8 Best 550w Power Supply In 2021 [Honest Review]

For building a gaming pc, you need a minimum 550w power supply. I have seen there are lots of 550w power supply are available on the market. But not all of the 550w power supply are not compatible with a gaming pc. You do not need to spend a hell lot of money for buying a 550w power supply, because they are very cheap.

I have made a list of all 8 best 550W power supply which are compatible with a normal gaming pc. I have made this list on my personal usage and other people’s feedback who have also bought these power supply. I have tested all of this power supply on my medium-end gaming pc.

Now I will give a review of all of the 8 best 550W power supply one by one. If you are in a hurry then you can buy the EVGA SuperNOVA 550 Ga, because it is the best 550W power supply that I have found.

8 Best 550w Power Supply

Image Name Brand Power Supply Design Dimensions LxWxH Weight Shop On Amazon
backpac EVGA SuperNOVA 550 Ga EVGA Full Modular 11.8 x 9 x 4.9 inches 5.55 Pounds Check Price
backpac Corsair RM550x 550 Watt Corsair Full Modular 6.3 x 5.91 x 3.39 inches 3.36 Pounds Check Price
backpac EVGA 550 B5 80 Plus BRONZE EVGA Full Modular 5.91 x 5.91 x 3.35 inches 5.25 Pounds Check Price
backpac Corsair CX5050M Corsair Semi Modular 5.9 x 5.5 x 3.38 inches N/A Check Price
backpac Antec Earthwatts EA550G Pro Antec Semi Modular 5.9 x 5.5 x 3.4 inches 4.27 Pounds Check Price
backpac Thermaltake Smart BX1 550W Thermaltek Non Modular 5.91 x 5.51 x 3.39 inches 1 Kilograms Check Price
backpac MONTECH BETA 550W MONTECH N/A 5.5 x 5.9 x 3.3 inches 4 Pounds Check Price
backpac ARESGAME AGW550 ARESGAME Non Modular 5.9 x 5.5 x 3.3 inches 4.02 Pounds Check Price

1. EVGA SuperNOVA 550 Ga


  • 80 plus Gold certified, with 90% efficiency or higher under typical loads
  • Fully modular to reduce clutter and improve airflow
  • 100% Japanese capacitors, LLC resonant circuit design +DC-DC converter design to improve 3.3V./ 5V. Stability
  • Double ball Bearing fan and EVGA eco mode for exceptional reliability and quiet operation
  • 10-year limited Warranty and unparalleled EVGA Customer Support


  • Output Wattage Is 550W
  • Wattage is 550W
  • Fully Modular Design
  • Dimension is 11.8 x 9 x 4.9 inches
  • Power Supply Weight Is 5.55 Pounds

EVGA SuperNOVA 550 Ga is a perfect power supply with 80 plus gold support. This power supply has ECO Mode with Dbb Fan for cooling your power supply without any problem. As this power supply is a fully modular power supply, it comes with removable cables. That means you can use only these cables, which are needed. This thing will greatly help you to keep your power supply cool.

There is a 24 pin power connector, which allows you to connect your power supply cables directly to your motherboard. I should also say that power supply cables will be given along with the power supply. I do not need to buy the power supply cables separately. The power supply easily fits in any ATX Mid Tower case.

2. Corsair RM550x 550 Watt


  • 80 Plus Gold certified for lower power consumption, less noise and cooler temperatures
  • Tuned for low noise operation even at full load
  • Zero RPM fan mode for near silent operation at low to medium loads
  • 100 percent industrial grade, 105 degree C rated Japanese capacitors ensure unwavering power and reliability
  • Fully modular cables, so you only connect the cables your system needs


  • Output Wattage Is 550W
  • Wattage is 550W
  • Fully Modular Design
  • Dimension is 11.8 x 9 x 4.9 inches
  • Power Supply Weight Is 3.36 Pounds
  • 135mm low noise cooling fan
  • Maximum Input Voltage is 240 vlot
  • Minimum Input Voltage is 110 vlot

Corsair has a reputation of being at the forefront of the market with high-end gaming components. There’s a cutting-edge and reliable in demanding environments the Corsair RM550x is an 80 plus gold rated fully modular ATX power supply. That designs a mid pad pcs with a single or dual graphics card set up.

Fully modular part applies off the highest quality and most customization all of the cables are removable and can be replaced for different options, like colored or braided. In the power supply section this power supply features a hundred percent all Japanese 105 degrees C capacitors.

These are premium components to ensure solid power delivery and long-term reliability 80 plus gold certification. This means that this PSU has very high-efficiency operation for less excess, heat, and low operating costs.

