TOP 20 best power supplies: 2020 rating and what parameters to focus on when choosing a device for your computer

Which company's power supply is better to choose?

The best power supply companies presented below produce products taking into account the network frequency and current indicators established in different countries. Among the most popular manufacturers on the market are the following:

• Be Quiet ! – a brand from Germany has been selling cases, cooling systems for desktop computers and power supplies that operate silently since 2006. The precision of assembly and quality of materials guarantees the durability of the products and brings the company numerous awards.
• ExeGate is a Hong Kong-based company producing accessories and computer components. Customers like the assortment, build quality, and product design, and constant quality control guarantees the durability of the product.
• Powerman – the brand produces computer, electrical and wiring equipment. The company improves technical characteristics and product design to attract customers and improve product quality.
• Ginzzu is a company from Hong Kong that has been producing high-tech products for more than 10 years. Enterprises in Turkey, China, Taiwan and Russia produce gadgets and accessories, audio, household appliances, and PC components. More than 30 service points provide warranty support for the product.
• Chieftec - the brand has been producing computer cases since 1990. Later, the variety of products was replenished with power supplies and accessories. The products are manufactured on modern equipment in compliance with the latest technologies, the brand guarantees quality and long service life.
• Cooler Master , a company headquartered in Taiwan with representative offices in Brazil, China, Russia, the Netherlands, and Germany, has been producing computer components since 1992. The brand conducts its own research and testing to improve the quality of the product.
• Corsair is a manufacturer of gaming computer equipment and peripherals from the USA. Since 1994, the brand, created by two founders, has become one of the best in the world in the production of components for personal computers. The company cooperates with large corporations, supplying them with high-class products.
• AeroCool Higgs is a magnate producing products for gamers: power supplies, gaming cases, keyboards, headsets, multifunction panels. Brand products improve the performance of a modern computer and allow you to spend time comfortably on it.
• Thermaltake is a brand from Taiwan that produces cases, power supplies, liquid and air cooling systems. The company has been producing accessories (fans, cables, pockets for hard drives) since 1999, expanding into the markets of America, Europe and Asia.
• Super Flower - a brand from Taiwan has been a leader among power supply manufacturers for more than 20 years. Batteries for phones, power supplies for TVs and computers, industrial devices are sold at low prices. The brand cares about the design and functionality of the product.

Which power supply manufacturer is better?

Among the trusted products on the shelf are the brands Corsair, Aercool, FSP, Zalman, Seasonic, Be quiet, Chieftec and Fractal Design.

Seasonic, a company specializing in the production of batteries, is internationally renowned.

This is one of the few brands on the market that sells its own products under its logo.

For comparison: the well-known manufacturer of computer components, Corsair, does not have its own factories for the production of power supplies and purchases finished products from Seasonic, equipping them with its own logos.

Rating of power supplies for a computer

The list of the best power supplies is compiled based on reviews from real users, expert ratings and their research. The following characteristics also influenced the selection of nominees:

• Size;
• Weight;
• Design;
• Power;
• Cooling system;
• Number and quality of connectors;
• Noise level;
• Current strength on all lines;
• The standard to which the device belongs;
• Overvoltage and overload protection;
• Price;
• Additional options.

When purchasing, users focus on the prices of devices, not paying attention to functionality. You can buy an inexpensive device with a simple design, equipped with all the necessary protection systems, or choose a nondescript-looking device with a powerful capacitor and other elements. For stable computer operation, it is worth purchasing a high-quality device from a trusted manufacturer.

The best hard drives

Choosing a high-power power supply (700-850 W): results of testing 48 models

Table of contents

• Introduction
• List of models
• Preliminary selection
• First stage: power characteristics
• Second stage: quality of stabilization
• Third stage: noise level

• First group
• Second group
• Third group
• Fourth group

Introduction

We continue the series of updated materials summarizing the results of testing power supplies using the mass method.
Let me remind you that the first results (with the same division into power groups) were summed up about a year ago. Since then, the list of tested devices has expanded significantly, and the market situation itself has changed noticeably. All this affects the results of selecting the best blocks. Using the example of already published materials on solutions with a power of 500-550 W and 600-650 W, it can be seen that they have changed in most price groups.

Today on the agenda are power supplies aimed primarily at systems with two video cards. Their power is from 700 to 850 W. And in this case, the most noticeable changes await us, since the total number of comparison participants has almost doubled. More specifically, since the previous selection, the list has been replenished with twenty-two models. Let's list the newcomers.

