80 PLUS GOLD CERTIFIED - Efficient power supplies reduce energy consumption and heat stress. 80 PLUS Gold (up to 90%) is ideal for hardware with high power requirements (premium graphics cards, demanding games, rendering engines)
  • ATX 3.0 FULLY MODULAR - With ATX 3.0, the power supply can handle 2x total and 3x GPU power to support even the most demanding GPUs. Fully modular, with black flat cables (incl. storage bag) for improved airflow
  • PCIe 5.0 GPU SUPPORT - With the native 16-pin PCIe connector (12VHPWR), the MPG A850G PCIE5 can deliver up to 600W of power to a PCIe 5.0 graphics card (supports NVIDIA & AMD). Single-rail design provides the system with optimal performance
  • 0% RPM MODE - 0% RPM mode automatically disables the 135mm fan (FDB) once the TDP load falls below 40% to increase power efficiency and reduce unnecessary noise. Manual button on the back to turn off 0% RPM mode
  • SUSTAINABLE DESIGN - Half-bridge LLC with DC/DC converter and active PFC design for reliable output (OCP, OVP, OPP, OTP, SCP, UVP protection). Japanese 105°C capacitors ensure optimum stability, 10-year guarantee
Bestseller no. 8
Corsair RM1000x Shift Fully Modular ATX PSU - Modular Side Interface - ATX 3.0 & PCIe 5.0 Compatible - Zero RPM Fan Mode - 105°C Capacitors - 80 Plus Gold Efficiency - Black
  • Corsair RMx Shift Series fully modular power supplies feature a revolutionary patent-pending side cable interface for easy access to all ports and exceptionally efficient 80 Plus Gold performance
  • The Atx 3.0 standard assumes a high level of reliability and power efficiency
  • While many Corsair PSUs meet these requirements, the RMx Shift Series PSUs are officially certified for ATX 3.0 compliance.
Bestseller no. 9
Corsair HX1500i Fully Modular Ultra Quiet ATX PSU (Three EPS12V Ports, Liquid Bearing Fan, Zero RPM Fan Mode, 80 PLUS Platinum Efficiency) Black
  • Corsair HX1500i Fully Modular Ultra Quiet ATX PSU (Three EPS12V Ports, Liquid Bearing Fan, Zero RPM Fan Mode, 80 PLUS Platinum Efficiency) Black
Bestseller no. 10
Tacens Anima APIII750, power supply PC ATX 750W, SMD technology 85% bronze 12V, ultra-quiet 12cm fan, black
  • 85% BRONZE EFFICIENCY: The APIII750 power supply features 85% bronze efficiency SMD manufacturing technology, high-quality and reliable components, 12V single-rail technology, and double-layer carbon fiber circuit board
  • EUROPEAN QUALITY: The APIII750 power supply is designed and developed in Europe and manufactured in accordance with the directives and standards required by the European Union. Thanks to the OPP/OVP/UVP/SCP electronic protection systems, it guarantees maximum electrical safety
  • COMPLETELY SILENT: The APIII750 power supply has an ultra-quiet 12 cm Tacens fan with anti-vibration system and grille without airflow limitation with an inaudible performance of 14 dB
  • FULL BLACK CABLES AND CASING: All black finish with high quality long black flat cables designed for maximum compatibility and convenient installation: 1×20+4pin, 1x12V 4+4pin, 3xSATA, 2x MOLEX, 1x PCIe 6+2pin
  • HIGH PROTECTION EPE PACKAGING: To ensure the power supply arrives in perfect condition, the Anima APIII750 is perfectly protected by special packaging with full shock absorption system
Bestseller no. 11
NZXT C850 - PA-8G1BB-EU - 850 Watt Power Supply - 80+ Gold Certified - Hybrid Silent Fan Control - Fluid Dynamic Bearings - Modular Design - Sleeved Cable - ATX Gaming Power Supply
  • MORE EFFICIENT: At 50% load and high input voltage, the power conversion efficiency is 2% higher than the 80plus Gold Standard.
  • FULLY MODULAR: Use only the cables you need to keep your system clean and organized. Black jacketed cables and a matte black finish seamlessly match any PC style.
  • COMPATIBLE AND HIGHLY TESTED: The C Series is built and tested to strict standards to ensure hassle-free installation. It fits in most ATX cases and supports the latest NVIDIA and AMD GPUs up to 30 series and AMD 6000 series.
