TOP computer power supplies 2021: rating of the best, which one to buy

1 be quiet! System Power 9 600W

hotline.ua

Characteristics: declared power 600 Watts, has PFC, cooled by one fan with adaptation function.

be quiet! System Power 9 600W takes first place in the top power supplies for computers in 2021. The creator of the device is the German brand be quiet! Listan GmbH & Co. KG, which specializes in the production of computer equipment and PC components. The efficiency of the unit is 89%. This is the highest figure in the power supply market in 2021. In this case, the device consumes up to 0.13 W even in standby mode. There are two 12 Volt lines and four PCIe connectors. With their help, the unit can power the CPU, GPU and several video cards at once. Comprehensive protection is built in to protect against overloads and explosions. The system itself consists of several subsystems. These subsystems protect individual components of the block - OPP, OVP, UVP, OTP, OCP and SCP. At heavy loads, the DC-to-DC voltage conversion function is automatically activated. This signature feature of the latest models of be quiet! designed to protect the processor and video card in case of an emergency. For cooling, the power supply unit has one adaptive fan. When the load/temperature in the housing changes, the temperature and load sensors, respectively, transmit a signal to it, and the fan regulates the speed of rotation of the blades. This solution reduced the overall noise of the system.But under high loads the model is still noisy.

Pros:

• Confirmed power of 600 watts
• Long wires
• Fan with adaptation

Minuses:

• Noisy under heavy loads

Price – 5,000 rubles.

2 Thermaltake TR2 S 650W

Characteristics: power 650 Watt, active PFC, 1 fan (12 cm) is used for cooling.

The body of the Thermaltake TR2 S 650W power supply is made of an alloy of several metals to increase durability and is coated with black paint. Its operating efficiency is 86%, maximum voltage is 230 V. The system contains high-quality capacitors. In case of overload, they will protect the device from leaked electrolyte and also prevent an explosion. They are also needed for reliable and uninterrupted operation of the power supply. A single +12 Volt line has a stabilization function for safe operation of the power supply. The manufacturer recommends its device for medium-sized computers, since gaming computers may not have enough power. At the same time, Thermaltake TR2 S 650W supports work with all Intel processors starting with the Haswell core. One fan is used for cooling. Because of this, the noise emitted does not exceed 20 decibels. To improve the cooling system, Thermaltake designed the unit with a special cable sleeve. This is necessary so that the wires do not block the flow of cold air to the heating elements and the ventilation of hot flows inside the case.

Pros:

• Affordable price
• Quiet
• Sleeve for wires with high-quality braiding

Minuses:

• A single sleeve for all cables is inconvenient

Price – 4,850 rubles.

3 Ginzzu CB650 650W

hotline.ua

Characteristics: declared power 650 Watts, no PFC, one 12 cm fan cools the system.

Third place in the ranking of computer power supplies in 2021 is occupied by the CB650 650W from Ginzzu.This is the only device in the rating that does not use heat-shrinkable materials. The manufacturing company decided not to use them so that each cable had its own sleeve. According to the designers, this will increase cooling efficiency by 12%. The metal case contains high-quality components - they provide stable voltage even after long-term use. Stability of operation is also affected by one +12 Volt line for the entire power supply. In this model, Ginzzu increased the length of the power cable. Now it can be neatly twisted and placed in a case with a form factor. The stylish black case is made of alloys of several metals. A single fan with an adaptation function, like the first place, cools the device during operation. When the load or temperature changes, the fan receives a corresponding signal and then increases or decreases the speed of rotation of the blades.

Pros:

• Cooling system
• Power proven in practice
• Easy to connect to PC
• Adaptive fan

Minuses:

• Noisy under high loads

Price – 3,100 rubles.

4 ExeGate UNS400 400W

Characteristics: power 400 Watt, no PFC, 1 fan (12 cm) is used for cooling, noise level up to 20 decibels.

Closes the top of the best budget power supplies for PCs in 2021. Device power 400 Watt. This is not much for gaming machines, but the unit can handle powering an ordinary computer. Thanks to the built-in connector, it works with the latest motherboard models. Therefore, the device supports both new and old motherboards. In this case, functionality is not lost. Operates in the voltage range 115-230 Volts. One fan is used for cooling.Despite the lack of an adaptation function, the fan efficiently performs its job of separately cooling components and eliminating possible failures. Users of this power supply model in their comments on Yandex.Market note the quietness of its operation - the total noise level will not exceed 20 decibels. To protect against overloads and short circuits, a comprehensive protection system is built in, like the first place in the top. It consists of subsystems, each of which “protects” its own component of the power supply.

Pros:

• Quiet
• Weighs little
• Confirmed power

Minuses:

• Low quality build

Price – 1,300 rubles.