03 February 2022

Buying the right desktop power supply or laptop charger is often underestimated by users. The reason for this is that we usually have no idea how powerful a power supply should be in order to provide optimal energy for all components of our equipment to work. Find out which parameters to pay attention to before buying a power supply for your computer.

230V socket and black ATX power supply switch

What should you know before buying a power supply for your PC?

There are several important things to consider before buying a PSU. The type of connection, that is, the type of wire terminations in a particular power supply is important. The category, size and power of the power supply, as well as whether this model guarantee the protection of our computer's components.

black ATX power supply screwed to the desktop computer case

The most popular types of power supplies

  • ATX POWER SUPPLY — one of the most popular power supplies available on the market. Its standard size is 150x140x86 mm, but depending on the power their dimensions may vary slightly. Akyga has prepared 3 lines of such power supplies for its customers to choose from. Basic — dedicated to supply power to standard desktop computers. Pro — designed for more complex structures and the Ultimate line — created to satisfy even the most demanding customers. It is also worth mentioning that the Ultimate desktop PSU will be perfect for Bitcoin miners.
  • SFX POWER SUPPLY this type of PSU is slightly smaller than an ATX PSU. Its dimensions are usually 63,5x125x100 mm. Due to which the fans mounted in them are much smaller. In the SFX-L version, the length of the power supply unit has been slightly increased. Thus, the inside of the PSU is able to accommodate a larger and more powerful fan. The SFX-L measures about 120mm in length as standard.
  • TFX POWER SUPPLY — it is the smallest available computer power supply on the market. Akyga offers it in two versions: 250 W and 300 W.

person holds the plugs of the ATX, 20 + 4 pin, PCI-E 8 pin and EPS 4 + 4 pin power supply

Voltage supply to the system

Another important aspect, when choosing a PC power supply, is the type of connection between the device and the computer. Although a new power supply is always delivered to the customer with a set of cables and plugs, it is worth knowing what configurations are possible.

Transparent ATX 24-pin connector with cables

The 24-pin connector of the motherboard (P1), that is used to power it. Depending on the model, you may meet a 20+4-pin split solution.

White eight-pin ESP connector

P4 / ESP is the CPU power connector. It is available in 4- as well as 8-pin version (also as 2 x 4-pin variant). With modern and high-tech processors, the power consumption is sometimes higher than a standard 24-pin connector can guarantee. Therefore it is necessary to connect an additional ATX12V or ESP12V cable to the motherboard as auxiliary power supply.

Black eight-pin PCIe connector

6/8-pin PCI Express connector for graphics card. Many graphics cards installed in desktop computers need an additional power source. Newer and more demanding designs more often use an 8-pin connector. Most power supplies available on the market are backwards compatible, which means that we can also meet with 6+2-pin connectors. Such a solution will allow to power cards with both 6- and 8-pin PCIe slots.

Black SATA connector with cables

The Serial ATA (SATA) connector is used to power mass storage devices such as hard drives, SSDs, and optical drives. For some time, fan controllers and RGB hubs, among others, have also use this type of connector.

White 4-pin Molex connector

Molex - 4-pin connector. This is quite an old solution which is used less and less often, however it can still be found e.g. in fans and liquid cooling systems.

disassembled gray ATX power supply

Desktop Power Supply. Which wattage should I choose?

This is the question most often asked by customers before buying a laptop charger. How many watts should a power supply unit for a desktop have? Unfortunately it is impossible to give a definite answer to this question. It all depends on the needs of your system and its complexity. The more complicated and complex the system, the more power it will need to function properly. Therefore, it is necessary to carefully check the equipment and its parameters. 

If you are wondering what power supply to choose for your desktop computer, you can use the many calculators available on the web. If you want to know which laptop charger will be suitable for your device, the Akyga brand provides its customers with a simple and intuitive search engine. This will allow you to find the right equipment for your needs without the slightest problem.

ATX power supply motherboard

Power supply for a PC with higher wattage

If you have determined the power consumption of your hardware, you should consider buying a power supply unit that provides an additional power reserve. If your calculations show that your system needs 500 watts to function properly, you can confidently reach for a charger that will be able to supply it with 600 or even 650 watts. This way, if your computer is upgraded or expanded, you will not have to invest in another PC PSU.

A 650-watt charger will not draw the maximum power, only as much as your particular equipment needs. Therefore, you don't have to worry about damaging your computer due to an overly powerful power supply. High power output does not equate to high energy consumption, but only means the ability to deliver power when needed.

person with a screwdriver screws the black ATX power supply to the computer case

Choice of power supply for stationary computers and protection of components

The last aspect you should definitely consider is the security of your system and the data stored on your computer. A good quality PC power supply or laptop charger should have a number of fail-safe features, including sudden power surges. It's worth checking whether the power supply you choose has, among other things, OVP protection, i.e. surge protection. This will make it possible to switch off the device in the event of excessive voltage being detected. Power supplies for desktop ATX computers from Akyga have all necessary protections, among others: 

  • OVP, 
  • OCP, 
  • OPP, 
  • OTP, 
  • SCP, 
  • PFC filter. 

Thanks to this, the work of your power supply is stable, runs without any interference, which guarantees the safety of data and equipment. If you are looking for a high-class power supply for your desktop computer, be sure to check out the offer of Akyga brand. Our specialists will be happy to help you choose the right model for your PC.