  • MORE ACCURATE AND ERROR-FREE: A microcontroller (MCU) enabled protection mechanism monitors current and voltage as well as output power.
  • OPTIMIZED AND QUIET: The Gold power supply features optimized heat dissipation with improved components and an optimized circuit design.
Bestseller no. 12
ASUS TUF Gaming 850W Gold PSU (850 Watt, fully modular PSU, ATX 3.0 compatible, Axial-tech fan, PCB coating, double ball bearings)
  • Capacitors and inductors undergo rigorous testing to earn military certification
  • Dual ball bearing fans last up to twice as long as sleeve bearings
  • A PCB coating protects against moisture, dust and extreme temperatures
  • An 80 Plus Gold certification is the result of Japanese capacitors and other high quality components
  • ATX 3.0 Compliant: The TUF Gaming Gold is ATX 3.0 compliant and comes with a 16-pin PCIe cable that can route up to 600W of power to PCIe Gen 5.0 graphics cards
  • The Axial-Tech fan design features a smaller fan hub that allows for longer blades and a locking ring that increases downward air pressure
  • Fully modular etched cables keep your rig neat and tidy
Bestseller no. 13
NZXT C650 Gold (2022) - PA-6G1BB-EU - 650 watt power supply - 80 Plus Gold certified - DC-DC technology - full modular design - sheathed cables - ATX gaming power supply
  • At 50% load and high input voltage, efficiency is 2% above the 80 Plus Bronze standard.
  • Only use the cables you really need. This keeps your system tidy and clear. The black jacketed cable and matte black finish complement any PC style.
  • The C-Series has been designed and tested to rigorous standards to ensure hassle-free installation and stable operation.
  • A microcontroller (MCU) protection mechanism monitors current, voltage and output power.
  • With the Gold power supply, heat generation has been reduced thanks to improved components and an optimized circuit design.
Bestseller no. 14
Synology 14-070009370 250 W Gray PSU - Power Supply (250 W, 24-pin ATX, Server, DS1513+, DS1515+, DS1813+, DS1815+, DS2015xs, RS815+, Gray, 81 mm)
  • Synology 14-070009370 Total power: 250 W. Mainboard connector: 24-pin, ATX. Usage: server.
  • Compatible Products: DS1513+.
  • DS1515 +
  • DS1813 +
  • DS1815+.
  • DS2015xs
  • RS815+ Color: Gray. Width: 81mm.
  • Depth: 155 mm.
  • Height: 41 mm.
Bestseller no. 15
be quiet! Pure Power 12 M 850W, ATX 3.0 and PCIe 5.0 compatible, 80 PLUS Gold, modular power supply, 12VHPWR cable included, 120mm be quiet! Fan, BN344
  • The Pure Power 12 M 850W is 80 PLUS Gold certified and achieves an outstanding efficiency of 93,2%. And it's worth it: less energy consumption means lower costs, better cooling and quieter operation.
  • Pure Power 12M 850W is an ATX 3.0 power supply and comes with a 12VHPWR connector for next-gen PCIe 5.0 graphics cards and PCIe 6+2 connectors for current graphics cards.
  • Pure Power 12 M offers 850W of continuous power on 2 independent 12V rails. Even if the graphics card demands excessive performance for short periods of time: the Pure Power 12 M 850W can handle peak loads of up to twice the nominal load without any problems.
  • The extraordinarily quiet 120mm be quiet! fan achieves the best possible balance between effective cooling and quiet operation. The airflow-optimized fan blades, which reduce noise-causing turbulence, achieve the extremely quiet operation for which be quiet! is so well known.
  • Thanks to LLC topology, the Pure Power 12 M 850W offers first-class voltage regulation. Therefore, it is the best choice for building very quiet systems, as well as upgrading gaming PCs and media editing PCs.
Bestseller no. 16
Corsair HX1500i Fully Modular Ultra Low Noise ATX Power Supply - ATX 3.0 & PCIe 5.0 Compatible iCUE Software Compatible - 80 Plus Platinum Efficiency - Black
  • Fully modular cabling system so you only need to connect the cables your system needs.
  • Meets Intel's ATX 3.0 performance standard, supports the PCIe Gen 5 platform, and withstands transient power surges.
