The power supply for a PC is an underrated component in a gaming system. For beginners, it is often difficult to choose the best power supply for their needs.
In the market, there are many power supplies and there are too many factors that come into play while making a purchase decision. But if you choose the wrong power supply, you could have adverse consequences later down the line.
Moreover, the power supply is an important part of a game console or any PC. It provides power to all the organs, the task of the power supply unit is to ensure that the PC components receive a constant and clean current. If the current is not supplied, it will cause many minor inconveniences such as fan noise, serious damage, and even the death of many components inside the system.
We have reviewed the top 6 power supplies for PCs with the buying guide below.
Here are the best power supplies for pc you can buy in 2022:
- Best Overall: Corsair CP 9020218 NA 750 Watt & Fully Modular RGB Power Supply For PC
- Runner Up: EVGA 500 W1 & 80+ WHITE Power Supply For PC
- Best Budget: ThermaltakePower PS SPD 0500NPCWUS W 120mm Ultra Quiet Cooling Fan & Active PFC Supply For PC
- Best Durable: ARESGAME GL1000 G ld Certified Fully Modular Power Supply For PC
- Best Convenient: Pystar 1000W Power Supply For PC
- High Quality: CORSAIR RM CP 9020232 NA Series 850 Watt Power Supply For PC
|6 Best Power Supplies For Pc|
|Corsair CP 9020218 NA 750 Watt & Fully Modular RGB Power Supply For PC|
|EVGA 500 W1 & 80+ WHITE Power Supply For PC|
|ThermaltakePower PS SPD 0500NPCWUS W 120mm Ultra Quiet Cooling Fan & Active PFC Supply For PC|
|ARESGAME GL1000 G ld Certified Fully Modular Power Supply For PC|
|Pystar 1000W Power Supply For PC|
|CORSAIR RM CP 9020232 NA Series 850 Watt Power Supply For PC|
Best Overall: Corsair CP 9020218 NA 750 Watt & Fully Modular RGB Power Supply For PC
- Save energy
- Advanced lighting control
- Easy to install
- Great color matching cabling
- Solid performance
- The button on the back that you need to supposed to turn it on/off/cycle
Corsair CP-9020218-NA 750 Watt & Fully Modular RGB Power Supply For PC has an 80 PLUS Bronze certified efficiency delivering up to 88%, generating less heat, and reducing energy costs? Featuring one-button RGB lighting control, with ten preset lighting modes for eight individually addressable RGB LEDs packed into one 120mm RGB fan.
It also connects to the CORSAIR iCUE RGB lighting controller (sold separately) or motherboard via the included 5V RGB adapter for advanced RGB lighting control.
Together with a dedicated optimized fan curve specially calculated to reduce noise levels. On the other hand, it also supports Microsoft's state-of-the-art sleep mode for extremely fast wake-up times and low load efficiency.
|Corsair CP 9020218 NA 750 Watt & Fully Modular RGB Power Supply For PC Specifications|
5.91 x 5.51 x 3.39 inches
Power Supply Design
Best for lowering the energy costs and keep noise levels down
Runner Up: EVGA 500 W1 & 80+ WHITE Power Supply For PC
- Quality of materials
- Solid power supply
- Value money
- Well design stable
- Somewhat loud fan
EVGA 500 W1 & 80+ WHITE Power Supply For PC is the outstanding value EVGA 500 WAT 80 plus white certification, with 80 percent efficiency or higher under typical loads? For heavy-duty protections, including OVP (Overvoltage Protection); UVP (Under Voltage Protection, OCP (Overcurrent Protection), OPP (Over Power Protection), and SCP (Short Circuit Protection) Also, compatibility of EVGA 500 W1, 80 white 500 W, Power electricity 100 W1 0500 KR (100 W1 0500 KR ).
|EVGA 500 W1 & 80+ WHITE Power Supply For PC Specifications|
5.51 x 5.91 x 3.35 inches
ATX12V / EPS12V
With heavy duty protections
Best Budget: ThermaltakePower PS SPD 0500NPCWUS W 120mm Ultra Quiet Cooling Fan & Active PFC Supply For PC
- Very quiet
- Simple drop-in replacement
- Useful information
- Does not work well
ThermaltakePower PS-SPD-0500NPCWUS-W 120mm Ultra Quiet Cooling Fan & Active PFC Supply For PC delivers up to 500 Watts of Continuous Power at plus 40 degrees. According to Intel ATX, 12 Volt 2.31 and EPS 12V 2.92 standards. In addition, 80 PLUS certified 80 percent efficiency under typical load. It also supports the PCI E 6plus2pin connector. Active power factor correction (PFC) with MTBF up to 100,000 hours.
In addition, industrial-grade protections: (OPP) Over-Power Protection, (OVP) Over-Voltage Protection, (SCP). In particular, it provides short-circuit protection, incorporating high-quality components.
