GuidesWikiCPU Cooler Buying Guide: Things To Know

CPU Cooler Buying Guide: Things To Know

No matter if you're gaming, working or overclocking, you must know how to choose the right CPU cooler. There are several ways to do so.

Whether you need to do light office work, play games, or just watch some Netflix, you are always going to need a CPU cooler on your PC. Yes, you can go with the stock CPU cooler that your processor comes with, but if you want a tad bit more performance, then you’re going to have to choose the right CPU cooler yourself.

With the correct CPU cooler, you can properly cool your PC, ensure low temperatures, and have headroom to overclock your computer. However, finding and choosing the perfect CPU cooler can be quite a task. Therefore, the following article will give users tips on selecting the best CPU cooler for their build.

Also Read: How to Choose a CPU

Key Takeaways

  • There are various factors to consider when learning how to choose the right CPU cooler, such as socket compatibility, budget, use case scenario, and case size.
  • Specifications like TDP, fan speeds, heat pipes, radiator sizes, and noise levels should be considered.
  • Extra factors such as maintenance, RGB compatibility, and overclocking potential should also be considered.

Factors To Consider Before Buying A CPU Cooler

Let’s go over the most important factors that you must always consider before buying a CPU Cooler.

Socket Compatibility

Intel and AMD processors
Intel and AMD CPU sockets. Image Credits: OnLogic.

The first concept to understand when buying CPU coolers is to know the socket compatibility of the CPU cooler. Because AMD and Intel CPUs utilize different sockets, many CPU coolers are dedicated to only one processor. On the other hand, many coolers are compatible with both manufacturers with the help of special mounting brackets. Moreover, only a handful of air coolers are designed to support a particular socket.

Meanwhile, almost all custom water cooling loops and All-in-One (AIO) water coolers support all socket types. However, you must consider the motherboard’s layout and the case’s size for such coolers.

For AIO coolers, you’ll need to know the radiator size you can fit in your chassis before you buy the product. For custom water cooling, you must know whether your chassis is big enough to fit water pumps, radiators, and tubes.

Before you buy a CPU cooler, ensure it is compatible with your CPU’s socket, or else the purchase will be useless. You can find the socket compatibility on the product’s website, and in some cases, on the product box. While many CPU coolers have mounting brackets, they aren’t guaranteed to come with one or even support your motherboard’s layout.

So, it would be best to consider things before buying a motherboard while also understanding CPU coolers to ensure you don’t make a mistake with your PC build.

Budget Allocation

CPU cooler budget allocation
Deciding on a budget for CPU coolers.

Deciding on a budget for your CPU cooler is another important task because your budget ultimately decides the type of CPU cooler you’ll go with. For example, you’re more likely to buy an affordable air cooler at a lower budget, between $20 to $50, than go with anything fancy. If you go up to $75, you can get a reasonably high-end air cooler, reducing temperatures further.

On the other hand, with a greater budget, ranging between $90 to $150, you can get your hands on an AIO cooler. However, with AIO coolers, heat dissipation depends on the size of the radiator and where you place it within the chassis.

You will need an even bigger budget to utilize a custom water-cooling loop. Starter water-cooling kits cost anywhere between $350 to $400. Whereas enthusiasts-grade, high-end kits usually go well above $1,000. 

Additionally, depending on your budget for the CPU cooler, you should spend extra money on buying case fans. Better airflow leads to greater performance and lower temperatures. Ideally, you want positive air pressure in your case, no matter the cooling you opt for. But if you’re going with the traditional air cooler, the case fans are mandatory to maintain temperatures.

Also Read: 120mm Vs 140mm case fans

Use Case Scenario

use case scenario of CPU cooler
Utilizing an AIO cooler based on a certain use case scenario. Image Credits (Tech4Gamers)

When learning to choose the right CPU cooler for your gaming PC, knowing your use case scenario should be one of the top priorities. In particular, we use computers for office work, playing games, or overclocking components and testing their durability. Lower temperatures help keep CPU clock speeds and performance in check, making CPU coolers extremely valuable.