The RM550X feels extremely well built with the highest quality materials. So you can be absolutely sure of the quality and reliability. Corsair says RM550x pass ply is designed for those who demand high quality and reliability as well as maximum customizability.

3. EVGA 550 B5 80 Plus BRONZE


  • 80 PLUS Bronze certified, with 89% efficiency or higher under typical loads
  • Fully Modular to reduce clutter and improve airflow
  • EVGA ECO Intelligent Thermal Control System eliminates fan noise at low to medium loads
  • 5 Year and unparalleled EVGA Customer Support
  • Heavy-duty protections, including OVP, UVP, OCP, OPP, SCP, and OTP


  • Output Wattage Is 550W
  • Wattage is 550W
  • Fully Modular Design
  • Dimension is 5.91 x 5.91 x 3.35 inches
  • Power Supply Weight Is 5.25 Pounds
  • 135mm low noise cooling fan
  • AC 100-240 V

The EVGA power supply easily one of the most reliable and competitive power supply on market for its price. EVGA 550 B5 has an 80 plus BRONZE efficiency rating. It features 135-millimeter ball bearing fan to keep the power supply cool and quiet.

It comes with 124 pin, two four plus. four pin, four six plus,two pin, three sata power cables. A peripheral molex cable and one molex to fcd adapter with a fully modular interface. This power supply is great for cable management and just overall quality.

It has the unbelievable build quality and a really subtle paint job to blend it in more open systems. This power supply is a great price to performance, option for 80 plus gold power supply. It supports fully modular interface better fan and a longer warranty of 5-years.

It’s going to be really reliable for long-term use. I would say that this power supply is an easy buy for new builders. It’s really easy to set up and really easy to cable manage.

4. Corsair CX 550M


  • 80 Plus bronze certified: High efficiency operation for less excess heat and lower operating costs. Compatibility supports ATX12V 2.4/2.3/2.2/2.01 and EPS12V 2.92 standards
  • Thermally controlled fan: Silent operation at low and medium loads. Fan size is 4.72 inch
  • Semi-Modular: Make your builds and upgrades easy, with clean, great-looking results
  • 5 year warranty: Your guarantee of reliable operation that will last across several system builds


  • Output Wattage Is 550W
  • Wattage is 550W
  • Semi-Modular Design
  • Dimension is 5.91 x 5.91 x 3.35 inches
  • 120mm Cooler Fan
  • ATX12V v2.4 & EPS 2.92 Form Factor
  • 2 x PCI-E Connectors

Corsair CX5050 Power supply is rated at 550W continuous output. Corsair has released a new range of power supply to its stable, with the Corsair CX5050 – used to power a gaming rig. The Corsair CX5050 is rated at 550W continuous output, which is the maximum recommended for most modern gaming rigs.

Corsair says that the CX5050 can be overclocked, unlike many of its rivals. It is built with an aluminum alloy housing and copper heat spreader with internal parts sealed to improve thermal conductivity. Three high-quality fan headers are available on the Corsair CX5050 power supply. The bundled screws can be used to add up to five extra fans. The Corsair CX5050 comes with a three-year warranty.

5. Antec Earthwatts EA550G Pro


  • 550W Continuous power – Provides 550 Watts of continuous Power and backed by the continuous power for consistent and stable wattage to your system
  • 80 plus Gold Certified – ensures up to 92% energy efficiency to reduce your electricity bill Enhanced by Japanese capacitors that provide high efficiency and DC to DC stability
  • Advanced thermal Manager – Advanced low-voltage fan control for optimal heat and noise management combined with a silent 120mm fan for effective cooling
  • 7-Year – offers Antic quality 7-Year so you can be served by Antic incomparable technical support and customer service
  • Circuit Shield Protection – Industry-level protection with Over Current Protection (OCP) Over Voltage Protection (OVP) Under Voltage Protection (UVP) Short Circuit Protection (SCP) Over Power Protection (OPP) No Load Operation (NLO) Brown-Out Protection (BOP) Over Temperature Protection (OTP) and Surge & Inrush Protection (SIP)
  • Technical Features – 4x PCI-E connectors for multiple GPU semi-modular cable management 99% +12V rail stable output and ATX12V 2 4 compatibility


  • Output Wattage Is 550W
  • Wattage is 550W
  • Semi-Modular Design
  • Dimension is 5.91 x 5.91 x 3.35 inches
  • 120mm Cooler Fan
  • 2 x PCI-E Connectors
  • Weight is 4.27 pounds
  • 4-pin CPU power cable, 6-pin PCI power cable
  • 4-pin SATA power cable, four-pin USB cable
  • two 6-pin fan/power connectors

