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5 Tested Best CPU Air Coolers To Buy In 2021

5 Tested Best CPU Air Coolers To Buy In 2021

Choosing the best CPU air cooler for your PC is challenging as there are hundreds of CPU cooler models out there in the market. There are two types of CPU coolers; CPU air cooler and CPU liquid cooler. Liquid coolers are comparatively expensive but work better than air coolers. 

Buying a good CPU air cooler is essential because it will cause a significant decrease in CPU temperatures, let you overclock, and increase CPU lifespan. Keep this in mind: a good CPU air cooler can do nothing without a good thermal paste. 

Stick around till the end to get a look on the five best CPU air coolers and the thermal paste you should use with them. 

The Best CPU Air Coolers 

Before we start, you should remember that CPU air coolers are comparatively less efficient, take more internal space but are cheaper than liquid CPU coolers. However, new and advanced models sometimes oppose this claim about CPU air coolers. 

Deepcool Assassin III

Deepcool Assassin III is a CPU air cooler known for its excellent heat dissipation quality and no noise. It is the best budget, big-air CPU cooler. 

Deepcool Assassin III has seven heat pipes, twin cooling towers, and two 140mm cooling fans which promise a significant decrease in temperatures. It comes with good looks and easy installation property – a plus-plus!

However, unlike its name suggest, this CPU air cooler doesn’t have an RGB lightning offer and has an incomplete Intel CPU and AMD socket support.

More Features:

  • Weight: 1.21Kg 
  • Compatibility: AM2, AM2+, AM3, AM3+, AM4, FM2+
  • Warranty: 5 years
  • Noise Volume: 34.2dBA
  • Dimensions: 171.5mm x 139.7mm x 133.4mm

Buy on Amazon.

Noctua NH-D15

Are you searching for a CPU cooler with the price of a CPU air cooler and the performance of a CPU liquid cooler? Noctua NH-D15 is the answer. It runs quiet and cool. Noctua CPU cooler also has a dual heatsink tower and two 140mm fans.

However, Noctua NH-D15 is a bulky CPU cooler, and hence, it won’t work with tall RAM modules clearance. 

More Features:

  • Weight: 1.32Kg 
  • Compatibility: Intel LGA 775 – LGA 2066, FM1 – FM2+, AMD AM2 – AM3+ 
  • Warranty: 6 years
  • Noise Volume: Up to 24.6 dBa
  • Dimensions: 165mm x  150mm x 161mm

Buy on Amazon

Cooler Master Hyper 212 EVO

Finding a cool CPU air cooler at an affordable price? Cooler Master Hyper 212 EVO is the answer. It promises unmatched performance with four direct contact heat pipes, a better aluminum heatsink, and a 120mm high airflow fan. 

The cooler isn’t massive and hence will stay out of the way of larger RAM modules. You won’t find anything more affordable offering everything else than Cooler Master CPU cooler. 

Also, it has added AM4 compatibility. However, its installation is a little more complicated, and a second fan isn’t included. 

More Features:

  • Weight: 0.59Kg 
  • Compatibility: Intel LGA 775-20166, AMD AM2-AM3+, FM1-FM3+, AM4
  • Warranty: 2 years
  • Noise Volume: up to 36dBA
  • Dimensions: 120mm x 79.7mm x 158.5mm 

Buy on Amazon

Be Quiet’s Pure Rock 2

Be quiet’s pure rock 2 is the best price-to-performance ratio. It has 150W TDP cooling efficiency, four 6mm heat pipes that promise high performance with HDT, and has asymmetrical construction that prevents blocking memory slots. 

Low budget, silent operation, and aesthetic design are what pure rock 2 is known for. With its brushed aluminum finish and installation kit, you can mount it easily on the top of the mainboard. However, this model’s thermal performance reduces at low fan speeds. 

More Features:

  • Weight: 0.59Kg
  • Compatibility: AMD AM3+, AM4, Intel 115x, 2011x, 2066
  • Warranty: 3 years:
  • Dimensions: 158.8mm x 120.1mm x 63.5mm

Buy on Amazon

Phanteks PH-TC14PE CPU Cooler

Phanteks PH-TC14PE is an easy-install CPU air cooler. Its two 140mm fans and two radiators that promise extreme heat dissipation and are best for overclocking. Although it is a bit larger than other CPU air coolers, it will still fit in many computer towers. 

The builders have made appropriate color choices while manufacturing it, but still, looks could be better. Also, there is an issue with memory clearance, and it is more costly for a CPU air cooler.

More Features:

  • Weight: 1.25Kg
  • Compatibility: Intel LGA775, LGA1155, LGA1156, LGA1366, LGA2011, AMD AM2, AM2+, AM3, AM3+, FM1, FM2
  • Warranty: 5 years
  • Noise Volume: 20dBA at most
  • Dimensions: 140mm x 140mm x 25mm

Buy on Amazon.

You Always Need a Thermal Paste!

No matter what CPU air cooler you use, you always need a good quality thermal paste, and we can’t stress this fact enough. CPU cooler and thermal paste both have different functions in the CPU. 

When thermal paste transfers heat from the CPU’s integrated heat circuit to the CPU cooler, the CPU cooler dissipates it out of the CPU. 

Also read: How CPU Cooler and Thermal Paste Work Together?

We recommend you buying N-B Max Pro for extreme thermal conductivity and its electrical insulative property. It is best for overclocking and will spread smoothly, avoiding any leakage in the CPU. In case it leaks, it won’t cause any damage to the CPU.

Also, it comes with a free kit that includes an applicator, a spatula, an alcohol pad, and a microfiber cloth that will help you apply thermal paste.

FAQs – 5 Best CPU Air Coolers to Buy in 2021

Below are some frequently asked questions to help you buy the best CPU air coolers in 2021. 

Why Do I Need a CPU Air Cooler?

We need a CPU air cooler to help dissipate heat. The thermal paste helps transfer heat from CPU IHS to the CPU cooler, and the CPU cooler dissipates heat out of the CPU. This way, the temperature of the CPU decreases, and it works smoothly and coolly. 

Without a CPU air cooler, your CPU will become extremely hot and damage permanently within seconds. You need to remember that no matter how good a CPU cooler is, you always need a good thermal paste.

Also read: The best thermal pastes to use in 2021

How to Choose a CPU Air Cooler?

Before deciding on a CPU cooler, you need to check what you are using it for. If your budget is high, you should go for a CPU liquid cooler as it provides you much more than CPU air coolers.

Apart from that, you need to check its case compatibility, looks, and ability to handle excess stress. Also, a good CPU cooler should not produce extra noise and give value to money. 


Finding the best CPU air cooler is no more trouble. We have tested all these CPU air coolers and presented you with accurate results. No CPU cooler is better than the other. It all depends on what load you will put on the computer and what your budget is.

Don’t forget to buy a good quality thermal paste – N-B Max Pro along with the CPU air cooler, so you get the best PC performance. 

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