Keeping your processor cool is one of the most important tasks when building a PC. No matter how powerful your i5-8400 PC is, no matter how much RAM or GPU you have. If you don’t have enough cooling, nothing works! Without proper air circulation and cooling, your PC will overheat, shut down and cause physical damage to all other components. So you need a processor cooler! In this article we will find and research the best CPU cooler for i5 8400, because that’s what you came for!

Just a few years ago, the cooling of PCs was a given, but today, as the performance of components increase, the trend is toward high-end PCs, and you can not ignore the cooling or airflow if the performance is too high. CPU coolers help dissipate heat and keep your CPU temperature under control. This guarantees a longer life span of the processor and other components!

Without proper cooling you will often suffer from PC downtime and sooner or later you will notice that your processor is physically damaged by excessive heat. This must be avoided at all costs. It is more profitable to invest in a mid-range CPU cooler than to lose all components (including your CPU) and buy new ones.

Since you have an i5-8400 processor, you need a processor cooler that dissipates heat and is compatible with the level and temperature of your processor! For this note we found more than 10 processor coolers on the market and researched them all. After intensive research and many hours of work, we have selected the 5 best i5 8400 CPU coolers that not only keep the heat out, but are also compatible with the heat level of your CPU!

We also found and checked the coolers for i7-9700k and i7-6700k, and you can also check them if you need a cooler for these processors! You can find more processor coolers by clicking here!

Let’s start with the critics!

Best CPU cooler for i5 8400 Vu!

Cooler Evo Master Hyper 212Overview

Cooler Master Hyper 212 Evo magazine

Let’s start by looking at an affordable but very powerful processor cooler that meets all your cooling needs without breaking the bank. Cooler Master offers its customers some of the best computer accessories and cooling solutions, and the Hyper 212 Evo is also the name of the manufacturer.

Compatible with a variety of processor connections, including Intel LGA 1366/1155/1151/1150, so the fan can be installed on most next-generation Intel processors. The i5 8400 has an LGA1151 connection, and this cooler is perfect for it and probably the best CPU air cooler for the i5 8400 if your budget is tight. In addition, an AMD AM4 mounting kit (also compatible with AMD FM2/FM1/AM3+.) is included so that the cooler can be used with the new generation of AMD Ryzen processors.

The cooler uses a durable slide bearing and is connected to the motherboard via a 4-pole power connector, while the very low power consumption (2.64 W) makes the Master Hyper 212 Evo cooler very energy efficient.

Immediately after unpacking you will see the 120mm fan pre-installed on top of the cooler. The fan seems to be enclosed in a transparent black frame, and the fan itself is slightly transparent. Unfortunately, you need to remove the fan before installing the entire motherboard. The fan can read speeds from 600 to 2000 rpm using PWM control. The design with two towers allows the installation of an additional fan from above to further improve cooling.

The fan is integrated with CDC (Continuous Direct Contact) technology, where the copper heating pipes are placed close together to facilitate heat transfer and improve heat dissipation.

If you go to the side, you will see the most visible feature of the refrigerator: 4 heat sinks with direct contact. Unlike most other coolers, the Cooler Master uses flat copper heating tubes that are located a short distance from each other rather than on a simple block. The heat pipes provide much better heat dissipation and improve the total cooling capacity of the Hyper 212 Evo. The tubes go all the way up to connect the aluminium fin at the top, while the Cooler Master logo is placed in the middle of the fan. With all these features, the Hyper 212 is probably the best i5 8400 air cooler you can get right now.

Key features

  • It is embedded in CDC technology.
  • Double mounting system with pre-installed 120 mm fan.
  • Has 4 direct contact heat pipes for better heat dissipation.
  • Low power – 2.64 W.

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UX100 ARGB Check (budget cooler for i5-8400)

Thermaltake UX100 ARGB Review - Cheap CPU cooler for i5 8400!

Thermaltake took a completely different approach and introduced the UX100 ARGB, a very compact and powerful air cooler. With dimensions of 122.3 x 122.3 x 66.1 mm, the simplified and flat design of the cooler is already visible. One of the positive points of this cooler is that it offers moderate cooling performance at a very low price, as well as great aesthetics with its RGB lighting. Air coolers are quite cheap, and this is one of the best i5 8400 air coolers for small processors.

