Quietest Power Supply

A power supply is one of the most important components for a build, yet the craze of performance improvement somehow overshadows it through other components. It might not add up to your frames per second, and neither does it add to the aesthetics, but it is still as crucial as the other main components; in fact, it is the one that keeps the others up and running smoothly and achieving their full potential. Often, the importance of a Power supply is neglected, thus causing power issues and even putting other components’ lives at risk in the long run.

Certain factors determine a suitable quietest PSU for your Rig. Among these factors, the first one is the provided wattage power which should be according to the needs of your build; all of its components will add up to a power consumption level which should be achieved accordingly to keep things running while avoiding any failures that can be caused due to power shortage. The type of connectors required, which either will be a 20+4 or 6+2 to connect with your motherboard, most PSUs will also offer a 4-pin auxiliary 12V connector for motherboards, and some will have an 8-pin that doubles as a 4-pin.

The latest PSU and A high-end GPU will require separate power connectors for themselves, so you might need to keep that in mind. The price tag and the power-efficient are also equally important. As the community shift towards more and more hybrid technology, it is about time that you should look for a power supply that makes virtually no sound at all. For this purpose, we have prepared a complete guide that comprises the Quietest Power Supply while keeping the best quality and performance in mind.

Quietest Power Supply at a Glance:

  1. Corsair TX-M 550W
  2. BeQuiet! System Power 9 600W
  3. Silverstone Nightjar SST-NJ450-SXL 450W Platinum
  4. Corsair RMi 850W
  5. Bitfenix BF450G
  6. Corsair RM550x
  7. Seasonic SSR-600TL
  8. Corsair AX1000

The Quietest Power Supply You Can Buy Today

Corsair TX-M 550W
Corsair TX-M 550W (Image credit: Amazon)

Corsair TX-M 550W

Best ATX Quiet Power Supply


Brand: Corsair | Form Factor: ATX | Output Wattage: 550W | Efficiency Rating: 80 Plus Gold | Modularity: Semi-Modular


Exception power-saving capabilities

Quality control

Meet maximum power output at 50°C

Comes with many accessories


Material Quality isn’t so good

The cables that come with it are short to use

On the top of the list, we have Corsair’s TX-M 500W. The TX-M 550W is considered an all-around adequate choice for most builders. It has an excellent build quality, along with exceptional gold efficiency, super tight voltages, and a semi-modular cable set. The gold efficiency and the semi-modular cable set of the TX-M 550W ensure easy installation, great energy efficiency, thus having exceptional power-saving capabilities and low noise, causing no harm to your peaceful environment at all which makes it the Quietest Power Supply. The 550 wattage is ideal for the average consumer, including casual gamers. The TX-M 550W is a semi-modular PSU, which means that the basic 24-pin ATX and 4+4 pin CPU power cables are hardwired to the unit, but the rest of the cables are detachable.

All of the cables are flat and nicely painted black, which can help cable management and overall system aesthetics, provided if you choose to showcase the build through a glass panel. In which case, the chassis is also has a very minimal and simplistic design, painted satin black, with the brand logo and specification stickers to the top and side, which are also designed according to the whole get-go of minimalism. The TX-M 550W is a perfect choice for ATX-form factor builds due to its adequate size making it the best ATX Quiet Power Supply. Conventionally designed, the rear side comprises an AC receptacle and a small on/off switch.

The TX-M 550W comes packed with a powerful high-pressure fan, a 120 mm NR120L, which perfectly sits the largest possible size for an ATX-form chassis. The fan features a rifle-bearing engine and can push up to the maximum speed of 1500 RPM. The TX-M 550W uses the typical circuit design to maintain stability, so no surprises there either. The 80Plus efficiency is powered by highly efficient components, which conveys excellent performance of all sorts of users. The ventilation system and the heatsinks are adequate for the given design and perfectly okay for the given price tag.