Nine units are classified as "750 W". Moreover, several of them are certified according to the 80 Plus Gold standard. These are Chieftec GDP-750C, Deepcool DQ750, Fractal Design Edison M 750W, OCZ ZS750W, Seasonic X-750, Thermaltake EVO-750AH3CCG and Zalman ZM750-EBT. Another unit - Seasonic Platinum-760 - belongs to the class of expensive flagships; it has a slightly higher power (by 10 W) and is certified according to the 80 Plus Platinum standard.

Thirteen units are classified as "850 W". And here, in addition to expensive “golden” models, more affordable middle-class devices are widely represented. These are Antec HCG-850M, Chieftec APS-850CB, Chieftec BPS-850C2, Cougar CMX 850 and InWin IP-P850BK3-3, certified to the 80 Plus Bronze standard. The “silver” XFX Pro850W XXX Edition can be included in the same category.

However, there is also plenty of “gold” in this group: Chieftec GPM-850C, Corsair CS850M, Corsair RM850i ​​and Seasonic X-850 are certified to the 80 Plus Gold standard. It also has its own flagships - FSP AURUM PT-850FM and Seasonic Platinum-860 (80 Plus Platinum).

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So, newcomers belong to different power and price groups. Before moving on to the selection, according to tradition, I will remind readers of its general scheme.

1. At the first stage (large section “Preliminary selection”), the main task is to eliminate the most “weak” (non-competitive) devices. The following will be subsequently excluded from the general list:

• Models that do not meet the real power requirements of our methodology;
• Models that do not provide the proper (defined by the ATX standard) quality of voltage stabilization;
• Models that do not meet noise requirements (really noisy units, not well suited for everyday use).

• After weeding out these (least successful) devices, we will compile a list of power supplies that have passed the preliminary selection and meet the mandatory requirements. It is from these numbers that the best models in several price categories will be selected at the second stage.

It should be noted that in the material presented below there are a lot of references to our methodology for mass testing of power supplies. We strongly recommend that you read it before reading. So, all formalities have been completed, let's proceed to the selection.

List of models

Here is a complete list of tested models in alphabetical order. In all cases, links to detailed reviews are provided.

1.	AeroCool Imperator 750W;
2.	AeroCool KCAS-700W;
3.	AeroCool VP-PRO 700 W;
4.	Antec HCG-850M;
5.	Chieftec APS-850CB;
6.	Chieftec BPS-850C2;
7.	Chieftec GDP-750C;
8.	Chieftec GPM-850C;
9.	Chieftec GPS-700A8;
13.	Corsair CS850M;
14.	Corsair CX750M;
15.	Corsair HX750i;
16.	Corsair RM850;
17.	Corsair RM850i;
18.	Cougar CMX 850;
19.	Cougar PowerX 700 W (CGR B4-700);
20.	Deepcool DQ750;
21.	Enermax ERV850EWT-G;
22.	Enermax Platimax EPM750AWT;
23.	Enhance ENP-6770GA;
24.	EVGA SuperNOVA NEX750G;
25.	Fractal Design Edison M 750W;
26.	Fractal Design Integra R2 750W;
27.	Fractal Design Newton R3 800W;
28.	FSP 700-50ARN;
29.	FSP 700-80GLN;
30.	FSP AURUM PT-850FM;
31.	FSP Epsilon F4 750W;
32.	HIPER K800;
33.	HIPER Type M700;
34.	InWin IP-P750BK3-3;
35.	InWin IP-P850BK3-3;
36.	Lepa G700-MB;
37.	OCZ ModXstream-Pro 700 W (700MXSP);
38.	OCZ ZS750W;
39.	Seasonic Platinum-760;
40.	Seasonic Platinum-860 (SS-860XP2);
41.	Seasonic X-750;
42.	Seasonic X-850;
43.	SilverStone Strider Gold 750 W;
44.	Thermaltake EVO-750AH3CCG;
45.	Thermaltake LT-700P (LT-700AL2NL);
46.	XFX Pro850W XXX Edition;
47.	Zalman ZM700-GLX;
48.	Zalman ZM750-EBT.

The total number of participants was increased from twenty-six to forty-eight.

There are thirteen 700-watt devices and eighteen 750-watt devices on the list. In the previous review material, these groups were considered as the main ones. This time we will be able to make a detailed comparison of the 850-watt models - their number has been increased from two to fifteen, so that they now form their own category with a sufficient number of participants.

