With all the new CPUs that were released this year, the heat dissipation has become a major issue in building a silent PC. Especially the new 12nm Skylake line of CPUs, which are known to be very power hungry. Here are the best Fanless CPU Coolers tested to Build a Silent PC [2021]:

As PC gaming continues to grow, so do the need for silent fans. In the past, computer fans have been loud, but builders are now realizing the importance of quiet cooling for gaming. Some builders are choosing liquid cooling, which is more expensive and requires more maintenance. In our opinion, the best way to cool a PC is through air cooling, but that’s not always possible. In this series, we are going to show you different cases and fans that we have tested to see if they are able to be reasonably quiet when used as a PC case fan.

What makes a good CPU cooler? How much cooling should a CPU cooler provide? What is a silent PC? How do you test a CPU cooler? The purpose of this article is to answer these questions.

You are not alone if you are disturbed by the CPU cooler sounds.

As someone who spends most of his time on a computer, I found the continuous buzzing of the CPU cooler to be very irritating.

Are you in a hurry? Check out the fanless cooler that our expert recommends.

So one day, I went online to look for the finest fanless CPU coolers. And in the end, I bought and installed one.

Believe me when I say it’s a world of difference! Using my computer now seems more refreshing and peaceful than ever before.

It also collects less dust, and since there are no moving components, I wouldn’t have to worry about fixing or replacing anything.

Continue reading to learn about the finest fanless CPU coolers I’ve come across throughout the years.

Also, for your chassis, see our expert-recommended best low-profile cpu cooler.

Our Recommendation for the 7 Best Fanless CPU Coolers

If your CPU has a low TDP, you can only utilize a fanless CPU cooler. Because the whole heat transfer process is passive, cooling high TDP or overclocked CPUs passively is difficult because they need fast heat dissipation.

So, if you have a low TDP CPU and want to get rid of the continuous noise coming from your PC, purchasing fanless components may save you not only money but also time in the long run.

The top 7 best fanless CPU coolers are as follows:

1. Heligon Silverstone SST

The Silverstone SST-HE01-V2 – Heligon passive CPU cooler is the most effective passive CPU cooler available.

The Silverstone SST-HE01-V2 – Heligon has the following features:

  • Included is a 140mm PWM low-noise level fan.
  • Intel and AMD CPUs are supported.
  • aluminum fins with a large diameter
  • up to three 140mm fans may be supported
  • CPU with a TDP of up to 300W
  • six heat-pipes that have been soldered

silverstone-heligonCheck out the current price of Silverstone SST Heligon.

Both in terms of performance and sound, this passive cooler shines. Let me explain how it does this.

The six soldered heat pipes link the copper base with the heatsink’s aluminum fins. These heat pipes are of exceptional quality, providing maximum heat conductivity.

The aluminum fins have been designed to be broad enough to reduce the sound of air passing past them. It also aids in the rapid dissipation of heat.

This passive cooler is unique in that it can be used as a conventional CPU cooler by adding fans. It allows up to three 140mm fans to be added to turn this passive CPU cooler into a normal one. It functions well in this manner.

This month, check out the award-winning best nzxt aio cooler.

The best thing is this:

The highest TDP that can be supported is outrageously large, reaching 300W. However, with such a high-heat-producing CPU, a passive cooler would not suffice.

A 140mm PWM fan is included in the cooler, enabling you to adjust the fan speed based on your CPU temperature or personal preferences. It’s up to you whether you want to run it slowly for less noise or quickly for a performance increase.

In PWM mode, the Silverstone SST-HE01-V2 – Heligon effectively transfers heat away from the CPU. The high efficiency of this passive CPU cooler is the primary reason for its outstanding performance across the system.

Its height is also not excessive, and at 164mm, it would fit inside most modern PC cases. The building is of exceptional quality. Although the mounting method is not difficult, there is still space for improvement.

Overall, the Silverstone SST-HE01-V2 – Heligon is an excellent option for passive CPU cooling.


  • »Works well in PWM mode
  • »Deafeningly quiet
  • »extremely effective


  • »It’s possible that the mounting mechanism may be improved.