If your main purpose for building a new PC is light office work, an affordable air cooler such as the DeepCool Gammaxx is a great choice. On the other hand, if you’re going into video editing and slight 2D rendering, a high-end air cooler such as the Be Quiet Dark Rock Pro 4 should keep your PC cool.

If you’re building a new PC to play triple-A title games, an expensive air cooler or an AIO should be the ideal choice. If your chassis has enough space, we recommend buying an AIO with a 240mm or 360mm radiator. You will not only be able to keep your processor cool, but you will also be able to overclock your CPU moderately.

Lastly, if overclocking your PC is your motive, a water cooling kit is the best option. With a water-cooled PC, you can do almost all tasks without worrying about rising temperatures. From playing games to decent overclocking and even extreme video editing and 3D rendering, water cooling helps with it all. The Raijintek Scylla Elite CA360 water cooling kit is great for newcomers if you’re interested.

AIO Vs Air Coolers

AIO coolers vs air coolers comparison
Comparing air coolers and AIO coolers. Image Credits (Tech4Gamers)

Throughout the article, we discussed various factors to consider when learning to choose the right CPU cooler. However, we have yet to compare All-in-One and air coolers against each other. Which is better based on price to performance?

If we only compare performance, AIOs provide more on the table than air coolers practically can. This is because AIOs use water to cool the CPU, and the radiator provides additional cooling for the chassis. On the other hand, air coolers soak heat from the processor and blow it outwards inside the chassis, which is later directed outside through case fans.

Although modern air coolers come with more heat pipes which significantly cools the air, improving the heat dissipation process. As it currently stands, you can find a good air cooler for ~$75, whereas good AIO costs ~$150, almost double the cost.

Another factor to look into when comparing both CPU coolers is the installation process. While AIO coolers provide a better performance, they are more difficult to install than air coolers, requiring users to mount the cooler to the CPU. When talking about installation processes, custom water cooling takes the cake as being the most difficult to handle.

If you want to learn more about the differences and similarities between AIO coolers and standard air coolers, kindly read our comparison article on AIO Vs air coolers.

PC Case Clearance

PC case clearance for CPU cooler
DeepCool CK560 PC case clearance. Image Credits (Tech4Gamers)

One of the most unlooked factors by consumers when they are learning how to choose the right CPU cooler is the size of the case and motherboard. Knowing the dimensions of your chassis is as important as knowing the TDP requirements of your processor and choosing an adequate cooler.

To explain, if you choose a bulky air cooler in a mini-ITX or microATX chassis, the purchase will be useless because the cooler probably won’t fit. Moreover, knowing whether your RAM has enough clearance space is another important aspect many consumers overlook. For example, if you use a microATX motherboard and place a double-chamber air cooler, you probably won’t have enough space to install the RAM.

We face a similar problem with AIO coolers due to the size of the radiator. Most of the time, we place the AIO radiator at the top or front of the case. If you buy a 360mm AIO cooler and your case can only support a 240mm radiator, the cooler will be useless.

Similarly, you might be able to fit the radiator in the case, but you may not have enough space to install the fans on the radiator. Therefore, before selecting a CPU cooler, ensure you can properly install all the components without any issues.

So, along with knowing what to consider when buying a CPU cooler, you must also know what to consider when buying a PC case. If the chassis isn’t big enough, you won’t be able to fit the components you buy.

Also Read: Best Low Profile CPU Coolers

Specifications To Consider

Compatibility, use case scenario, budget, and clearance aren’t the only issues when you’re in the market to choose the right CPU cooler. Consumers must also know what specifications to consider before going for a purchase.

For example, knowing the TDP requirements of the processor (and the TDP offered by the cooler), RPM speeds of the case fans and cooler, heat pipes, radiator size of AIOs, and the noise level produced by the cooler are some of the specifications you must consider.