But the less popular “800 W” group is still represented by only two units – Fractal Design Newton R3 800W and HIPER K800. For convenience of presentation, they have been added to the list of 750-watt devices (the differences in cost and power characteristics are not so significant; this point will be additionally taken into account when summing up).

Preliminary selection

First stage: power characteristics

Let me remind you that according to the mandatory requirements of our methodology, all units must cope with a real load of 100 W less than the declared “nominal”. This is not a very strict selection condition: any power supply with sufficient load capacity of the 12 V channel passes this test with ease, and high-quality high-end devices often exceed the mandatory requirements by 50-100 W.

Failure can befall only the “weakest” participants, who do not closely correspond to the declared power category (sometimes other factors intervene - for example, premature operation of the “overload” protection or a very large voltage drop). It is precisely the elimination of such devices that is the task of this stage.

Let's turn to the table, which provides data on the power of the 12 V channel declared by the manufacturer (power supplies are sorted precisely by this parameter) and the maximum load mode during testing. The right column indicates the block’s compliance with the mandatory requirements of the methodology.

Name	Declared load capacity of the 12 V line, W	Maximum load mode during testing, W	Compliance with the requirements of the methodology
Chieftec APS-850CB	850	800	Yes
Corsair RM850	850	750	Yes
Corsair RM850i	850	800	Yes
Corsair CS850M	849,6	800	Yes
Antec HCG-850M	840	800	Yes
Chieftec BPS-850C2	840	800	Yes
Chieftec GPM-850C	840	800	Yes
Enermax ERV850EWT-G	840	750	Yes
FSP AURUM PT-850FM	840	800	Yes
Seasonic Platinum-860 (SS-860XP2)	840	800	Yes
Seasonic X-850	840	800	Yes
XFX Pro850W XXX Edition	840	800	Yes
Cougar CMX 850	828	800	Yes
Fractal Design Newton R3 800W	792	700	Yes
InWin IP-P850BK3-3	768	700	No
Seasonic Platinum-760	756	750	Yes
Corsair HX750i	750	750	Yes
Zalman ZM750-EBT	750	700	Yes
Chieftec GDP-750C	744	700	Yes
Corsair CX750M	744	650	Yes
Deepcool DQ750	744	700	Yes
Enermax Platimax EPM750AWT	744	750	Yes
Fractal Design Edison M 750W	744	700	Yes
Seasonic X-750	744	700	Yes
SilverStone Strider Gold 750 W	744	700	Yes
Thermaltake EVO-750AH3CCG	744	700	Yes
EVGA SuperNOVA NEX750G	732	700	Yes
FSP Epsilon F4 750W	720	700	Yes
AeroCool Imperator 750W	696	650	Yes
InWin IP-P750BK3-3	696	650	Yes
Lepa G700-MB	696	650	Yes
Fractal Design Integra R2 750W	672	650	Yes
Cougar PowerX 700 W (CGR B4-700)	670	650	Yes
Chieftec GPS-700A8	648	500	No
HIPER K800	648	700	Yes
OCZ ZS750W	648	650	Yes
AeroCool KCAS-700W	636	600	Yes
Zalman ZM700-GLX	630	600	Yes
FSP 700-50ARN	620	600	Yes
AeroCool VP-PRO 700 W	600	600	Yes
Enhance ENP-6770GA	600	450	No
FSP 700-80GLN	600	450	No
Thermaltake LT-700P (LT-700AL2NL)	576	500	No
OCZ ModXstream-Pro 700 W (700MXSP)	552	600	Yes
HIPER Type M700	540	600	Yes

Necessary clarification. During the tests, the method for selecting the maximum load managed to change. Initially, the units were tested at a consumption predetermined by the methodology (100 W less than the “nominal”). However, it soon became clear that this approach does not allow us to fully reveal the capabilities of “top” solutions with very high power of the 12 V line. Later, we began to focus on this parameter. That's why some of the early models were tested under limited load (for example, the Corsair RM850 or Fractal Design Newton R3 800W are quite capable of more).

However, this does not prevent us from highlighting power supplies with low power characteristics. Dropping out of the competition are the Chieftec GPS-700A8, Enhance ENP-6770GA, FSP 700-80GLN, Thermaltake LT-700P (LT-700AL2NL) and InWin IP-P850BK3-3 (the only new product on this list). Here and below, photographs of the blocks are given in the order they are mentioned in the text.

So, after the first selection, five BPs were eliminated, the total number of participants was reduced to 43. We move on to the next test.

