7 Best 650w Power Supply In 2021 [Honest Review]

A 650w power supply is enough for a minimal gaming pc. You can run any RTX 20 series graphics card with a 650w power supply. It’s always good to have a powerful and efficient power supply in the desk or desktop PC. 650w is enough for any modern gaming rig with modern graphics cards. It also saves a bit of money for budget gamers.

A few days ago I have bought lots of 650w power supply. Most of them did not perform well with my gaming pc. But only 8 of 650w power supply work very well with gaming pc that has an RTX 2070 super. I have asked other users of these power supplies. They also told me that these power supplies are also working very well with their gaming pc. So have decided to give my review on all of these power supplies.

If you are in then I would say getting the Corsair RMX 650W, because it is the best 650w power supply for a gaming pc.

Best 650w Power Supply

Image Name Brand Power Supply Design Dimensions LxWxH Weight Shop On Amazon
backpac Corsair RMX 650W Corsair Full Modular 6.29 x 3.38 x 5.9 inches 3.68 Pounds Check Price
backpac ASUS ROG Strix 650W Asus Full Modular 6.3 x 5.9 x 3.4 inches 1.75 Kilograms Check Price
backpac Corsair CX 650W Corsair Semi-Modular 5.9 x 5.5 x 3.38 inches 1 Pounds Check Price
backpac Cooler Master Master Watt 650W Cooler Master Semi Modular 5.51 x 5.9 x 3.38 inches 63.21 Ounces Check Price
backpac PowerSpec 650W Power Spec Semi Modular 12.24 x 8.39 x 4.09 inches 5.17 pounds Check Price
backpac ARESGAME AGV650 ARESGAME Non Modular 5.9 x 5.5 x 3.3 inches 3.56 Pounds Check Price
backpac EVGA 650W N1 EVGA Non Modular 5.9 x 5.5 x 3.3 inches 5.51 x 5.91 x 3.35 inches Check Price

1. Corsair RMX 650W


  • 80 PLUS Gold certified: High-efficiency operation for less excess heat and lower operating costs
  • 100% All Japanese 105 capacitors: Premium internal components ensure solid power delivery and long term reliability
  • Zero RPM Fan Mode: Virtually silent operation at low and medium loads
  • Fully Modular: Make your builds and upgrades easy, with clean, great-looking results
  • Ten-year warranty: Your guarantee of reliable operation that will last across several system builds


  • Brand Corsair
  • Output Wattage 650 Watts
  • Form Factor ATX12V
  • Wattage 650 watts
  • Power Supply Design Full Modular
  • Item Dimensions 6.29 x 3.38 x 5.9 inches
  • Item Weight 3.68 Pounds

Right off the bat, Corsair has something different with their RMX 650W. It’s an 80 Plus Gold-certified, 16 Phase / 4 Pin Low Profile 7.8 Amps circuit. It’s packed with Phase Foretelling technology that, using your motherboard’s built-in QPI port, will provide the most stable and consistent power out of any power supply on the market.

In the case of the Corsair 80 Plus Bronze, they also have an impressive 5 Year Warranty, with a chance to extend the warranty by a further 3 Years for the enthusiast consumers who need Corsair’s most stable power. As this is a full modular power supply, you can easily remove unused power cables.

If you read the other reviews you should know that the Corsair RMX line have become well known in the High-end community because of their superior build quality, versatility and the iconic green chassis. The Corsair RMX650W specially designed to be good for gaming.

2. ASUS ROG Strix 650W


  • 650W 80 Plus Gold certification for energy efficiency, built with 100% Japanese capacitors for stability and durability
  • 0dB cooling with dustproof IP5X Axial-tech fan and integrated ROG heatsinks for cooler operation
  • Fully modular cable design including 1x motherboard 24/20 pin, 2x CPU 4+4 pin, 4x PCI-E 6+2 pin, 8x SATA and 3x Molex cables
  • Magnetic ROG logo and stickers to customize the visible side of your power supply
  • 10-Year for core product operation and peace of mind


  • Series ROG-STRIX-650G
  • Brand ASUS
  • Connector Type 6_plus_2_pin_pci_e, Sata
  • Output Wattage 650
  • Form Factor ATX
  • Wattage 650 watts
  • Cooling Method Air
  • Power Supply Design Full Modular
  • Item Dimensions 6.3 x 5.9 x 3.4 inches
  • Item Weight 1.75 Kilograms

ASUS ROG Strix 650W power supply has a solid steel heat sink and efficient fan that ensure stable and cool temperatures. It provides ample power to your system for high performance at all times. This power supply has a lifetime warranty and is tested and certified to the same level as NVIDIA’s most premium power supplies.