For too many years we have been stuck with ugly and bulky lead-acid batteries for running our home-built computers. I remember long ago, there was a time when I bought a power supply from Antec and an internal chip exchangeable in the tank. The form factor of those lead-acid batteries were big and bulky and heavy, and they were not really suitable for internal use. Soon, we will have a solution to our power supply needs, the Antec Earthwatts EA550G Pro

The Antec EA550G Pro power supply can provide up to 550W of continuous power, it’s about 8% faster than the classic A-EA750G. It features a 500W half-capacity mode that can run a PC, game console, hard drive and other devices while power consumption is down to 60% of its full capacity.

Although it looks like a standard liquid-cooled power supply, the unit can take 16 of 240mm standard fans and four 120mm fan/fans that can be mounted in the front to reduce the noise and thermal transfer. The box contains 4-pin CPU power cable, 6-pin PCI power cable, 4-pin SATA power cable, four-pin USB cable, two 6-pin fan/power connectors (fan mount), two cooling fans, filter holder, 12V DC adaptor.

6. Thermaltake Smart BX1 550W


  • 80+ BRONZE – Efficiency up to 88% and optimized for C6/C7 States Ready
  • CONNECTORS – 24 Pin x 1 / 4+4 Pin x 1 / SATA x 6 / PCI-E x 2 / Peripheral x 4 / FDD x 1
  • ULTRA QUIET 120MM FAN – Dynamic bearing fan s superior cooling performance and silent operation
  • MAIN JAPANESE CAPACITORS – Japanese capacitors provide superb performance and reliability
  • LOW RIPPLE NOISE – Ensure excellent power supply stability; keep performance-critical components, such as VGA card, to operate reliably for longer
  • SINGLE +12V RAIL DESIGN – Powerful 12V+ single rail supports today’s GPU demands supporting DC to DC design for non-stop usage with stable reliable performance
  • INDUSTRY GRADE PROTECTIONS – (OPP) Over Power, (OVP) Over Voltage, and (SCP) Short Circuit protections


  • Connector Type FDD Adapter, Sata
  • Output Wattage 550 Watts
  • Wattage 550 Watts
  • Form Factor ATX12V
  • Cooling Method 12cm Hydraulic bearing fan
  • Non-Modular Design
  • 5.91 x 5.51 x 3.39 inches Dimensions

Okay, so you’re in the market for a new power supply. You’ve had some time to think it over and have decided it’s the one you’re going to buy. In all your due diligence you’ve come across the Thermaltake Smart BX1 550W power supply and decided to make your purchase because it is very budget-friendly.

Thermaltake Smart BX1 550W has FDD adaptar and Sata support. This power supply is especially made for ATX pc cases. As this power supply is non-modular power suply, so you cannot deatach unused cable from the power supply,which I did not like about it. This is a 12V power supply.

A 12cm Hydraulic bearing fan has used to keep the power supply cool. This fan is very quiet. The fan sound will not be going to irritate you while gaming. It is an 80+ Bronze power supply. You also do not need to worry even if the power supply damaged, because it has 5 years of warranty.



  • 80 plus Bronze certified: With 85% and higher under normal loads
  • High-Quality Components: Japanese main industrial level 105°C-rated electronic capacitors, along with other high-quality components, resulting in stable wattage output and reliable performance.
  • Powerful Single +12V Rail: Provide a stable and reliable supply to Graphics Cards and other pc components
  • Hardware Protection: OPP(Over Power Protection), UVP(Under Voltage Protection), OVP(Over Voltage Protection), SCP(Short Circuit Protection), OCP(Over Current Protection)
  • 3 Years Warranty


  • Connector Type FDD Adapter, Sata
  • Output Wattage 550 Watts
  • Wattage 550 Watts
  • Form Factor ATX12V
  • Cooling Method 12cm Hydraulic bearing fan
  • Non-Modular Design
  • 5.5 x 5.9 x 3.3 inches Dimensions
  • Weight is 4 pounds

This power supply works very well with my intel and amd processor. But it’s the standard ATX form factor 12 volt single rail, 100 to 240 volt ac operates at 47 to 63 hertz. So it’s good for UK and USA. UK operates at 50 I operated at 60 hertz on my power grid.