BeQuiet! System Power 9 600W
BeQuiet! System Power 9 600W (Image credit: Amazon)

BeQuiet! System Power 9 600W

Best Be-Quiet Quiet Power Supply


Brand: Be quiet! | Form Factor: ATX | Output Wattage: 600W | Efficiency Rating: 80 Plus Bronze | Modularity: Semi-Modular


Super quiet power supply

Cheap price

Keeps the unit cool

State performance for PSU


Cheap capacitors

Not made for extreme load

Next up, we bring you the rock-solid performer, BeQuiet! System Power 9 600W. System Power 9 has proved itself to be highly reliable and power-efficient over time. Just as they promise and their name suggests, the quietness is unmatchable and that is exactly why we have labeled it the best Be-Quiet Quiet Power Supply. All that and much more at a meager price, making it the best choice for a price-conscious builder looking for great performance and efficiency. With an upgrade from the previous PSUs in the series, System Power 9 uses solid caps for increased reliability and a GTD (gas discharge tube) replacing the MOVs providing over-voltage protection to ensure the safety of the components under all circumstances.

The rear of the System Power 9 is as conventional as it gets with only a typical AC receptacle and an on/off switch. The exhaust grille, however, doesn’t cover the entire side. To the front side, the modular board only includes five sockets. Three of them are for peripheral cables, while the remaining two are for PCIe cables featuring two connectors each. All of the native cables are fully sleeved, which is more than a budget PSU can offer. The overall design is also quite aesthetic for the needs of the showcase, painted fully black with a decently grilled fan and minimal stickers, and an embossed logo to the side makes it quite attractive.

In addition to powerful 3.3 V and 5V rails, which are quite stable with the help of the advanced DC-to-DC conversion technology, it is the two 12 V rails rated at 28 and 22 A, which are truly impressive due to their output maximum abilities. Multi-core CPUs, dual GPUs, or RAID setups will all be powered flawlessly with this best silent PSU – perfect for all ranges of builders.

Silverstone Nightjar SST-NJ450-SXL 450W Platinum
Silverstone Nightjar SST-NJ450-SXL 450W Platinum (Image credit: Amazon)

Silverstone Nightjar SST-NJ450-SXL 450W Platinum

Best Silent Quiet Power Supply


Brand: SilverStone Technology | Form Factor: Small | Output Wattage: 450W | Efficiency Rating: 80 Plus Platinum | Modularity: Full Modular


Excellent reliability

Exceptional performance and noise dumping

Fanless thermal solution


Expensive than rivals

Coming up next best silent psu is the Silverstone Nightjar SST-NJ450-SXL 450W Platinum. With its unusually long name, the SST-NJ450-SXL has a surprisingly different way of doing things, including passive cooling; yes, it is entirely passively cooled. SST-NJ450-SXL is a fully modular power supply with all detachable cables, including the 24-pin ATX cable. The provided cables are flat and short, fair enough for an SFX-form factor. The uniquely elongated chassis is essentially a large heatsink with no air vents at all. Due to their unique shape, they have a specific SFX-L form factor, making them unable to fit in a tightly regular space of an SFX PSU; the size is also comparatively heavy. 

The rear side of the SST-NJ450-SXL features a conventional AC receptacle and an on/off switch, but there is no exhaust grille due to the unique ventilation system of heatsinks all around. Instead, the specification sticker has been moved to the rear side to avoid obstruction on the heatsinks up top. On the front, we find the modular cables; all of them are cables except for the PCI-E device connectors, which are blue. The direction of each connector is indicated on a sticker right below it. However, the SST-NJ450-SXL offers connectors for dual-GPU, but it would not be advisable to do so with the given power.

The OEM used by the SST-NJ450-SXL is by Enhance Electronics. Enhance is not particularly popular amongst enthusiasts because other OEMs often outperform top-tier designs in both capability and budget. Still, they do offer exceptionally high quality and reliability. With the unique design, the SST-NJ450-SXL does offer ultra-quietness and excellent performance and that is what makes it the best Silent Quiet Power Supply, but it is not something for beginner-level builders to be playing around with.

