Best CPU cooler for Ryzen 7 5800X 


Best Ryzen 7 5800X air cooler

Noctua NH-D15

Noctua NH-D15

Before we jump into our in-depth reviews of the best Ryzen 7 5800X CPU coolers, it’s important that we explain some things to help you better understand how CPU coolers work and the things to consider when shopping for a new one. 

Why do we need a CPU cooler? 

CPU coolers play an important part in every PC, whether that be an air cooler, AIO cooler, or full custom loop. Every CPU cooler aims to achieve the same thing – a cool CPU. 

Every CPU requires electricity to function, we hope this isn’t news to everyone. But what might be is that every electrical component wastes energy, no matter how big or how small – that’s just how life works. Energy waste, in most cases, presents itself as thermal energy. Electrical components arent 100% efficient so they waste some of that energy as heat. 


In terms of PC components, we have an idealism for this: TDP. TDP stands for thermal dynamic power and it’s the maximum amount of thermal energy a component can emanate under normal operating conditions. 

It’s TDP that every CPU cooler, or every electrical cooler in the world more accurately, aims to eliminate. 

How do CPU coolers work? 

CPU coolers are pretty complicated in terms of actual physics, but they aim to fulfill one single purpose and that’s to dump as much heat out of the CPU as possible. CPU coolers achieve this in a couple of ways. 

There are some basic physics to understand if you want to know exactly how CPU coolers work. Heat dissipation is performed via three main methods, conduction, convection, and radiation. Most CPU coolers use at least one of the three methods at some stage throughout the cooling cycle, even liquid coolers. 

Heat moves from the CPU to the cold plate, then through the heat pipe, the heat is transferred to the heatsink. This is where, with the aid of a fan, the heat is dissipated into the air around the heatsink. 

This is a very simple explanation of how CPU coolers work and we have one far more in-depth in our “Best CPU cooler for Ryzen 9 5900X” article. 

Things to consider 

There are some things to consider when thinking about upgrading your CPU cooler. 

AIR vs liquid cooling 

Both air and liquid cooling are viable options when it comes to CPU cooling, but one is superior to another in terms of performance and can end up saving you a pretty penny if you know what you need.

Air cooling 

OverClockers UK PBlade 3 PC Build 17

Air cooling has been around for as long as computers have, and even the most advanced forms of water cooling still use bits of air cooling to dissipate heat away from its radiators. 

There’s not a whole lot to say about air coolers, other than the fact they are some of the cheaper, and simpler options on the market. Cheap doesn’t necessarily mean bad though, as you will see some air coolers can even compete with lower-end AIO and liquid coolers on the market. 

Air coolers are easy to install and maintain, and their simplicity is certainly one of their strengths. 

Liquid cooling

Liquid cooling comes in a couple of different forms, AIOs and custom loops. AIO coolers are all the goodness of custom loops rolled into one neat little package, whereas custom loops can be as complex or as simple as you want them to be. 


Best CPU cooler for Ryzen 7 5800X bestaio 2

AIO liquid coolers consist of a few components, a water block, a built-in pump, transport tubes, a radiator, and a few fans. These components comprise a mid-level water cooling system. 

AIOs are closed, meaning you cant open them up to access the pump or block internals. This enclosed design means that AIOs are less susceptible to dust build-up and damage around the pump area but still suffer the same dust build-up on radiators and fans, like any other cooling system – depending on your airflow configuration. 

AIOs are generally less expensive than full custom loops, but they can be much more expensive than a decent air cooler. There are a lot of AIO liquid coolers out there in the wild and they all come in different shapes and sizes, some even feature LCD screens mounted onto the water block to display images, GIFs, or system information. 

Despite the increase in price, AIOs do perform significantly better than air coolers in most cases. 

Custom loops 

bestwatercool 3

Custom loops are the most expensive way to regulate CPU temperatures. The goal of custom loops is the same as AIO coolers, to use water to draw heat from the CPU to a radiator. The trick is that custom loops do it a lot more efficiently, as there’s usually more surface area for cooling within the loop and a larger volume of water.  

Custom loops can use any size reservoir with a pump capable of moving large volumes of water rapidly. They can also incorporate whatever size radiator is required multiple times into the system. This combination of advantages means custom loops can cool a lot more efficiently than AIOs as they aren’t restricted to a specific size. This being said you still need to operate within the confines of your PC case.  

Maintenance is a lot harder on a custom loop, however. Custom loop maintenance involves draining the entire system of all water and then attempting whatever repairs or cleaning is necessary. You should also replace the cooling solution twice yearly to avoid issues. 

Besides the points we mentioned, a custom loop isn’t too much different than an AIO in an operational sense, it does the same thing. 


Best CPU cooler for Ryzen 7 5800X am4 socket


When you’re selecting any CPU cooler it’s important you make sure that the cooler fits onto the CPU socket on your motherboard. This isn’t a problem in this day and age as most coolers ship with compatibility for most sockets. However, if you’re opting for an old cooler whilst owning a newer socket, it would be wise to check the compatibility sheet online or within your CPU cooler manual. 

PC case requirements 

You need to ensure your PC case supports the CPU cooler you’re planning on purchasing, this may be a height requirement for air coolers or radiator dimensions for liquid coolers. Having a CPU cooler that does not fit into your case is not ideal for obvious reasons. 

Best Ryzen 7 5800X cooler 

Here we will list the three CPU coolers we feel are the best choice for the Ryzen 7 5800X CPU. 

Asus ROG RYUJIN II 360 CPU Cooler

Asus ROG RYUJIN II 360 CPU Cooler


Intel: LGA 1150, 1151, 1152, 1155, 1156, 1200, 1366, 2011, 2011-3, 2066 AMD: AM4, TR4*

3x Noctua NF-F12 InductrialPPC 2000 PWM Fans

3.5″ Full Color LCD Screen

The ASUS ROG Ryujin II is one of the most visually pleasing AIO coolers in the world in our opinion, mostly thanks to its huge pump and predominant, industrial-looking LCD screen.

This model is available in both 240 and 360mm variants, giving builders with different form factor cases some flexibility no matter the size of the PC case. 

The main talking point of the Ryujin II is the addition of the LCD screen, which allows any image or GIF to be displayed. The LCD screen has full AIDA64 support, meaning you can display current system information on the vivid 3.5″ full-color screen if you so wish.

The Ryuijin ii also features 380mm sleeved tubing comprised of rubber, to add durability and improve the visuals over the standard tube designs. 

All in all, we have a beefy, efficient radiator that will provide your 5800X with all the cooling it needs, and the inclusion of a high-flow water pump means your CPU will never be short of water to cool it. 

You can check out our full Ryujin ii review here.