Furthermore, equipped with a powerful 12 Volt rail, outstanding performance under all types of system loads.
|ThermaltakePower PS SPD 0500NPCWUS W 120mm Ultra Quiet Cooling Fan & Active PFC Supply For PC Specifications|
8.9 x 4 x 7 inches
ATX12V / EPS12V
Can be performed under all types of system loading
Best Durable: ARESGAME GL1000 G ld Certified Fully Modular Power Supply For PC
- Save place
- Easy to install
- Well made
- More expensive
ARESGAME GL1000 Gold Certified Fully Modular Power Supply For PC features a 1000w ATX gaming PC PSU power supply, up to 10-year warranty, and 80 Plus Gold efficiency (up to 90% or higher). APFC LLC DC-DC topology connection delivers stable and continuous power output.
With its compact design and large capacity, complete modules keep your rig neat and orderly.
|ARESGAME GL1000 G ld Certified Fully Modular Power Supply For PC Specifications|
5.9 x 5.5 x 3.3 inches
Power Supply Design
Maximum Input Voltage
Minimum Input Voltage
Best for great design
Best Convenient: Pystar 1000W Power Supply For PC
- For gaming
- Value for money
- Great performance
- Run quietly
- Need more cables for modular
Pystar 1000W Power Supply For PC operates at 1000W with 80 Plus Gold certification, achieving 90% or higher efficiency under typical loads. Together with the Full Module to improve airflow and reduce clutter, cable management is easier.
In addition, the DC-DC structure makes the power output more stable and safe. The 140mm fan section keeps quiet while maintaining good heat dissipation.
|Pystar 1000W Power Supply For PC Specifications|
6.29 x 5.9 x 3.38 inches
FDD Adapter, SATA
Power Supply Design
Maximum Input Voltage
Minimum Input Voltage
The structure is safe and stable
High Quality: CORSAIR RM CP 9020232 NA Series 850 Watt Power Supply For PC
- Energy efficiency
- Low noise
- Much power
- Does not compatible with all cases
- Sata power connectors at right angle
CORSAIR RM CP-9020232-NA Series 850 Watt Power Supply For PC has a fully modular operation, as you connect only the cables your system needs. Includes three EPS12V connectors for full compatibility with modern motherboards and graphics cards. Coupled with a 140mm rifled bearing fan with a specially calculated fan curve ensures fan noise is kept to a minimum, even at full load.
In addition, Zero RPM fan mode for near-silent operation at low to medium loads. Furthermore, industrial-grade 105°C rated capacitors deliver stable electrical performance and reliability.
|CORSAIR RM CP 9020232 NA Series 850 Watt Power Supply For PC Specifications|
6.3 x 5.91 x 3.39 inches
Power Supply Design
Great constructions inside and connectors for full compatibility with modern graphics
How To Choose The Best Power Supply For Pc?
When choosing a power source, you need to calculate how much electricity is from the power source to run the computer. It is important to distinguish the power source that does not "supply" power, but mainly from computer components that "suction" electricity. So when there is a larger power source, it will not automatically increase the electricity bill.
And there are two ways by which the user estimates the amount of power the user system needs.
By simply finding the power benchmarks drawn from sites like Tom's Hardware or YouTube channels like GamersNexus the individual components of the system (mainly CPU and GPU), and then adding them together, leaving ample space for smaller devices like drives and fans.
This will give you the minimum power rating, used in many power supply capacity computers such as OuterVision's computers. As they will give you an estimate after looking at the components of your build.
Note, that this calculator often overestimates components' power consumption and may recommend more PSU than you need. In summary, it is advisable to leave an additional headroom of about 150-200 Watts in your power supply capacity. For example, if all components under your load area are up to 650W, then an 800Watt unit is a good choice for this piece of hardware. From there, that will leave you with plenty of room to upgrade or overclock as you see fit. Despite leaving the necessary space in the PSU capacity, buying too many power supplies of several hundred watts is not a good choice.
When you buy a 1000 Watt PSU for a computer that can only output up to 650 Watt under load, you are essentially wasting money on the capacity that you are not using. Buying under your PSU is a no-brainer. PSU needs should not be underestimated by purchasing the exact capacity, that your system will operate at its peak. Therefore, it is necessary to ensure a lot of headroom while keeping the overall capacity within reasonable limits.
Is the efficiency of the PSU stable? This is a question to consider before purchasing a product.
Often power supplies have different levels of efficiency, and they are "rated" according to how efficient the product is. As we mentioned earlier, the power supply converts the AC power from the wall into the DC power required from the components. But some natural energy is lost in the process as waste heat.
A good power supply will convert about 80% of the input power into DC power. But if the power supply is really good it can convert more than 90% of the input power. This is the reason why a more efficient power supply is better.
The market has a rating system called the "80 PLUS" rating system that evaluates the efficiency of power supplies and assigns them different ratings. 80 PLUS is a voluntary certification program that promotes energy efficiency in computer power supply units (PSUs) according to Wikipedia. The 80 PLUS rating indicates how efficient the power supply is at converting AC power to DC power.