Corsair RMi 850W
Corsair RMi 850W (Image credit: Amazon)

Corsair RMi 850W

Best Value Quiet Power Supply


Brand: Corsair | Form Factor: ATX | Output Wattage: 850W | Efficiency Rating: 80 Plus Gold | Modularity: Full Modular


Excellent for noise controlling

Premium internal components

Ten years of warranty

Fully modular


Slow speed of the fan

The minimum distance between peripherals connectors

Moving on to the fairly equipped and highly powered Corsair RMi 850W. The Corsair RMi 850W is moderately priced and features, just like many of their other PSUs, a tight voltage control, virtually quiet operation, and a fully modular cable set which makes it the best value Quiet Power Supply. Corsair RMi 850W is a great choice for high-end gaming builds that demand decent voltage and energy, along with adequate reliability. On the plus side, Corsair’s iCUE technology makes things a lot easier by managing rail modes, fan speed, and monitoring the performance of the PSU directly from your desktop. 

Corsair RMi 850W is designed aesthetically; the rear side is covered fully by an exhaust grille, except for the little space where the AC receptacle and the on/off switch are located side-by-side. The front side is quite busy with space for connectors; the writing indicates the right port for each. The new Corsair link functionality requires two connectors – a mini USB and a 4pin. The 4pin is used to interface it with a Link Commander and the mini USB to jack it into the motherboard if the link commander is unavailable. The cables are mostly flat, with traditional sleeving on a few.

Design-wise, it is quite appealing but simple; the top is plain black steel with a specification table on the rear side. There are brand logo stickers on either side of the unit; no other color has been brought in except black and white. The bottom side, where the fan looks out, is nicely grilled, with parallel stripes leading from the grill towards the cover and all the way to the edges. The zero RPM fan mode allows high-energy efficiency by turning the fan off at low to medium loads for virtually silent operation. A removable sticker hangs over the AC receptacle, warning about the fanless mode. The configurable rail modes are another plus feature, which allows toggling between multi-rail and single-rail operation.

Bitfenix BF450G
Bitfenix BF450G (Image credit: Amazon)

Bitfenix BF450G

Best 450W Quiet Power Supply


Brand: BITFENIX | Form Factor: ATX12V | Output Wattage: 450W | Efficiency Rating: 80 Plus Gold | Modularity: Full Modular


Best budget builder

Compact and quiet power supply

Quite easy to install

90+ efficiency at 40 to 60% load


Some buyers didn’t like the flat cables

Not a modular

Another nice addition to our list of Quietest Power Supply is the Bitfenix BF450G, one of the best choices for budget builders with high-end performance, adequate efficiency, and quiet operation. Bitfenix BF450G holds energy efficiency certifications like 80 PLUS Gold and ETA-A and LAMBDA-A++ badge Cybernetics, which approves the super quiet operation of this power supply. The Bitfenix BF450G is impressively compact; it can almost fit into any given space, compensating for the fixed non-modular cables that come with it. Three +12V rails facilitate up to 450W of combined power output and that is why it’s called the best 450W Quiet Power Supply. The minor rails are sufficient with a little help from the DC-to-DC conversion technology; while the 5VSB rail is supposed to deliver 2.5A, it delivers quite more than that.

The rear side of the Bitfenix BF450G is semi-covered with an exhaust grille, including an AC receptacle and an on/off switch to the corner of one side. There is a typical cable outing to the front. The design is minimalistic and compact; it has a brand logo sticker to one side and plain black steel to another. The fan grille is almost square-shaped, with a logo sticker in the middle of it. The fan itself is manufactured by Martech, which states that the 120mm FDB DF1202512SEMN fan utilizes a rifle bearing. The quality badges cover the reliability of the fan and its performance. 

With 5 years warranty, the Bitfenix BF450G offers industrial level protection is tested and approved, along with LLC Resonant Topology to minimize the power losses and maximize efficiency during voltage conversion. The high-quality 100% industrial Japanese capacitors, along with a custom 2oz pure copper and double layer PCB paired with high-quality components, rates the Formula gold Series at a Power Factor of 0.99 with an efficiency of up to 90+ at a 40% to 60% load.