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The best inexpensive power supplies under 500 W

Low-power power supplies are usually installed for home or office computers used for simple programs and games. They are not always equipped with all the necessary protection systems, but they are inexpensive and available to all users. Based on their characteristics and functionality of more than 15 nominees, the 3 best power supplies in the low price segment were selected.

Be quiet! System Power 9 500W

Budget power supply Be Quiet! weighs almost 2 kg. Its size is 140x150x86 mm. The model was created for home or office computers to work in standard programs. The manufacturer has thought out the design of the device; the connected long cables in high-quality flexible braiding and heat shrinkage are protected from damage. One 120 mm fan is installed for cooling. The power supply operates quietly, only in the first 2-3 seconds after switching on there is noise. Guarantee for quality operation from the manufacturer for 36 months.

Advantages

• Design;
• 4 durable cables;
• Maximum load 500 W;
• Protection against overload, overheating.

Flaws

• Smell of plastic.

According to user reviews, Be Quiet! System Power 9 500W keeps all indicators normal even at full load. It looks neat, the wires are high quality. Buyers note the presence of an odor, but after a few days it disappears.

ExeGate UNS400 400W

The 400 W power supply operates quietly with a noise level of one 120 mm fan of 20 dBA. It has compact dimensions - 86x150x140 mm and low weight of 850 g. Overload, overvoltage, and short circuit protection systems are also built-in. The device is installed on low-power office computers for working with documents. 7 connectors with good length cords for unfastening cables not in use are conveniently located at the bottom of the case.

Advantages

• High quality material;
• Input voltage 115 – 230 V;
• Motherboard connector type 20+4 pin;
• Works quietly;
• Affordable price.

Flaws

• Not all cables have braiding.

User reviews of the ExeGate UNS400 400W indicate its quiet operation at a maximum load of 400 W.

For working on a computer with an integrated video card, the power supply is more than good. The warranty on the device is only 6 months.

Powerman PM-500ATX-F 500W

The lightweight and cheap power supply Powerman PM-500ATX-F 500W made of thin metal with a throughput power of 500 W belongs to the ATX 12V 2.2 standard, does not heat up and does not beep, especially if the load is less than 200 W. In this case, the input voltage is 200 - 240 V. The device weighs 1.22 kg with dimensions 86x150x140 mm. The manufacturer installed a cooling system - one 120 mm fan. Provides protection against overload, short circuit and overvoltage. There are several connectors with medium length wires. Motherboard connector type – 20+4 pin. It is installed in office computers or for home use.

Advantages

• Works quietly;
• Doesn't heat up;
• Power 500 W;
• Price 1500 – 2000 rubles.

Flaws

• Build quality.

Users of the Powerman PM-500ATX-F 500W note the good performance of the power supply. It is light and strong, but the wires are thin and the connectors are fragile. To prevent them from falling apart, it is recommended to wrap them with electrical tape.

The best power supplies for PCs in terms of price-quality ratio

be quiet! System Power 9 600W

Power supply be quiet! System Power 9 600W is designed to ensure uninterrupted operation of a computer that uses high-power components .

The rated power of the power supply is 600 W. The device is designed for long-term use in intensive mode.

Installed 120mm fan with low noise level.

The power supply can operate under conditions of noticeable fluctuations in the input voltage level: operation of the device is guaranteed at a voltage that varies from 200 to 240 V.

Characteristics:

• standard size - ATX;
• device power - 600 W;
• cooling system: 1 fan (120 mm);
• noise during operation - 31 dBA;
• Dimensions (HxWxD) - 86x150x140 mm.

pros

• efficient cooling system;
• reduced noise level;
• ease of installation.

Minuses

• wire rigidity.

Chieftec GPE-600S 600W

The Chieftec GPE-600S 600W power supply demonstrates the highest output power of 600 W, which allows it to be used to power a productive home station, entry-level gaming system unit or office machine.

The device is equipped with non-removable cables, at the ends of which there is a main 24 pin power connector, connectors for connecting the CPU, storage devices, video cards, etc.

The length of the main power cable for this model is 44 cm. The black flexible braiding of the cables protects the wires from kinks and abrasions and ensures an attractive appearance of the cables.

The power supply in a black housing supports operation at an input voltage of 230 V.

To optimize operating temperature under load, the PSU received an active air cooling system with one 120 mm fan. Its package includes documentation, mounting screws (4 pcs.) and a power cable.

