Power supplies - the current bestsellers

For computers, PCs, smartphones and many other devices you need a power supply, which is usually included in the scope of delivery of the product. Sometimes you need a replacement, however, because either the original power supply has blessed the time or you need a second power supply for another location. In this case it is helpful if you can buy a power supply.

A power supply unit is also a must-buy for people who assemble PCs themselves, because the computer has to be supplied with a lot of energy. The size or the performance that the device has to deliver depends on the maximum amount of power the computer to be supplied requires. Here you usually add a few watts so that you don't have to constantly run the power supply at the limit.

A power supply calculator like this one here on bequiet.com enables the calculation of the power that the power supply for the PC should have (screenshot: comfortably).
A power supply calculator like this one here on bequiet.com enables the calculation of the power that the power supply for the PC should have (screenshot: comfortably).

Tip: up comfortable There is a power supply calculator, which, after specifying the components for the PC, calculates how many watts the power supply should have.

Power supply units according to output voltage

  • 48V power supply
  • 24V power supply
  • 12V power supply
  • 9V power supply
  • 6V power supply
  • 5V power supply
  • 4,5V power supply
  • 3V power supply
  • Power supply 12V 5A
  • Power supply 12V 3A
  • Power supply 12V 2A
  • Power supply 12V 1A
  • 19V 4,74A power supply

Overview of power supply units

  • PC power supply
  • convenient power supply
  • convenient power supply 600W
  • SFX power supply
  • LFX power supply
  • Meanwell power supply / KNX power supply
  • Lenovo power adapter
  • ATX power supply
  • Xilence power supply
  • Corsair power supply
  • Universal power supply
  • Universal power supply adjustable
  • Nintendo Switch power supply
  • Seasonic power supply
  • Asus Power Supplies
  • Cooler master power supply
  • USB power supply
  • Xbox One power supply
  • Xbox 360 power supply
  • 500 Watt power supply
  • 600 Watt power supply
  • 750 Watt power supply
  • 850 Watt power supply
  • 1000 Watt power supply
  • LED power supply
  • HP 460 power supply
  • FritzBox power supply
  • Raspberry Pi power supply
  • DIN rail power supply
  • PS2 power supply
  • PS3 power supply
  • PS4 power supply
  • PS4 Pro power supply
  • External hard drive with power supply
  • Philips Hue power supply
  • Moravian Star Power Supply
  • RTX 3080 power supply
  • Surface power supply
  • Surface Pro power supply
  • Thermal take power supply
  • Mini ITX power supply
  • Power supply adapter plug
  • Power supply USB C
  • Arduino power supply
  • Power adapter HP laptop
  • PC case with power supply
  • Find out power supply watt / Which power supply do I have?
  • Leifheit window vacuum power supply
  • Wii power supply
  • Laboratory power supply
  • Makita radio power supply
  • USB flush-mounted power supply unit
  • HP 2013 Ultraslim Docking Station power supply
  • The power supply unit beeps, buzzes or makes other noises
  • FSP Fortron Source Hyper 700W power supply
  • Worx Landroid power supply
  • Fire TV Stick power supply
  • ISDT power supply
  • Dockin D Fine power supply
  • Hue Lightbar power supply
  • Power supply car radio
  • Alexa power supply
  • HP Pavillion power supply
  • Lenovo AC adapter 65W
  • Samsung monitor power supply 14V
  • Ender 3 power supply
  • USB hub with or without power supply?
  • Apple Watch power adapter
  • JBL power supply
  • AC adapter Acer Aspire
  • Philips Hue power supply plug
  • Power supply HP Elitebook
  • Sony Vaio power supply
  • Nebula Capsule Max Power Adapter
There are power supplies for Apple devices from many manufacturers - here it is explained which power supply can be used on which device (Photo: José Manuel de Laá / Pixabay).
There are power supplies for Apple devices from many manufacturers - here it is explained which power supply can be used on which device (Photo: José Manuel de Laá / Pixabay).

Power supplies for Apple devices

  • Charge the iPhone with the MacBook power adapter
  • Charge the iPad with the MacBook power supply
  • Apple USB C power adapter
  • iPad power supply
  • iPad Pro power adapter
  • iPhone power supply
  • Apple power supply
  • iPhone power supply watt
  • iPad power supply watt
  • AirPods Pro power supply
  • AirPods Max power supply

FAQ about power supply

When it comes to powering computers or other electrical devices, there are some questions that keep coming up. I would like to answer these briefly and concisely below.

What is a power supply simply explained?

A power supply unit is a module in an electrical device that changes the current for the device from the home network to the voltage that the device needs. The power supply unit is sometimes built into the device and in other cases connected externally to the device via a cable.

What is the task of the power supply unit?

In computers, a power supply unit is used to convert the mains voltage from alternating current into a low direct voltage. For this purpose, the mains voltage is stepped down - usually with a switched-mode power supply -, sent through a rectifier, smoothed and regulated.

Which PC power supply?

Usual PCs for office tasks usually need a power supply with approx. 300 watts. Mid-range computers often work with 400 to 500 watts, while high-end game PCs, thanks to the high performance of the processor and graphics card, 600 to 800 watts.

Which power supply is the best?

In a test by PCGH 2021, various power supplies over 600 watts were tested. The top 3 test winners are the following:

  1. Corsair AX1600i with 1600 watts
  2. Enermax Max Tytan with 1250 watts
  3. Corsair HX750 with 750 watts

Properties such as efficiency, volume and price were evaluated.

How is a power supply set up?

Older power supplies usually consist of a transformer that converts the current from a high voltage to a lower voltage. Then the voltage is converted into direct current with a rectifier and smoothed with capacitors. In the case of newer power supplies, you will usually no longer find a transformer, as the voltage can only be converted more efficiently into a lower voltage using electronic components.

How can you see how many watts my power supply unit has?

Most of the time you have to unscrew the PC case to take a look at the power supply. Somewhere on the metal housing of the power supply unit there is a sticker showing the technical specifications. In addition to the input voltage (100-240 V), there is usually also the power in watts (W).

How busy is my power supply?

In order to measure the load, you have to measure how many watts the PC consumes during operation. To do this, one places a energy meter between the socket and the computer and checks the displayed wattage (W) when you are running a demanding program (such as a 3D computer game). The measured wattage is compared with the power of the power supply and you can see how close these values ​​are.

Which power supply 2021?

In a test by PCGH in 2021, a number of power supplies were compared with one another. The test winners were the following three power supplies:

  1. Corsair AX1600i with 1600 watts
  2. Enermax Max Tytan with 1250 watts
  3. Corsair HX750 with 750 watts

In the Sir Apfelot Blog you will find advice, instructions and reviews on Apple products such as the iPhone, iPad, Apple Watch, AirPods, iMac, Mac Pro, Mac Mini and Mac Studio.