Corsair RM550x
Corsair RM550x (Image credit: Amazon)

Corsair RM550x

Best Budget Quiet Power Supply


Brand: Corsair | Form Factor: ATX | Output Wattage: 550W | Efficiency Rating: 80 Plus Gold | Modularity: Full Modular


80 Plus Gold

High-end electrolytic capacitors

Fully modular

Overall great performance


Only one EPS connector

SATA cables don’t fit accurately

Another one of our favorite Corsair PSU is the Corsair RM550x. Once again, with high-quality components that allow for tight voltage regulation, low-noise operation, and the energy-efficient unit, Corsair brings another exceptionally powered PSU at a moderate price. Being the cheapest one among all the other products makes it the best budget Quiet Power Supply. The Corsair RM550x’s conventional corsair designs exhibit class and aesthetics for enthusiasts. The compact size and fully modular cables of the Corsair RM550x complement its overall features. A popular feature of the RMx series is the low-noise fan operation, which is achieved by the specifically designed fan curves, and the Zero RPM mode, which restricts the fan from operating at low and medium load processing to eliminate fan noise.

The fully modular cables of the Corsair RM550x allow for clean and tidy management and can easily blend in with black chassis. The compact conventional design of the latest corsair power supplies is displayed here, with a complete exhaust grille to the back, the necessary AC receptacle, and the on/off switch; either side of the PSU is covered with an elongated brand logo and model number decals. The front is laced with seven sockets. The bottom side is where the fan locks out; the 135mm rifle-bearing fan, colored in a greyish-white, is covered by a parallel grille, with grille-like lines leading from the fan to almost near both sides.

Corsair RM550x only uses the Japanese electrolytic and polymer capacitors in the RMx models, guaranteeing high reliability over time. The minor rails are capable enough for a 550W PSU, and the single +12V rail can deliver almost 46A, so it will easily support most high-end GPUs. The 5VSB rail is more powerful comparatively, offering 3A of maximum current output. The length of the cables is quite satisfactory, and the distance between most connectors is enough to avoid compatibility problems, except for the peripheral four-pin Molex connectors. 

Seasonic SSR-600TL
Seasonic SSR-600TL (Image credit: Amazon)

Seasonic SSR-600TL

Best Modular Quiet Power Supply


Brand: Seasonic | Form Factor: ATX12V | Output Wattage: 600W | Efficiency Rating: 80 Plus Titanium | Modularity: Full Modular


12 years of warranty

Fully modular

Effective passive cooling

Top-notch quality and durability


The difference between peripheral connectors are minimum


Coming up next is another powerful PSU by the Seasonic, the Seasonic SSR-600TL. The second last PSU on our list features no fan; designed with an all-around honeycomb grille; the SSR-600TL is fanless. Eliminating fan noise from the equation, the Seasonic SSR-600TL makes no noise and operates super silently. Its all-around honeycomb grille ensures cooling. The SSR-600TL also has the highest power output in the fanless power supply market. The neat circuit innovative design ensures thermal control and stable power output. With 80 PLUS Titanium certification and ETA-A+ in the Cybernetics program, the Seasonic SSR-600TL is exceptionally efficient with its 94 % efficiency at 50 % system load.

Along with the open ventilation design, the cooling on the PSU is also achieved by a passive cooling radiator. The rear offers the typical AC receptacle and an on/off switch on a little space amidst the expansive grilling. The font also has to grill on the top, while the bottom half is covered with two lines of sockets, as the PSU features a fully modular cable set which is why it’s the best modular Quiet Power Supply, making it much easier for management and the unobstructed grille design. There are many peripheral connectors with a nice addition of two EPS connectors and four PCIe ones. The minor rails aren’t solid, offering up to 100W of merged power. Luckily, modern systems only utilize the 5V and 3.3V rails lightly.

But on the other hand, the +12V rail is plenty capable with a 50A maximum current output rating. Seasonic’s 5VSB rail has a somewhat standard capacity. The power distribution is unified with a single +12V rail, so no issues there, either. With the brand-new Micro Tolerance Load Regulation, Seasonic SSR-600TL keeps the output voltage in a very tight range, achieving under 0.5 % load regulation, which delivers exceptional electrical performance and stability. The Seasonic SSR-600TL is one of the best passive cooling power supplies out there; the only small push-back is the price tag.