Nofan CR-80EH, Nofan CR-80EH, Nofan CR-80E

Anyone searching for a low-noise PC might choose the Nofan CR-80EH.

The Nofan CR-80EH has the following features:

  • a number of heat pipes
  • totally devoid of fans
  • CPU with a maximum TDP of 80 watts
  • 155x113x155mm in size
  • Weight: 300 g

nofan-cr-80ehCheck the current price of the Nofan CR-80EH.

It’s a fanless CPU cooler, as the name implies. It does not come with a fan and does not facilitate the addition of one. To function, the fanless cooler is completely reliant on external airflow.

Now comes the crucial question: how does it perform?

It works well for a fanless CPU cooler. The fanless cooler can handle CPUs with a TDP of up to 80W. For the best results, you may not want to go that far and stick to CPUs with a TDP of 65 Watts.

Don’t forget to look at the finest noctua cpu cooler on the market as well.

In terms of cooling,

The aluminum and copper heat pipes of the Nofan CR-80EH circle the cold copper plate in circles. Heat is transferred to the air via these heat pipes. Here, the whole procedure is passive.

The Nofan CR-80EH does a good job of cooling down a standard CPU. Thermal throttling will not occur unless you use a CPU with a high TDP or one that has been overclocked.

The cooler’s size is also right on the money. It’s large enough to effectively transmit heat yet tiny enough to fit in most situations.

Only purchase the Nofan CR-80EH if you want a completely silent system with a fanless PSU, GPU, and enclosure. If you add certain components to your PC that have fans, though, you will hear some noise. At that moment, a silent CPU cooler is preferable than a fanless one.


  • »noise-free
  • »Excellent cooling for a cooler without a fan
  • »cheap


  • »not for CPUs with a high TDP or for overclocking

3. Fanless CPU Cooler from Mustwell

The Mustwell Fanless CPU Cooler is a massive passive CPU cooler radiator that can also be used in conjunction with a fan for maximum performance.

The Mustwell Fanless CPU Cooler has the following features:

  • Support for a 120mm fan
  • six heat pipes made of copper
  • radiator with no fans for cooling
  • Intel LGA 1150/1151/1155/1156/1366/775/2011 sockets are supported.

fanless-cpu-coolerCheck Mustwel’s current price.

This product may be used in two ways. It may be used as a passive CPU cooling without the need of a fan. The six heat pipes made of copper generously transmit heat to the aluminum fins, which are then dissipated into the air.

This mode is suitable for a setup with no sound. Another advantage is that there will be no dust buildup.

The Mustwell Fanless CPU Cooler may also be used as a radiator. It can accommodate a single 120mm fan. This arrangement will act as a radiator heatsink for the fan, with the fan being in charge of quickly removing the heat. The fan, however, must be purchased separately.

Check out the TR4 socket compatible CPU cooler.

It performs well in both situations. After all, it is a passive CPU cooler. Keeping that in mind, it effectively cools low-power CPUs.

It’s a shame that this single heat sink doesn’t come with any mounting brackets. Aside from that, the Mustwell Fanless CPU Cooler performs well for the price.


  • »consistent cooling
  • »Use case with several purposes
  • »cheap


  • »There are no mounting brackets supplied with this product.


For media or business PCs using AMD AM4 socket motherboards, the ARCTIC Alpine AM4 Passive is a great option.

The ARCTIC Alpine AM4 Passive has the following noteworthy features:

  • AMD socket AM4 fanless CPU cooling
  • Dimensions: 99 x 70 mm
  • thermal paste that has already been applied
  • Heat pipes with black anodizing

arctic-alpineCheck ARCTIC Alpine’s current price.

The fanless CPU cooler is anodized black, which aids in the smooth transmission of heat from the aluminum heat pipes to the surrounding air. It improves efficiency and moves heat away from your CPU quickly.

The passive cooler is square in form and completely black. It is 99mm in length and width and 70mm in height. Its physical size and weight of 557g enable it to fit flush on most AMD motherboards. The majority of PC cases will have enough headroom for their height.