  • A 140mm fan with FDB bearing (Fluid Dynamic Bearing) delivers extremely quiet and long-lasting fan performance.
  • Powerful CORSAIR iCUE software lets you create custom fan curves, monitor performance settings, and easily switch between single and multi-track OCP (Over Current Protection).
  • "Zero RPM" fan mode for near-silent operation at low and medium loads.
Bestseller no. 17
ASUS ATX power supply 1000W ROG Thor 1000P2 Gaming
  • Lambda A++ certification confirms that the latest Thor wields power in absolute inconspicuousness
  • Rog heatsinks cover key components for lower temperatures and less noise
  • A 135mm Axial-Tech fan with Pwm control reduces noise and keeps heat build-up in check
  • 80 Plus Platinum: Made with low esr capacitors and other high quality components
  • The Oled display monitors the power consumption in real time
Bestseller no. 18
be quiet! Dark Power 13 850W, ATX 3.0, 80 PLUS Titanium, modular power supply, PCIe 5.0 and PCIe 4.0 graphics cards, 12VHPWR cable included, Silent Wings fan, BN344
18 reviews
be quiet! Dark Power 13 850W, ATX 3.0, 80 PLUS Titanium, modular power supply, PCIe 5.0 and PCIe 4.0 graphics cards, 12VHPWR cable included, Silent Wings fan, BN344
  • The Dark Power 13 850W is 80 PLUS Titanium certified and achieves an efficiency of up to 95,4%. A real advantage for any high-end system, as it reduces energy consumption, achieves better cooling and quieter operation
  • Dark Power 13 850W is an ATX 3.0 power supply and offers both 12VHPWR connectors for next-gen PCIe 5.0 graphics cards and PCIe 6+2 connectors for current graphics cards. This makes Dark Power 13 850W extremely versatile and the perfect choice for all current and future-proof high-end systems
  • Dark Power 13 offers 850W of continuous power on 4 independent 12V rails. Even if the graphics card demands excessive performance for short periods of time: The Dark Power 13 850W can handle peak loads of up to twice the nominal load without any problems
  • The improved be quiet! Silent Wings fan is mounted on a tripod for maximum airflow and near-inaudible operation. It has a unique, flow-optimized design with advanced fluid dynamic bearings and a low-vibration 6-pole motor with a long service life and minimal energy consumption
Bestseller no. 19
Tecnoware ATX power supply 500W for PC - Quiet fan wheel 12 cm - Connector 2 x SATA, 1 x 24-pin, 1 x 12V 4 + 4-pin, 2 x Molex, black
  • REAL POWER ► Internal power supply for personal computers, 500 watts of pure and filtered power Dimensions L 14 x P 15 x H 8,5 cm and weight 1,0 kg
  • CABLE LENGTH ► 40 cm long; Only suitable for PCs with a power supply positioned in the upper part of the housing
  • ALL CONNECTORS IN THE RIGHT PLACE ► 2 x SATA, 1 x 24-pin, 1 x 12V 4+4-pin, 2 x Molex
  • READY TO USE ► Through simple procedures it is possible to install this ATX power supply in the computer case
  • COOLING WITHOUT COMPROMISE ► The required cooling is achieved by the 12 cm Ultrasilent fan wheel
  • IMPROVED SILENCE ►Thanks to the new fan controller, which adjusts the speed itself, the power supply becomes even quieter and minimizes noise emissions
  • HIGH PROTECTION ► Against overvoltages, overcharging and short circuits: High reliability and high MTBF
  • ENVIRONMENTALLY FRIENDLY PACKAGING ► In accordance with our Together On corporate philosophy, we have chosen 100% recyclable paper and cardboard packaging
Bestseller no. 20
be quiet! System Power 9 700W cm PC power supply | 80 Plus Bronze Efficiency | ATX | with cable management | Black | BN303
  • Two strong 12V lines
  • Stable running performance thanks to DC/DC technology
  • Two PCI Express ports for powerful multi-GPU systems
  • Quiet, temperature-controlled 120mm quality fan
  • Standby consumption of less than 0,15 watts
  • 80 PLUS Bronze efficiency of up to 89%
  • Partially modular, high-quality sheathed and ribbon cables
  • All-in-one cable with SATA, HDD and FDD connectors
  • Complete equipment with top security functions