ASUS ROG Strix 650W provides 1000RPM at 24v/46v input voltage. In addition, the ASUS ROG Strix 650W has a reliable PCI-E power connector and a stable 240-pin ATX input. What’s more, the power supply delivers 24A at 12v and 18A at 24v. This power supply can deliver 40W for CPU and 36W for GPU without compromising on noise.

This power supply is expensive for some gamer. But I have found this power supply worthy for its money. The power supply performance is just awesome. Specially cooling. This power supply is made for ATX pc cases.

3. Corsair CX 650W


  • 80 PLUS Bronze certified: High efficiency operation for less excess heat and lower operating costs
  • Thermally controlled Fan: Silent operation at low and medium loads; MTBF hours: 100,000 hours
  • 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
  • Continuous output rated temperature is 40 degree Celsius. Fan size-4.7 inch


  • Brand Corsair
  • Output Wattage 650
  • Form Factor ATX
  • Wattage 650 watts
  • Power Supply Design Semi-Modular
  • Item Dimensions 5.9 x 5.5 x 3.38 inches
  • Item Weight 1 Pounds

An exceptional choice for an exceptional price, that’s Corsair’s CX650W. Cheaper alternatives may be faster but not that much quieter or pack fewer features. What kind of PC do you need to build a decent gaming PC? If you have a console-sized budget, you’ll need a machine that’s all-powerful and quiet. This is the Corsair CX650W, a budget-priced 500W power supply that manages to offer all the performance and value you could want.

Corsair peripherals are the logical next steps in the development of high-quality PC accessories. Their form follows function rather than requiring a user to care about technology. . It’s quieter than some competing units, and cooler too. That’s all thanks to the impressive Radiator line Corsair includes inside this PSU, including the Corsair CX650w radiators.

They lower the case’s temperature by reducing the speed of the motherboard’s fan and reducing the speed of the video card’s video chip.

4. Cooler Master Master Watt 650W


  • 650W semi-modular ATX power supply
  • Semi-fanless up till 15% load
  • Temperature controlled 120 millimeter fan with dustproof LDB bearing
  • 5 years
  • Dc-to-dc circuit design for stable voltage output
  • Thicker 16AWG PCIe cables to support the latest graphics cards


  • Brand Cooler Master
  • Output Wattage 650 Watts
  • Form Factor ATX
  • Wattage 650 watts
  • Power Supply Design Semi Modular
  • Item Dimensions 5.51 x 5.9 x 3.38 inches
  • Item Weight 63.21 Ounces
  • Fan Size 120 Millimeters

Cooler Master Watt 650 Watt is a latest power supply from Cooler Master is a very affordable, high-quality power supply. It’s been a long time coming, but Cooler Master has finally overhauled its venerable line of power supplies. The company’s low-profile, low-maintenance offerings are some of the best available, with the new Classic 650W taking things a step further.

The power supply itself comes in this all black look with the cooler master branding in the middle. In silver 120 millimeter silent fan which is included for intake for silent cooling. This fan is look dynamic bearing or LD be for a longer lifetime. Looking at the sides here we have more information on the EC input DC output and total power, and also a display of certifications.

This power supply comes with a single +12V rail and a single +12V to +5V rail. One of the rails is front-mounted, which is unusual, but the design makes a lot of sense when it comes to board-to-rail compatibility. The rails are connected to the +12V connectors with two 12-rated cables. This is another potential cost-saving design decision.

5. PowerSpec 650W


  • UL & 80+ BRONZE CERTIFIED: The PowerSpec semi-modular power supply has an 80 Plus Bronze and UL certification. 80+ Bronze boasts an 85% minimum efficiency at 50% load.
  • QUIET & COOL: 135mm diameter Fan efficiently cools. This solves potential thermal and noise problems for your computer power supply.
  • MAXIMUM SAFETY: Universal AC 115-230V /10Ainput with 50-60Hz frequency for wide-ranging use, protect your components and data from unexpected unstable voltage damage.
  • DURABLE AND RELIABLE: These premium Japanese capacitors ensure a longer lifespan and eliminate explosion & electrolyte leakage issues.
  • STABILITY: This PSU features 650 Watts of output power, active PFC design with single +12V output rail providing strong and stable power to computers.


  • Brand PowerSpec
  • Output Wattage 650 Watts
  • Form Factor ATX12V, ATX
  • Wattage 650 watts
  • Power Supply Design Semi Modular
  • Fan Size 135 Millimeters
  • Maximum Input Voltage 230 Volts
  • Minimum Input Voltage 115 Volts

PowerSpec 650W is an RGB 650w power supply in my list. PowerSpec 650W features 80+ bronze. This power supply is semi-modular. this power supply is made for ATX pc cases especially. The fan is not such noisy comparing to other power supply. This fan size is 135mm. Honeycomb ventilation design for optimal heat dissipation.