Characteristics:

• standard size - ATX;
• device power - 600 W;
• cooling system: 1 fan (120 mm);
• Dimensions (HxWxD) - 87x150x140 mm.

pros

• ease of installation;
• reduced noise level;
• high-quality assembly.

Minuses

• short wires.

Super Flower Leadex Silver (SF-550F14MT) 550W

The Super Flower Leadex Silver (SF-550F14MT) 550W power supply will ensure stable operation of even a powerful gaming computer with two video cards.

The design of this model is modular, equipped with many different connectors. You can connect all components to the unit without any problems.

The device comes with a large set of cables, which will save you from searching and purchasing the necessary wires.

The device is equipped with protection against breakdown due to overload, power surges or network short circuit. In an extreme situation, it switches off immediately.

Characteristics:

• standard size - ATX;
• device power - 550 W;
• cooling system: 1 fan (140 mm);
• Dimensions (HxWxD) - 86x150x165 mm.

pros

• efficient cooling system;
• ease of installation;
• reduced noise level.

Minuses

• not specified by users.

The best power supplies over 750 W

Power supplies with a power of 750 W and higher will handle a combination of three or more video cards. They are used to supply power to single video card systems. Buyers pay attention to models with separate stabilization of output voltages and the number of power connectors. The equipment is expensive, so it is installed on gaming computers and machines for working with professional programs. The list of the 3 best power supplies over 750 W is compiled based on the characteristics and functionality of more than 19 models.

AeroCool Higgs 850W

A neat and stylish device from a trusted manufacturer AeroCool is a good solution for a powerful computer assembly equipped with several video cards. Its power is 850 W, but I can’t believe it because of the quiet operation of the device with a 140x140 mm fan and a sufficient number of holes in the case to dissipate heat. The switch is located on the body for ease of use. 8 cables for different connectors are removable. Their wires are connected into one bundle, convenient when using many components. The manufacturer provides a 3-year warranty on the equipment, during which it can be returned to a service center.

Advantages

• Power 850 W;
• Wire braid;
• High efficiency;
• Affordable price.

Flaws

• At minimum load the fan does not stop;
• Voltage drawdowns.

AeroCool Higgs 850W is a good and reliable power supply. The system works smoothly, there are voltage drops, but within normal limits, they do not affect the functionality.

Thermaltake Smart Pro RGB Bronze 850W

Thermaltake company especially focuses on the quality of packaging and component materials. Therefore, the Smart Pro RGB Bronze 850W model is made of good durable metal and is sold in reliable packaging that protects the product from damage during transportation. At low loads, the semi-passive cooling system (one 140x140 mm fan) turns off automatically, saving energy. Equipment power 850 W, 80 Plus Bronze certification. The manufacturer from Taiwan guarantees the durability of the product, offering service for 7 years.

Advantages

• Built-in switchable backlight in 4 modes;
• Bag for unused cables;
• Modularity;
• Active power factor correction.

Flaws

• High price;
• The screw holes do not line up with the plug.

The backlight looks beautiful, but does not affect the operation of the device, users note. The price is certainly not exactly budget, but it corresponds to the functionality and characteristics.

Super Flower Leadex II Gold (SF-1000F14EG) 1000W

The stylish modular power supply is designed for a functional gaming computer. It is sold in a standard cardboard box that protects the device from mechanical damage. The box contains all the information about the device. The case is made of durable metal, there is a brand logo on the side. The ventilation grille consists of octagons that allow air to pass through well. Includes modular power supply cables for components and mounting screws. 9 sockets provide different voltage levels.

Advantages

• Backlight;
• Cables are connected randomly;
• Active and semi-passive fan mode;
• The current along the 12 V line reaches 62.4 A.

Flaws

• Composite cable for motherboard.

The device complies with the 80+ Gold standard. The product from a reliable manufacturer from Taiwan is powerful, compact, and corresponds to the established price.

Functionality, characteristics and stylish design allow you to assemble a powerful machine for work and play.

Best Gaming Power Supplies for PC

Deepcool DQ750ST 750W

Deepcool DQ750ST 750W features excellent performance and high reliability . The model provides continuous power of 750 W at temperatures up to 50° C.

It is equipped with a 120mm variable speed fan and is sure to be the ideal power supply for your computer system.

A PWM fan with a hydrodynamic bearing and a specially designed impeller creates a powerful air flow while remaining virtually silent.

The long flat cable is compactly placed in the housing and does not interfere with air circulation in the system.