Thermal Design Power

AIO cooler TDP
Showcasing the thermal performance of the Lian Li Galahad 360mm AIO cooler. Image Credits (Tech4Gamers)

The first specification you must look for is the Thermal Design Power (TDP) of the processor and CPU cooler. For reference, TDP is not the amount of wattage consumed by the processor or cooler but the amount of heat generated and dissipated by both components.

Depending on the amount of heat the processor generates, you must buy a CPU cooler that can dissipate at least that much heat. For example, if you buy the AMD Ryzen 5 3600X, it has a TDP of 65W under stock settings. To cool the processor, you must buy a CPU cooler that can at least dissipate 65W of heat.

Better practices are to buy a CPU cooler that can dissipate at least 5 to 10% more heat if you need to overclock your components at some time.

Also Read: What is TDP

Fan Speeds

Gamdias Aelous M2-1204R thermal performance
PC temperatures vary on the fan speeds. Image Credits (Tech4Gamers)

A concept closely related to the airflow within a case, the CPU cooler and the case fans’ fan speeds help regulate hot air out of the chassis. When handling airflow within a case, we must know how to place the fans.

Ideally, you want positive air pressure, which is possible through properly placing fans and calculating the fan Rotations Per Minute (RPM). To explain, you can place case fans in two ways, intake to get cool air within the chassis and exhaust to push hot air out of the chassis. You want intake fans at the front and bottom of the case and exhaust fans at the top and back.

To have positive air pressure within the chassis, you want more air in the case than being pushed out. This can be achieved in two ways: either have more intake fans or have faster intake fans. For example, if you have three intake fans running at 1,500 RPM, it totals 4,500 RPM. You can have three exhaust fans running at 1,200 RPM to maintain positive air pressure or two at 1,500 RPM.

Of course, you will also need to consider the fan speed of your air cooler, which is mostly used for intake. However, you can utilize the CPU cooler fan for the exhaust to ensure positive air pressure. So, through basic math and some experimentation, you should be able to achieve good results.

Also Read: How to fix case fan not spinning

Heat Pipes

DeepCool AK620 heat pipes
The DeepCool AK620 houses six heat pipes. Image Credits (Tech4Gamers)

Heat pipes are an important factor to consider when learning how to choose the right CPU cooler. A feature exclusive to air coolers, heat pipes are the primary cause of the hot air from processors moving upwards to the cooler.

The heat pipes in an air cooler move heat to the fins that make up the heatsink, which cools the air. The more heat pipes in the air cooler, the better the cooling performance is. But that also means the air cooler will be bigger.

So, depending on your use case scenario and the chassis size, you might want to buy a low-profile CPU cooler. Generally, a CPU cooler has 3 to 4 heat pipes, but high-end coolers can have 6 to 8.

All-in-all, when buying an air cooler, you must look at the number of heat pipes it has and ensure it can fit in your chassis. If it does, the problem is solved. However, moving towards an AIO as an alternative is better if it doesn’t.

Radiator Size

AIO cooler radiator sizes
Several AIO cooler radiator sizes are showcased in one image. Image Credits (Tech4Gamers)

Exclusive to AIO coolers, it is important to consider the size of the radiator before purchasing. If you buy an AIO cooler with a bigger radiator than the case can fit, the entire cooler will be useless. You will either need to change the chassis or be creative on how to fit the radiator.

As a rule of thumb, most mini-ITX cases either don’t fit AIO coolers or have space for 240mm. MicroATX cases can fit 240mm and 280mm AIO coolers. ATX cases usually accommodate anything from 120mm to 360mm, although you’ll need to know where you want to place the radiator. Lastly, E-ATX cases can fit up to 420mm AIO coolers.

With E-ATX cases, in many instances, you can fit more than one radiator, improving your thermal performance. You can place the AIO cooler’s radiator in one of three places: at the front, top, or back of the chassis. However, we mostly place 120mm radiators at the back, while we place 240mm, 280mm, and 360mm radiators at the top and front.