This is a cheap power supply on the market, which is best for budget pc builder. This power supply output wattage is 650 watts, maximum input voltage is 230 volts, minimum input voltage is 115 volts. The capacitors are from Japan, means this power supply uses Japanese capacitors which are the best capacitor for a power supply.

You gets a long time of 5 years warranty, with this power supply. All of the power cable color is same. The RGB lighting is useless because no one pay attention for a pc power supply RGB because it is not such visible to anyone.



  • 650w 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


  • Brand ARESGAME
  • Connector Type 6_plus_2_pin_pci_e
  • Output Wattage 650
  • Form Factor ATX
  • Wattage 650 watts
  • Cooling Method Air
  • Power Supply Design Non Modular
  • Item Dimensions 5.9 x 5.5 x 3.3 inches
  • Item Weight 3.56 Pounds
  • Fan Size 120 Millimeters

ARESGAME AGV650 is not a modular power supply. But for me that is okay. I like how the cabling is sheathed in this black bushing. Which frankly is a standard in most power supply. The 120 millimeter fan is quiet and I don’t expect users will hear it over the more powerful fans that are found in their graphics cards.

No there is not any RGB lighting but frankly, that is often a useless feature, unless maybe the unit is mounted on the top of the case. Remember most cases are placing the power supplies at the very bottom the expected connectors will be found including Molex SATA and PCIe 6 plus 2 connectors.

The cable length is more than enough for most mini and medium atx cases using this unit in the corsair 200r was no problem. Included is also a user manual power cord and the expected screws for mounting the unit some cable ties are also included, which can be handy in the review of errors games website it appears that their current lineup.

7. EVGA 650W N1


  • Fan Size/ Bearing: 120mm sleeve bearing quiet and intelligent auto fan for near silent operation
  • Heavy duty protections, including OVP, UVP, OCP, OPP, and SCP
  • 2 year warranty & EVGA 24/7 technical support
  • Input Voltage:100 – 240 VAC


  • Brand EVGA
  • Output Wattage 650 Watts
  • Wattage 120
  • Item Dimensions 5.51 x 5.91 x 3.35 inches
  • Item Weight 1.4 Kilograms
  • Fan Size 120 Millimeters
  • Minimum Input Voltage 100 Volt

The EVGA N1 is a low-performance PSU with inaccurate OCP and OPP and weak effectiveness. The EVGA N1 is a low-end PSU with reduced overall efficiency, reduced effectiveness, The loud procedure, and low-end components at its internals.

It managed to deliver, However, complete load at 36 levels Celsius, and its transient reaction at 12V is acceptable, While the hold-up time is much longer compared to what the ATX specification requires. Its development quality is reduced, and you should beware not overloading its +12V ráil since OCP Is not properly set up.

This is definitely not stuff for our finest PSU picks article, And you should obtain a Corsair or rather. If you can pay more, You should also take a look at the Colder Grasp MWE Bronze with comparable capacity. The EVGA N1 me consists of three participants with capabilities varying from. Overall, this is a medium quality power supply.

How To Choose Best 650w Power Supply [Buying Guide]

You might have some doubts about how to choose a 650w power supply. It is quite difficult to choose a power supply. You will have to learn how to choose a 650w power supply before purchasing it.
I have purchased about 15 PSUs in the past. I had a few different suggestions on how to choose a 650w power supply.

So, I will write about those suggestions. Please do note that I am not an expert on PSUs, so I am just making an educated guess at what you should know before buying a 650w PSU. I have found out that most people who buy PSUs, they are not aware of how to chose a 650w PSU.

I think they have to learn before purchasing Power supply. I am an IT Professional, so I knew how to choose a PSU. The main goal of a 650w power supply is to supply the maximum power your CPU needs, the rest the voltage and wattage will be reduced, so to reach maximal power for a CPU.

Buying a quality PSU should be as easy as getting a new PC case. So what should you be looking for? Firstly, you should make sure it’s a good fit for your rig. A good power supply unit should be as efficient as possible, and fit into as small a space as possible. It’s also important to know that a unit with a 4+ star rating isn’t necessarily any better than a unit with a 3 star rating.

In fact, a 3 star unit might be much better than a 4 star unit. Choosing a 650w PSU Choosing a 650w power supply unit will probably be slightly more complicated than buying a new case. This is because 650w power supplies differ slightly from one another. The reviews are very important here, and you need to ensure you know what you’re getting. There are a number of good sites that you can use for advice.

What To Consider While Buying The Best 650w Power Supply

Here is something you need to consider and look for before buying a 650w power suppply.


Here’s where we get into real nitty-gritty, although whether you want something in the 550-750W power range or a 1kW PSU is going to be a personal choice. But, in essence, the difference between these two power supplies are that a 1kW PSU offers roughly 70% of your full power capacity for a given load (there are so many variations of our benchmarking method for the rigs in our reviews that this varies from one review to the next), and a 650W PSU has roughly 65% of your full capacity.