Characteristics:

• standard size - ATX;
• device power - 750 W;
• cooling system: 1 fan (120 mm);
• Dimensions (HxWxD) - 86x150x140 mm.

pros

• efficient cooling system;
• reduced noise level;
• ease of installation.

Minuses

• short power wires.

be quiet! Straight Power 11 750W

Power supply be quiet! Straight Power 11 750W is characterized by impeccable stability of operation .

The model provides power equal to 750 W. The power supply is suitable for use as part of a productive home or office computer.

The power supply is energy efficient: this is evidenced by the device's compliance with the requirements of the 80 PLUS Gold certificate.

Has a detachable cable system . Even the main power cable and the processor power cable are connected separately.

Cooling of the power supply is provided by a powerful 135 mm fan.

Characteristics:

• standard size - ATX;
• device power - 750 W;
• cooling system: 1 fan (135 mm);
• noise during operation - 21 dBA;
• Dimensions (HxWxD) - 86x150x170 mm.

pros

• efficient cooling system;
• ease of installation;
• reduced noise level.

Minuses

• hard wires.

Seasonic FOCUS Plus Platinum 750W

Seasonic FOCUS Plus Platinum 750W power supply meets high energy efficiency standards.

It supports Hybrid Silent fan Control technology, which allows you to reduce the fan speed under light loads, significantly reducing noise levels.

Active power factor correction provides the ability to maintain stable current readings in all conditions, thereby extending the life of the electronics.

The modular design of the connectors greatly simplifies the installation and connection of the power supply.

Characteristics:

• standard size - ATX;
• device power - 750 W;
• cooling system: 1 fan (120 mm);
• Dimensions (HxWxD) - 86x150x140 mm.

pros

• efficient cooling system;
• reduced noise level;
• high-quality assembly.

Minuses

• rigid cables.

Which power supply is better to buy?

The safe operation of the entire computer and the ability to connect additional components depend on the power supply. If you want to assemble your own machine for work or play, select elements that match each other. Under heavy loads, only equipment from trusted manufacturers will work uninterruptedly; cheap models are designed to operate medium-power computers.

• The quiet, compact power supply ExeGate UNS400 400W with a power of 400 W is suitable for office computers;
• Cooler Master MasterWatt Lite 230V 600W is suitable for medium-duty machines;
• Super Flower Leadex II Gold (SF-1000F14EG) 1000W is the most powerful power supply, suitable for particularly loaded units.

To understand which power supplies are best for a computer, focus on the brand, budget, duration of use of the machine, type of processor and its functionality. If you buy a cheap model with low efficiency, you risk overheating your computer. Knowing the approximate power consumption of your PC, purchase a power supply slightly more powerful than the processor for efficient operation.

How to choose a quiet power supply

A powerful power supply is cool, but I would like it to be as quiet as possible. Due to the design of most cases, it is the power supply that creates most of the noise. Even if you bought a supposedly silent case with anti-vibration coating and thick steel walls, but forgot about the quiet power supply, you definitely won’t be able to sit in silence. But there are a few tips that will help you choose a power supply with minimal noise.

The bigger the fan, the better. The bigger the fan, the better.

First, look at the diameter of the fan. The larger it is, the lower the speed required for cooling, which means the sound level will be lower. If you want the quietest power supply, then look for models with a fan diameter of 120 mm or higher. But you shouldn’t take a power supply without a fan at all, that is, with passive cooling. Because you don’t have an office computer, but a gaming one, which means the load on it will be appropriate.

Secondly, when choosing a power supply, you should pay attention to whether it has an automatic speed control function. Now it is available on almost all models, but it’s better to check. With it, the power supply will reduce the rotation speed at low load. This will help make your computer quieter while performing simple tasks such as running office applications, watching movies, listening to music, and so on.

Just in case, we remind you: the presence of backlight and other embellishments does not in any way affect the operation of the power supply. Just in case, we remind you: the presence of backlight and other embellishments does not in any way affect the operation of the power supply.

By the way, noise can also depend on the load: the less the block “stresses”, the quieter it is. This means that if your 400 Watt power supply is working at its limit, it will be noisy. That is why some take a block with a large margin.

Third, be sure to look at the detailed list of specifications. It must indicate the minimum and maximum noise levels. The lower both of these indicators are, the quieter the power supply will operate overall. If you are choosing between two similar power supplies, then it is better to give preference to the one with less noise. Especially the maximum one, because that is what can cause inconvenience.