The nickel-plated copper-based fan rests quite firmly on the processor and also provides excellent heat dissipation. The processor cooler is compatible with almost all new generation Intel processors and AMD Ryzen processors, so you probably won’t have any compatibility issues. At the top of the cooler there is a 120 mm fan with nine flame-shaped blades.

The fan is transparent to allow RGB light through and has a sticker with the Thermaltake logo in the middle. At a rated voltage of 12 V, the fan can reach a speed of 1800 rpm with a noise level of 26.92 dB(A). The air cooler is connected to the motherboard by means of a 3-pin connector. Its flat design not only makes it an excellent cooler for small systems, but it can also be used as an i7 8700k processor cooler.

The cooler is equipped with 15 addressable RGB LEDs that support each motherboard with an addressable 5V RGB header and displays up to 16.8 million colors to give gamers the gaming look they need. The heat-absorbing high-volume airflow concept generates large volumes of air that pass through an aluminium cooler to ensure unrestricted airflow.

The ARGB Thermaltake UX100 ARGB uses a self-lubricating hydraulic bearing for quiet operation and improved thermal cooling. If you need a compact cooler, the Thermaltake UX100 ARGB is usually the best cooler for the i5 8400 processor.

Key features

  • It has 15 addressable RGB LEDs, which support all motherboards with a 5V RGB header.
  • Uses self-lubricating hydraulic bearings for efficient and long lasting operation.
  • 9 fins with high airflow for better cooling.
  • High quality aluminium radiator.

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Corsair H115i RGB Platinum Review (Best Quiet Cooler)

Corsair H115i RGB Platinum Review - The best silent processor cooler for i5 8400!

Whether you are looking for fast memory modules, cooling solutions or processor housings, Corsair is always ready to offer you the best range of computer products at the price they sell. The liquid cooling system blows all other air coolers into the wind thanks to improved cooling properties, better heat dissipation and overall improved performance. The Corsair H115i RGB Platinum is one of the flagship AIO liquid cooling systems in the H115i series. The cooler combines huge coolers and a beautiful RGB light image to bring out the best in the players.

If you turn the H115i RGB Platinum, you will find a satin copper base with an already applied thermal paste. The product comes with different mounting brackets and racks so that the cooler can be used with all current models of AMD (AM2(+), AM3(+) AM4, FM1, FM2(+), TR4) and Intel processors, allowing it to be used as a processor cooler for i9 9900k processors. The cooler is available in two different radiator sizes – 240 mm and 280 mm.

At the top of the solid cooling fields of the chiller is a pair of 140 mm ML PRO Series PWM controlled magnetic levitation fans controlled by the ML PRO RGB LED Series, which provide excellent air circulation and heat dissipation. To power the fan’s backlight, the cooler is connected to the motherboard via a 4-pin connector, and to control the RGB backlight, simply use the Corsair iCUE software, which offers dozens of configuration options. The 15 RGB lamps in the fridge are available for individual use. Another bonus is the 5-year limited warranty.

The fan can read speeds up to 2000 rpm and thanks to the thermally optimised cooling plate and the low-noise pump construction, the cooler operates with a very low noise level.

Key features

  • 15 individually addressable RGB LEDs bring your game system to life.
  • The two radiators with a diameter of 280/240 mm ensure better air circulation and heat dissipation.
  • Including 2 x 140 mm LED RGB magnetic levitated fans of the ML PRO series.
  • The low-noise construction of the pump ensures a low noise level.
  • 5-year limited warranty.

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Introduction of the MasterLiquid ML360R RGB Chiller (Author’s choice) (Amazon choice)

MasterLiquid ML360R RGB Overview - The best CPU cooler for i5 8400!

The name Master Cooler explains it all. The MasterLiquid ML360R RGB offers many all-in-one cooling solutions and stands out as the best CPU cooler for i5 8400 available on the market today. Dual heat dissipation system, huge projectors, RGB LEDs and FEP sleeves, the ML360R has it all.

The MasterLiquid ML360R RGB cooler has a compact, two-chamber design using high quality construction materials such as fiberglass and polyphenylene sulfide, which make the cooler resistant to oxidation and moisture.