Noise Levels

If performance isn’t the only thing you’re looking for, and you want your PC to be quiet, it’s important to go through the noise levels of the coolers you choose. AIO coolers and custom water cooling kits don’t produce substantial noise. The case fans are the real cause of any unrest within the chassis.

Therefore, air coolers and radiators attached to an AIO cooler are prone to increase noise levels within a case. However, you can manage a fan’s noise levels by reducing fan speed, utilizing smaller fans, and using mesh to dampen sounds.

The more you increase the fan speed, the greater the noise levels will be. So, you must factor in the speeds you’ll keep your fans.

Also Read: How to fix AIO CPU fan not working

Extra Factors To Consider

When handling CPU coolers, we must consider a few extra factors before choosing one. For example, maintenance time, overclocking support, and RGB capabilities are a few of these factors. While none of these should be deal makers or deal breakers, they’re useful to know.


When choosing a CPU cooler, knowing the product’s life without needing maintenance is important. No consumer wants to crack open their computer every other day to clean dust or filter liquid coolant.

Generally, an air cooler has a longer life without needing maintenance. You don’t need to do much more except for the occasional dust cleaning. On the other hand, an AIO cooler has a life of around three to six years. Lastly, custom water cooling kits have the lowest life needing frequent maintenance almost every year.

Also, with custom water cooling kits, if any part of the loop starts to malfunction, you can cause a massive hazard within your PC. Therefore, depending on whether you can maintain your PC periodically, you should choose the right CPU cooler.

Also Read: Best CPU cooler for AMD Ryzen 9 7950X3D

RGB Capabilities

Although a mere gimmick, many consumers choose CPU coolers based on their RGB capabilities. RGB neither helps improve performance nor poses any other substantial benefits except for improving aesthetics.

Usually, the RGB of air coolers and AIO coolers can be modified through the motherboard manufacturer’s software, but there are always exceptions. If your air cooler doesn’t support RGB, you can also utilize an ARGB CPU fan, connect it to the air cooler and play around with its RGB settings.

Also Read: RGB in gaming: everything to know

Overclocking Potential

If you’re buying a CPU cooler to overclock your PC, you’ll want to buy one whose TDP surpasses the processor’s TDP by a wide margin. For example, it should be good enough to overclock an AMD Ryzen 5 3600 processor with a 65W TDP using a Noctua NH-D15 air cooler.

On the other hand, overclocking an AMD Ryzen 7 7700X processor with a 105W TDP using a Noctua NH-D15 air cooler isn’t recommended. Rather, using an AIO cooler should be the way to go.

Therefore, depending on the TDP of the processor and the capabilities of the CPU cooler, you must decide which route to take. Although consumers mostly utilize custom water cooling kits for overclocking, you can achieve similar results using an AIO cooler and proper airflow.

Also Read:

CPU Cooler Recommendations

While we have mentioned a few CPU coolers that are excellent choices, let’s go over some of Tech4Gamers’ CPU Cooler recommendations.

ARCTIC Liquid Freezer II 360 A-RGB

High-end 360mm AIO

Arctic Liquid Freezer II 360mm AIO
Showing the Arctic Liquid Freezer II 360mm AIO.

One of the most affordable yet fastest AIO coolers, going with the Arctic Liquid Freezer II will allow you to place your radiator in any layout. The AIO also supports up to 3,000 RPM fan speeds so that you can get a lot of airflow with only the radiator.

Enermax Aquafusion ADV 360 A-RGB AIO

Mainstream 360mm AIO

Enermax Aquafusion ADV 360mm AIO
The Enermax Aquafusion ADV 360mm AIO is connected to a motherboard. Image Credits (Tech4Gamers)

If you don’t want to break your pocket while getting decent performance from a 360mm AIO, the Enermax Aquafusion ADV 360mm AIO should do the trick. Consumers get a heat dissipation capacity of 380W with a 5-year warranty. The only downside is the noisy fans.