This is what Stiftung Warentest says about products in the "Power Supply Atx" area

Stiftung Warentest examines, compares and tests the best products for consumers. Many of the tests by Stiftung Warentest help in deciding which product to buy. We do not currently know whether there is a test winner from Stiftung Warentest for this product that is recommended for purchase.

Our comparison winner in the field of "power supplies Atx"

Compare winner
Corsair RM750e (2023) Fully Modular Low Noise ATX Power Supply - ATX 3.0 & PCIe 5.0 Compatible - 105°C Capacitors - 80 Plus Gold Efficiency - Modern Standby Support - Black
  • The Corsair RMe Series fully modular, silent ATX power supplies with dual 8-pin EPS12V connectors provide quiet, reliable power delivery with 80 PLUS Gold efficiency for a variety of different PC builds
  • Cable Type: Type 4
  • Continuous power W: 850 watts
  • ATX12V version: 2.53

Current offers in the area "Power supplies Atx"

You want the best products in the range "Power supplies Atx" buy? In this bestseller list you will find new offers every day. Here you will find a large selection of current products in the category "Power supplies Atx".

Bestseller no. 1
Bestseller no. 2
Thermaltake TR2 S 600W | PC ATX power supply | 80+ | quieter 120 fan | EU certified | black
Thermaltake TR2 S 600W | PC ATX power supply | 80+ | quieter 120 fan | EU certified | black
✔️PCI-E 6+2pin x 2 | 120mm fan with 1800 rpm
53,90 EUR −17% 44,90 EUR Amazon Prime
Bestseller no. 6
ASUS TUF Gaming 850W Gold PSU (850 Watt, fully modular PSU, ATX 3.0 compatible, Axial-tech fan, PCB coating, double ball bearings)
ASUS TUF Gaming 850W Gold PSU (850 Watt, fully modular PSU, ATX 3.0 compatible, Axial-tech fan, PCB coating, double ball bearings)
Dual ball bearing fans last up to twice as long as sleeve bearings; A PCB coating protects against moisture, dust and extreme temperatures
179,90 EUR −18% 147,28 EUR Amazon Prime
Bestseller no. 8
ASUS ATX power supply 1000W ROG Thor 1000P2 Gaming
ASUS ATX power supply 1000W ROG Thor 1000P2 Gaming
The Oled display monitors the power consumption in real time
359,90 EUR −14% 309,27 EUR
Bestseller no. 10
be quiet! System Power 9 700W cm PC power supply | 80 Plus Bronze Efficiency | ATX | with cable management | Black | BN303
be quiet! System Power 9 700W cm PC power supply | 80 Plus Bronze Efficiency | ATX | with cable management | Black | BN303
Two strong 12V lines; Stable running performance thanks to DC/DC technology; Two PCI Express ports for powerful multi-GPU systems
89,90 EUR −10% 80,91 EUR Amazon Prime

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