However, the 650W power supply we use in the running of our reviews (aside from the one we use as our reference at the top of the page, which we also like), is our standard 550W PSU. We use a “standard” power supply in order to ensure that the machine we build in the lab.

650w is a range of capacity and wattage, which measures the total power you can draw from a power supply unit. Most users need less power than a 1kW PSU. But most users don’t require that level of power. 650W power supplies fit into the Low power/high capacity (LP/HPC) power supply segment. In this category, you’ll find power supplies which draw less than 650w, but have large enough expansion slots to draw a lot of power and then run at their maximum clock speeds without compromising on the energy efficiency.

Some 650w PSU’s come with an additional AC power input, that can be used to supply the entire system with a constant 12V (for hybrid SLI configurations) or 12V/22.5V (for PCIe slots) power. These supplies usually have power supply units that are user-replaceable.

While some people think that the amp rating only refers to maximum power, in truth it’s a measure of the average power of the supply during an ordinary gaming session. The higher the wattage, the more power you can expect. The minimum wattage usually recommended by the manufacturers of power supplies is 80-100W. Keep in mind that the higher the amp rating, the higher the average power and the more expensive the power supply will be.

Regulation The higher the power rating, the better the regulation is. A good regulation ensures that all the components of the power supply don’t create excess heat that can destroy the components. While all the components are regulated, the regulator prevents the CPU from blowing itself up by exceeding the max PC power for extended periods of time.

600W: For entry-level gaming systems, 750W or above is ideal. Power Error Resistance 95% or higher is desirable, ideally over 95%. Overcurrent Protection Not as important as overcurrent protection, but close. Frequency Range Outer voltage of 1450-1750Vdc is the minimum to avoid the risk of premature failures due to overload.

The term 650w power supply refers to the maximum amperage your power supply can supply. It is an important consideration when selecting a power supply for your gaming PC, as it affects the maximum wattage your PC can draw and therefore the maximum performance your PC can attain. A common rule of thumb is that you want your power supply to supply between 300 and 400w.

Why? Your power supply should supply at least 20% of the power it takes to run your PC. If your power supply supplies only 150w, you are only getting 15% of what it takes to run your PC. So you need a power supply that supplies at least 300w to achieve 20% or more of the power your computer needs.

Outside this range will result in the PCB overheating, which may shorten the lifespan of your PSU. Overcurrent Protection (overcurrent limiting) Only on PSUs with such protection is this extremely important, as the average 50% overcurrent protection standard of modern PSU does not protect against most overcurrents in modern PC systems. You’ll want to look for 150v tolerance for overcurrent protection.

As this is a 650w power supply review so you should buy a 650w power supply.

Continuous And Peak Power

Fan size and speed Amount of CPU power delivery Radiative cooling Stability Electrical and power regulation Power factor correction (PFC) Cost Watch the video and learn how to choose the best 650w power supply for your gaming PC.

End of life ratings and refurbishment programs The bottom line Here at Overclockers.co.uk, we take our duties as a retailer seriously, so we also take our duties as a customer seriously. A good power supply is vital in a computer that is designed to do serious gaming and it is vital that you make an informed decision on the kind of power supply that is right for your gaming PC.

That is why we asked Rob Bartholomew from Technikatech to help us out with his advice on how to choose the best power supply for gaming.It should come as no surprise that Rob is a professional and is a recognized expert in the field of PC hardware.


Let’s be honest here, but not everyone will have the option to upgrade their PSU. Whether it’s a matter of a motherboard on your gaming pc being non-MOSFET compatible or simply not having enough space on your desktop case, 650w is going to be the most popular power supply size on the market. A 650w power supply may not be able to offer the power of a 1600w power supply, but this is also offset by the fact that it is a lot cheaper to use.

Also you can get really awesome cooling accessories for 650w systems. There’s also some power supply manufacturers which offer a LOT more power at a reduced price, this is a great deal and it’s usually a great idea to look into these. Exhaust Fan Usually the case for air cooling, you want a cool air flow and a well-designed, user-friendly fan.

Modular Or Non-Modular?

Modular power supplies let you upgrade or replace components on the PSU, such as fans or circuit boards, while a fixed modular PSU gives you only the internal power supply, and does not allow for the installation of additional components.

Fixed modular PSU have more energy efficiency, which is more important in the end. Also, more energy efficiency means higher output current. In terms of output current, an 850W modular PSU is more efficient than a 900W of a fixed design. Now that’s not a big deal for desktop and laptop PCs, where the usage of power is very light. however, the increased cost of modular designs means that you’re not getting a big bang for the buck.

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