For more information, read our ENERMAX AQUAFUSION ADV 360mm review.

Corsair iCUE H100i Elite CAPELLIX XT

High-end 240mm AIO

Corsair iCUE H100i Elite Capellix
Corsair iCUE H100i Elite Capellix 240mm AIO.

If you’re looking for high-end 240mm AIO coolers, the Corsair iCUE H100i Elite Capellix’s sturdy build should appeal to you. Along with the cooler, you receive two Corsair ML120 Pro RGB PWM fans with a maximum speed of 2,400 RPM. Thus, you should have amazing airflow even with only two fans as an intake.

We highly recommend you read our review of the Corsair iCUE H100i.

ARCTIC Liquid Freezer II 240 A-RGB

Mainstream 240mm AIO

Arctic Liquid Freezer II 240mm
Arctic Liquid Freezer II 240mm AIO cooler. Image Credits (Tech4Gamers)

If you don’t have the budget or enough space in your case for the Arctic Liquid Freezer II 360mm AIO, you can go with its little brother. The 240mm variant is a great substitute, offering similar cooling capabilities with a smaller, more compact design. However, compatibility with AMD’s AM5 socket might be an issue due to the smaller cold plate.

You can also read our review of the Arctic Liquid Freezer II 240mm AIO for more of our thoughts. 

Noctua NH-D15 chromax.Black

High-end CPU Air Cooler

Noctua NH-D15 Chromax.Black
Noctua NH-D15 Chromax.Black air cooler.

Air cooling is one of the easiest ways to cool your PC, and if you plan to utilize a conventional CPU cooler, the Noctua NH-D15 Chromax.Black is one of the best in the market. With a max rotational speed of 1,500 RPM, you can easily improve the positive airflow within your case.

You should also read our review of the Noctua NH-D15 for a more in-depth analysis.

DeepCool AK620

Mainstream CPU Air Cooler

DeepCool AK620 air cooler
DeepCool AK620 air cooler. Image Credits (Tech4Gamers)

If you’re on a tight budget but require a CPU cooler that can handle the temperatures of your high-end processor, you’ll love the DeepCool AK620 air cooler. Along with its top-notch build quality, the DeepCool AK620 houses a high-density fin stack that cools more hot air, improving efficiency.

We have also reviewed the DeepCool AK620 in great detail, be sure to check that out!


To conclude, knowing the various factors in choosing the correct CPU cooler for your PC is important. From socket compatibility, budget, use case scenario, space in the chassis, specifications, maintenance requirements, RGB compatibility, and overclocking support, depending on why you’re using a CPU cooler, you must consider a few things.

Furthermore, it’s important to know how airflow affects temperatures and the role of TDP in choosing coolers. Selecting case fans based on their RPM will allow for proper airflow management and reduce noise levels. You must also consider radiator sizes if purchasing an AIO cooler and where you want to place the radiator.

All-in-all, buying CPU coolers can be a hassle if you don’t know what to look for, so the first step is to decide your use case scenario. Build on your requirements until you can pinpoint the cooler you desire.

Frequently Asked Questions

How do I know what CPU cooler I need?

The main purpose of a CPU cooler is to dissipate heat. Depending on the TDP of the processor, you’ll need a CPU cooler that can dissipate slightly more heat, thus a cooler with a greater TDP than the processor.

Can I fit any processor with any CPU cooler?

CPU cooler compatibility depends on the processor’s socket. While mounting brackets exist, you can’t pair every CPU cooler with another processor.

Do AIO cooler radiator sizes matter?

The bigger the radiator size of an AIO cooler, the more heat it can dissipate at once. However, bigger radiators require bigger cases to fit properly.

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Wajih Hyder Chohan
Wajih Hyder Chohan
I am Wajih Hyder Chohan - a PC Hardware Nerd who always analyzes the latest products and reviews them. Usually, people call me boring, but I can't limit my love for Hardware!


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