Corsair AX1000
Corsair AX1000 (Image credit: Amazon)

Corsair AX1000

Best Gaming Quiet Power Supply


Brand: Corsair | Form Factor: ATX | Output Wattage: 1000W | Efficiency Rating: 80 Plus Titanium | Modularity: Full Modular


Fully modular

Ten years warranty

8x PCI & 3x EPS connectors

High build quality


OCP triggering points should be set lower on the minor rails

Inaccurate number of modular ports

Last but not least is the all-powerful Corsair AX1000. This is one of the most popular power supplies by the Corsair. It offers premium high quality, performance, and efficiency at a moderately high price tag. It has the highest wattage power in our guide, and it is considered among the best 1kW PSUs that the market can offer. The AX series offers great power at a great price for gaming enthusiasts who cannot forgo the overclocking potential of their hardware due to low power making it the best gaming Quiet Power Supply. Considering what it offers, the price tag is quite agreeable. It provides great performance and pushes it further with overclocking capabilities and its true compatibility with power-demanding hardware, making it future-proof and spacious for bigger upgrades. The Corsair AX1000 also follows an analog design and is highly capable compared to the digital ones.

The Corsair AX1000 follows a conventional shape design, with extra features popping here and there. The fully modular cable set is quite lengthy and perfect for any building space. The number of SATA connectors is amazingly noble, and it is nice to get so many four-pin Molex connectors. There’s even a bundled Berg adapter for enthusiasts who still require an FDD connector. With its high-quality components built by companies like Vishay, Infineon, and Nexperia, the Corsair AX1000 offers a world-class electrical performance as claimed by the manufacturers. The high-end Japanese electrolytic capacitors and a few polymer capacitors from FPCAP and Chemi-Con exhibit consistent power and long-term reliability. The cooling is ensured by the supreme fluid dynamic bearing-based 135mm cooling fan by Hong Hua HA13525M12F-Z, which provides exceptional airflow at 1800 RPM, along with low-noise operation and long life.

The noise is further reduced to none by the zero RPM fan mode, which restricts the fan from spinning in low and medium loads, with a single power rail +12V. There is nothing more to say about the power division. Elaborating the design, the rear side of the PSU is covered in an exhaust grille, along with space for the conventional AC receptacle and an on/off switch, along with an addition of a zero fan RPM switch. The side decals that display the brand logo and model number are magnetic and can be replaced with a different color scheme, including red, white, and blue. The front is side is quite busy with lines of sockets for the connectors. The top has embossed parallel lines to each side with a corsair logo in the middle. The Corsair AX1000 is the Quietest Power Supply, however, the expensive, it is heavily featured, and the cherry topping is the 10-year warranty that comes with it.


The guide offers the best quiet power supply in 2022. One of our personal favorites in terms of performance is the Corsair AX1000. Still, it is definitely expensive for the general audience, so any given Corsair power supplies are a great pick, with exceptional performance and excellent prices. However, if your ultimate preference is quietness, then the fanless Seasonic SSR-600TL is a miracle, my friend. With virtually no noise at all, it provides unbeatable performance and stability. The price tag is also quite affordable, and the long-term reliability due to quality components and less-active parts is the cherry topping. Whichever you choose among these, always remember that PSU is the heart of a computer, so pick accordingly.

Frequently Asked Questions

Is be quiet PSU good?

Be quiet! Power supplies are stable and efficient. It has released elite PSUs like Pure Power 11 FM series and Dark Pro 12 that are used by gamers and enthusiasts alike. 

How do I make my power supply quieter?

You can make your power supply quieter by replacing word-out fans with new efficient ones, ensuring that the PSU is positioned correctly, cleaning out fans, and managing the speed of fans to reduce noise when the PC is carrying out less data-intensive tasks. 

Are Corsair PSU quiet?

Corsair is renowned for releasing premium high-performance PSUs that are also whisper quiet. Corsair RM750x and Corsair HX750 are top-tier, highly efficient, and quiet PSUs that can power any gaming build.

Are higher watt PSU Quieter?

The higher Watt PSUs are often quieter but the wattage capacity is not a good indicator of whether the PSU is noisy or not. It depends on build, fan quality, and various other factors. 

Zakriya Amir
Zakriya is right from Pakistan. He was raised with a quest for the gaming craze with an organization of specialized folks. This is the place he understood that computer games can grow your creative mind to unlimited universes. Gaming is no longer for him only a method for amusement, yet enthusiasm. From the youthful age of 8, gaming was simply the main method for communicating.