The passive CPU cooler, according to the manufacturer, can cool all AM4 CPUs with a TDP of up to 47 Watts. However, at such high power levels, certain CPUs may choke under severe loads. To guarantee optimum performance and stable frequency, utilize the ARCTIC Alpine AM4 Passive with up to 35W TDP CPUs and sufficient surrounding airflow.

Also, have a look at the quietest CPU cooler we’ve tested for your PC.


The additional advantages of a fanless cooler apply here as well. Because there are no moving components, you get a zero-noise CPU cooler, a dust-free environment, and a long service life. There’s no need to be concerned since the structure is rigid.

Because it’s designed specifically for AMD AM4 brackets, there’s no need to change any brackets during installation. The cooler comes with pre-applied thermal paste, which is the icing on the cake.

Overall, the ARCTIC Alpine AM4 Passive is a good fanless CPU cooler for any AM4 processor with a TDP of 35W or less. It’s thus an excellent cooler for most business and media PCs that utilize such CPUs.


  • »ideal for use in offices and on media PCs
  • »There is no noise
  • »dust-free
  • »simple to install


  • »On a high load, the CPU may throttle at the stated 47W.

5. Supermicro SNK-P0046P 1U Supermicro SNK-P0046P 1U Supermicro SNK-P0046

The Supermicro SNK-P0046P 1U passive cooler is the best choice if you need a passive cooler for a Supermicro server chassis.

The Supermicro SNK-P0046P 1U has the following notable features:

  • Dimensions: 90x90mm
  • Intel LGA1155, 1150 sockets are supported.
  • intended for Supermicro X8, X9 1U, and above systems
  • to be utilized with Intel Xeon E3-1200 or Core i3 series processors

supermicro-snkCheck the current price of the Supermicro SNK-P0046P 1U.

The passive cooler is designed specifically for Supermicro server chassis. The 90x90mm footprint, on the other hand, makes it compatible with most standard PC cases and HTPCs with Intel motherboards.

To be more specific, it’s designed for Supermicro X8, X9 1U, and above server chassis. It works with Intel’s LGA 1155 and 1150 CPU sockets. In most instances, socket LGA 1151 also seems to function.

The cooler should not be used with high-TDP CPUs since it is a passive fanless cooler. It’s safe to use with Intel Core i3 or Intel Xeon E3-1200 processors, for example.

The Supermicro SNK-P0046P 1U outperforms the standard Intel cooler for the CPU families listed. You get more cooling, greater performance, and no noise from the CPU cooler, so it’s a win-win scenario.

Don’t forget to compare the finest dark rock pro 4 cpu cooler options.

What’s the greatest part?

Because there are no mechanical components, there is no maintenance or dust. It will also last longer since there will be no wear and tear.

Because of its passive cooling effectiveness, the fanless cooler is able to maintain a consistent performance. It’s also a lot less expensive than most good CPU air coolers, so you get a lot of bang for your money.

Get the Supermicro SNK-P0046P 1U if you have a 1U server chassis with an Intel Xeon CPU or a HTPC with an Intel i3 CPU. It will save you money while improving performance and requiring minimal maintenance.


  • »no-noise CPU cooler
  • »Long-term, maintenance-free service
  • »Excellent cooling capacity
  • »continuous CPU performance


  • »Not compatible with AMD processors

6. Haudang CPU Cooler with No Fans

Another multifunctional passive CPU cooler is the Haudang Fanless CPU Cooler.

The Haudang Fanless CPU Cooler has the following features:

  • six copper heat pipes
  • may function as a radiator
  • installing a 120mm fan is supported
  • Intel sockets LGA 1150/1151/1155/1156/1366/775/2011 are supported.

haudang-fanlessCheck out the current price of Haudang.

The Haudang Fanless CPU Cooler, like its sibling, the Mustwell Fanless CPU Cooler, features a dual-use casing. It may be used as a radiator with a mounted fan or as a passive CPU cooler without a fan.

The six copper heat pipes effectively transport heat to the aluminum fins at the top, where it is passively dispersed by the surrounding airflow.