To achieve this claim, the power supply must maintain a specific level of efficiency when under 20%, 50%, and 100% load situations. There's also a new Titanium rating that looks at power supply performance under 10% load.
Rails and currently
Often manufacturers specify how many 12V "rails" their PSU contains. A "single rail" PSU has a single high-power 12V rail that powers the components, while a "multi-rail" PSU splits its output between two or even more 12V rails. Their difference lies more in how they distribute and convert power inside the PSU, and in general, both will work well in a gaming system.
Usually, there is a table printed on the PSU that specifies all the current ratings for which the PSU is rated. The most important rating is the 12V rating, since the 12V rail supplies current to both the CPU and GPU. So make sure that the 12V rail current rating will suffice for your components. For example, the AMD RX 580 uses about 35A of current at its peak. For that, the PSU should have a 12V current rating ideally higher than 40A as any current spike could trigger a hard restart. The 12V rating will contain the total amount of power the 12V rail is rated to supply and that should also be considered.
All in all, this is something that is beyond the reach of the average consumer to test, but the components of the PSU matter a lot.
Cheaper no-name PSUs use cheap electronic components inside, which can affect power output in the system and the overall life of the power supply.
To see if the PSU is using good components, expert reviews can be helpful. Users can take apart a PSU and analyze the individual components to write a well-informed review.
Another good way to judge the quality of the components inside a PSU is to compare their weights. Heavier PSUs tend to be made from reliable components compared to PSUs that feel light in the hand. While these tests aren't certain, a general estimate can give you an idea of your unit's quality without consulting a professional.
Form Factor and Modular
There are three popular types on the market:
ATX: Standard PSU form factor, it fits most ATX and MicroATX cases in Mid-Tower or Full Tower form. PSU sizes and shapes are the norms for PCs these days. ATX power supplies typically measure 150 × 86 × 140 mm (5.9 × 3.4 × 5.5 in).
SFX: power small form factor PSUs designed to fit like Mini-ITX boxes or other cases where space is limited for the PSU. They use the same pinout and components as the ATX PSU, albeit smaller in all dimensions. The SFX measures 125 × 63.5 × 100 mm (width × height × depth), with a 60 mm fan, compared to the standard ATX size of 150 × 86 × 140 mm.
SFX-L: a variation of the SFX form factor with the only difference being the increased depth. More depth to the PSU allows it to accommodate a large fan. SFX feed. The SFX-L measures 125 × 63.5 × 130 mm to make room for a 120mm fan.
There are plenty of other PSU designs out there, but they're not common in the gaming consumer space and office PCs.
The modularity for the Power Supply
There are three different versions of the module offered by the manufacturers. Some power supplies are non-modular, others semi-modular, and then fully modular. The basic difference between them is the attachment of the cables. Non-modular PSUs have all cables attached to the device and they cannot be removed either. Furthermore, semi-modular cables have only a handful of cables pre-mounted, while modular cables have no pre-mounted cables at all.
The fully modular PSU allows users to choose which cables to attach to the PSU to reduce cable clutter, but costs more.
Which Brands Make The Best Power Supply For Pc?
CORSAIR (NASDAQ:CRSR) is a leading global developer and manufacturer of high-performance gear and technology for gamers, content creators, and PC enthusiasts. From award-winning PC components and peripherals, to premium streaming equipment and smart ambient lighting, CORSAIR delivers a full ecosystem of products that work together to enable everyone, from casual gamers to committed professionals, to perform at their very best.
CORSAIR also includes subsidiary brands Elgato, which provides premium studio equipment and accessories for content creators, SCUF Gaming, which builds custom-designed controllers for competitive gamers, and ORIGIN PC, a builder of custom gaming and workstation desktop PCs and laptops.
Thermaltake Technology was established in 1999, and has been marketed to the world under the "Thermaltake" brand name ever since. Thermaltake first specialized in air cooling, successfully launching the world’s first turbine cooler, the “Golden Orb”. With the mission to “Deliver the perfect user experience”, Thermaltake has since then become the leading brand in computer hardware & peripherals in the PC DIY market and the number one choice for PC DIY enthusiasts worldwide.
“Thermaltake ” stands for Thermaltake’s 3 main products lines: case, power, and cooler. Thermaltake started with cooling products, and with time branched into case and power supplies. Thermaltake’s innovation has allowed the brand to create unique, aggressive, vivid, and stylish products. With strengths in innovation and complete product lines, Thermaltake ventured into the casemod market to provide modders casemod total solutions.
The “Thermaltake Spirit” represents Thermaltake’s promise toward its users; the promise to provide products that display “Quality Performance & Reliability”. The “Key 3 Spirit” is the foundation for all Thermaltake products, and is the reason for Thermaltake’s continuous success worldwide.
The power supply isn't the most appealing component of PC builds, though. The PSU is one of the few components where you shouldn't save a few bucks or find a deal. Spend your budget a bit wide for a good PC component.
You should also check out our selection of the top 6 power supplies for PCs to buy a good product.