140 mil long by 150 by 86. It has a 120 millimeter silent fan in there. 80 plus blonde bronze rated. Really nice to see you have overpowered protection of over voltage. Under-voltage protection and short circuit protection as well. As all your regulatory tags like I said you get your motherboard 24 pin. You get one cpu four plus four pin, you get your two pcie six plus two pin connectors six sata connectors and two molex four pins.

They use really good high quality Japanese capacitors, which I really appreciate of. This power supply is very budget friendly for building a budget gaming pc or a medium level gaming pc. I would also say that is is an non modular power supply. Cable colors are mixed of yellow red and orange.

All power supply description and a guide for how to use it has given in the backside of the power supply box. You can see a beautiful MONTECH logo upper side of the fan. The power supply cable might be ketchup and mustard, as some users of this power supply told me, but I did not feel like the power cables are.



  • 550w ATX gaming pc power supply
  • 80 plus Bronze certified, with 85% efficiency or higher and very stable voltage output
  • All cables are black and not ketchup and mustard-colored
  • Silent and durable 120mm fan
  • Full protection including OVP/UVP/OPP/SCP


  • Connector Type 6 plus 2 pin pcie
  • Output Wattage 550 Watts
  • Wattage 550 Watts
  • Form Factor ATX12V
  • Cooling Method 120mm colling fan.
  • Non-Modular Design
  • 5.9 x 5.5 x 3.3 inches Dimensions
  • Weight is 4.02 pounds

Last but not least ARESGAME AGW550. This series of power supply focus on providing quality power supply and a budget price range. This power supply slots in as a good starting place for a budget gaming build according to ARESGAME, the power supply is 80 bronze certified typically reaching 82 to 85 power efficiency from about the 20 load range.

All the way up until 100 load this psu does not have modular power supply cables but that’s to be expected in this budget price range. What i noticed and really liked was that while the psu was not modular there was no ketchup and mustard cabling. All the cables are sleeved in black this adds a sense of premiumness to the power supply destipute.

The power supply features a 120 millimeter fan that was relatively quiet during my testing the honeycomb fan frame design. It is also supposed to help aid in cooling during periods of heavy load or longer gaming sessions included with the power supply.

This is a standard power cable, a larger cable tie four mounting screws and four smaller cable ties and in case anyone’s wondering this power supply measures in at just under four pounds. Total the power supply comes in at about 150 millimeters wide 140 millimeters long and about 85 millimeters. High affording this model good compatibility with most atx cases.

How Choose A Best 550w Power Supply [Full Detailed Guide]

Power supply units are a big investment as we all know. Therefore, you want to make sure you buy a quality one that will last a long time and won’t require any maintenance. The 550W PSU is what is used in the best gaming rigs. Therefore, you must choose the right one.

To begin with, you can use the wattage settings on the Amazon. To do that, go to the power supply unit type, and then select the one you want to view the specifications of. In this way, you’ll be able to see the total wattage, which is much less than 100% full, so it’s not a huge amount.

Once you’ve seen the specs of a power supply unit, you can buy it on Amazon at a pretty great price with a 10-year warranty. Before you do that, though, make sure that it has the capabilities you need it to have, which is a solid warranty. Some power supply units have a warranty of three years while others can be gotten from four to five years.

While some of these power supplyare old, like the Corsair CX550, you can use the fact that they’re still useful to the manufacturer to save money. Usually, these power supply have been working for a few years, which means that you can buy them for cheaper and get high performance. Then they would go on the used market. If you’re willing to put up with one or two design flaws to get a better warranty, they’re worth the money.

As always, though, before you buy any product, take the time to read the reviews and comments. Make sure that the power supply unit is compatible with your computer and that you’re getting the right wattage. Then, you’ll be happy with your purchase.


How Much Power Does A 550w Power Supply Draw?

Yup, it uses at least 550 watts. And yes, you have to be really careful with the fan and the power supply on sale

How Much AMP Does A 550W Power Supply Draw?

A 550w power supply draws average 5 AMP.

Is 550W Power Supply enough for RTX 2060?

Yes. A 550w power supply is enough for RTX 2060. But I would recommend you for getting a 650w power supply for RTX 2060.

Is 550W Power Supply enough for GTX 1660 Super?

Yes. As we know GTX 1660 supper need only 450w power supply, so a 550w power supply is enough for GTX 1660 Supper.

What Is 80 Plus Bronze Power Supply

Our 80 plus Bronze Power supply feature an industry-leading 80 PLUS Bronze efficiency rating, 80 PLUS Titanium efficiency, 20V to 40V power range and a 9W TDP.

Is 550w Power Supply Enough For 3070?

No. A 550w power supply is not enough for 3070. You need to use minimum a 750w power supply for 3070

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