To ensure excellent heat transfer, the cooler is equipped with a microchannel-copper cold plate to maximize the contact surface. The master cooler has made sure you will never have compatibility issues, so the ML360R supports all current socket types, including AM4, AM3+, AM2+, AM2, FM2, FM1 connectors for AMD and LGA2011-v3, LGA2066, LGA2011, LGA1150, LGA1156, LGA1200, LGA1151, LGA1366, LGA775 for Intel processors, so users can also use them as coolers for i7 7700k.

The cooler pump has a hexagonal company logo in the middle and several addressable RGB LED lights that give the cooler a unique look every time you start up the system. Directly under the nylon braid is a rubber hose that connects the cooler to the pump.

A gigantic 360 mm aluminium radiator with optimal fin density makes it possible to increase the airflow. At the top of the cooler there is a trio MasterFan MF120R ARGB fans that provide high airflow and maximize air pressure to facilitate liquid cooling. Equipped with addressable LEDs, this refrigerator is sure to put a smile on the faces of the players outside. In general, we don’t consider coolant to be cheap, but it is certainly the best coolant for i5 8400.

Key features

  • The aluminium cooler with a diameter of 360 mm ensures excellent heat dissipation.
  • Equipped with 3 x 120 mm MasterFan MF120R ARGB fans with addressable LEDs.
  • Has a robust and flexible FEP hose with sleeve.
  • Compact and waterproof two-chamber design.
  • 2 year limited warranty.

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MasterLiquid Lite 120 ChillerOverview

Introduction of MasterLiquid Lite 120 - The best i5 8400 processor cooler!

It is not always necessary to purchase a fully-fledged AIO water cooling system with a solid chiller, especially if you have a medium-sized budget installation. To find this solution, Cooler Master offers the ML MasterLiquid Lite 120 series. We already mentioned the ML360R in this article, but few people can afford such a high quality water cooler, so the ML Lite 120 is a great alternative.

The MasterLiquid Lite 120 chiller combines all the key features of its high-tech liquid cooling systems and integrates them into a smaller chiller frame. Like the ML360 R, the ML Lite 120 features a flat, compact, dual dispersion pump for better cooling efficiency at low noise levels. Equipped with an air balance fan, the cooler operates efficiently and minimizes noise, vibration and stuttering.

You may not get the addressable RGB LEDs found in high-end liquid coolers, but you do get limited LED functionality with the white LED logo. For better heat transfer from the integrated heat distributor of the processor, the MasterLiquid Lite 120 is equipped with a solid copper heatsink, which is designed with millimetre precision. The single fan, flat design cooler fits all CPU enclosures and is compatible with all current AMD and Intel CPU connections (LGA2066, LGA2011-v3, LGA2011, LGA1366, LGA1200, LGA1151, LGA1150, LGA1155, LGA1156, LGA775, AM4, AM3+, AM2+, AM2, FM2+, FM1).

The liquid cooler has a 120 mm cooler with 120 AB MasterFan, controlled by a PWM controller and equipped with LEDs. With a power output of 3.96 W, the cooler works efficiently and does not consume much power when connected to the motherboard via a 4-pin connector.

Key features

  • Compact dual-dispersion pump installation for quiet operation.
  • The fan is designed to reduce vibration and noise during use.
  • 120 mm MasterFan LED projector controlled by PWM and 120 AB.
  • High-quality FEP tubes for efficient fluid flow and heat exchange.

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Conclusion– What is the best i5 8400 processor cooler?

Cooling solutions extend the life of your computer system by eliminating excessive heat, keeping your system cool and extending the life of your PC components. Compared to all other components, refrigeration systems are available on the market at lower prices, and even if they are slightly more expensive, they are a good long-term investment.

In this article we have discussed some of the best coolers available for the Intel i5 8400 processor and give you our recommendations on the best. If you are looking for a processor cooler for quiet liquid cooling, we recommend the Corsair H115i RGB Platinum with a quiet pump design for maximum peace of mind.

You probably have a budget. In this case, the MasterLiquid Lite 120 Cooler is an excellent AIO refrigerant, which is probably the best liquid refrigerant if you are short of cash. After all, AIO liquid cooling systems always have an advantage over air coolers because of their low noise level and generally more efficient cooling. That’s why we announce the MasterLiquid ML360R RGB cooler as the best processor cooler for the i5 8400.

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