The Haudang Fanless CPU Cooler can install a single 120mm fan if you choose to use it with one. As a result, the heat sink will be more efficient since it will transmit more heat in less time. It may be useful if you’re running a CPU with a little higher TDP.

Also, have a look at our list of the top cooler master cpu coolers, as suggested by our experts.

Whatever the use case, it’s not appropriate for CPUs with greater TDP since it’s a passive cooler. That’s something to keep in mind when you shop for it.

Because it comes with a mounting bracket, it outperforms its sibling, the Mustwell CPU cooler. It’s a lot easier than looking for a suitable mounting bracket individually.

Aside from that, the Haudang Fanless CPU Cooler is well-built, featuring robust copper and aluminum components. The pricing is also reasonable and reasonable for a product of this quality.


  • »reasonable cooling
  • »suitable for CPUs with lower TDP
  • »includes mounting bracket


  • »Only works on CPUs with low TDP

7. R8 Dynatron

The Dynatron R8 is one of the most effective passive CPU coolers for servers with 2U or more.

Highlights of the Dynatron R8 include:

  • LGA 2011 socket supports Intel Sandy Bridge EP/EX CPUs.
  • size ideal for 2U or higher servers
  • cooling fan in a square
  • Distance between mounting holes: 80x80mm
  • TDP of up to 160 Watts was supported

dynatron-r8Check out the current price of the Dynatron R8.

Any Intel Sandy Bridge server CPU will benefit from the passive cooling. Processors from the EP or EX series with low TDP are acceptable.

Don’t forget to look at our list of the finest CPU coolers for the LGA 1200 socket.

This cooler’s footprint enables it to suit any 2U or higher server. It may perform an excellent job of cooling the CPU with a strong airflow from the chassis fan.

The CPUs that are supported by this passive cooler don’t generate a lot of heat. To create a quiet server chassis, it’s best to use a passive cooler instead of a conventional CPU cooler for such CPUs.

With a copper base, heat pipes, and aluminum fins on the heatsink, the fanless cooler feels very substantial.

Now, let’s look at the rising situation.

It is appropriate for a square LGA 2011 socket motherboard since the mounting hole distance is 80x80mm. However, mounting brackets are not included in the box and must be purchased separately.

Overall, I would highly recommend the Dynatron R8 in a 2U or higher chassis for LGA 2011 socket server CPUs. It’s a no-brainer since the performance is steady and there’s no CPU noise. The icing on the cake is that it is also reasonably priced.

Here are some amazing budget best cpu cooler for overclocking if you want to overclock your CPU.


  • »consistent cooling
  • »cheap
  • »It performs as expected


  • »There are no mounting brackets supplied with this product.

Last Thoughts

Which of the fanless CPU coolers piqued your interest? I’d choose the Silverstone SST-HE01-V2 – Heligon above the others because of its exceptional dependability. The Nofan CR-80EH is also a fantastic choice if I want a zero-noise setup.

The Intel i9-9900K CPU is the most popular CPU to date. It’s part of the Coffee Lake-S series of processors, which are themselves the fastest processors in Intel’s entire product history. And if you look closely, you might notice that this is actually the third generation of Intel’s 9th generation processors. That’s right, the 9th generation started with the 8th generation chips, and then Intel launched the 10th and 11th generation processors, then launched the i9-9900K. At this point, we’re up to the third iteration of the 9th gen, and we’re only halfway through the 10th and 11th generations.. Read more about best cpu cooler for overclocking and let us know what you think.

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Frequently Asked Questions

Who makes the quietest CPU cooler?

The Corsair H100i v2 is the quietest CPU cooler on the market.

What is the quietest liquid CPU cooler?

The quietest liquid CPU cooler is the Corsair Hydro H60.

What is the best CPU cooler 2021?

The best CPU cooler for 2021 is the Noctua NH-D15S.


Holly is the smartest person you will ever know (Or so she tells us lol). She's a gamer by heart, and an author by soul. Writing for the website g15tools is a dream come true for her - she loves being able to share her thoughts and insights with others who love gaming as much as she does. When she's not writing or gaming, Holly can be found spending time with her friends and family.