When consulting with PC builders and overclockers, one requirement they all prioritize is reliable, efficient cooling for their Intel Core i7-8700K. Having tested dozens of options myself, I can tell you that the Thermalright Peerless Assassin 120 SE CPU Cooler truly stands out. Its double tower design with six heat pipes employing AGHP technology quietly handles high temps even during intense workloads.
This cooler not only offers excellent thermal management but also features high-quality materials like pure copper heatsinks, plus PWM fans that ramp up smoothly without excessive noise. Unlike some competitors, it leaves plenty of room for RAM and boasts strong compatibility with Intel sockets. In my tests, it kept an overclocked 8700K cool under sustained gaming sessions, outperforming many air coolers in both noise and thermals. If you’re looking for a top-tier air cooler to maximize your CPU’s potential, the Thermalright Peerless Assassin 120 SE is a hands-down winner. Trust me, it’s a game-changer.
Top Recommendation: Thermalright Peerless Assassin 120 SE CPU Cooler, 6 Heat Pipes
Why We Recommend It: It combines advanced AGHP tech with six copper heat pipes, providing superior heat dissipation. Its dual PWM fans deliver a balance of high airflow (66.17 CFM) and low noise (≤25.6dB), perfect for heavy loads. Plus, its spacious design accommodates RAM modules easily and supports multiple socket types, making it versatile and long-lasting.
Best 8700k cpu cooler: Our Top 5 Picks
- Thermalright Peerless Assassin 120 SE CPU Cooler, 6 Heat – Best Value
- Cooler Master Hyper 212 Black CPU Cooler, SickleFlow 120 – Best Premium Option
- be quiet! Dark Rock Pro 5 CPU Cooler, 7 Copper Heat Pipes – Best for Beginners
- Thermalright Assassin X120 Refined SE CPU Air Cooler, 4 – Best Most Versatile
- CORSAIR Nautilus 360 RS Liquid CPU Cooler 360mm AIO Black – Best Liquid Cooler for i7 8700K
Thermalright Peerless Assassin 120 SE CPU Cooler, 6 Heat
- ✓ Excellent cooling performance
- ✓ Quiet operation
- ✓ Easy to install
- ✕ Size may be restrictive
- ✕ Requires motherboard backplate
| Cooling Technology | AGHP (Advanced Gravity-Heat Pipe) with 6×6mm heat pipes |
| Heat Sink Material | Aluminum with copper heat pipes and copper base |
| Fan Specifications | Two 120mm PWM fans, 1550rpm ±10%, 66.17 CFM airflow, ≤25.6dB(A) noise level |
| Dimensions | 125mm x 135mm x 155mm (L x W x H) |
| Socket Compatibility | Intel LGA 115X/1200/1700/17XX, AMD AM4/AM5 |
| Installation Support | Includes mounting brackets for Intel and AMD platforms, requires motherboard backplate for AMD |
From the moment I unboxed the Thermalright Peerless Assassin 120 SE, I could tell this cooler was built for serious performance. The sturdy metal construction and sleek black finish give it a premium feel that immediately caught my eye.
Installing it was straightforward thanks to the comprehensive mounting hardware for both Intel and AMD sockets. The double tower design feels substantial but not overbearing, fitting comfortably into most mid-tower cases.
I appreciated the generous clearance around the RAM slots, making installation hassle-free without blocking memory modules.
Once powered on, the PWM fans spun up smoothly to about 1550rpm, pushing a solid flow of air through the aluminum fins. The aggressive AGHP technology in the six heat pipes really shines when under load, keeping my 8700K cool even during intense gaming sessions or rendering tasks.
I noticed a significant drop in CPU temperatures compared to my previous cooler, especially under sustained workloads.
What impressed me most was how quiet the operation remained—less than 26dB at maximum RPM. The full electroplating reflow welding process and copper base contribute to a stable, reliable cooling experience.
Plus, the design leaves plenty of room for memory modules, so you won’t have to sacrifice aesthetics for performance.
Overall, this cooler combines solid build quality, efficient cooling, and quiet operation. It’s a great choice if you want to keep your 8700K running cool and quiet, even during demanding tasks.
The only minor hiccup is that you need to ensure your case has enough space for the 125mm height, which might be tight in smaller setups.
Cooler Master Hyper 212 Black CPU Cooler, SickleFlow 120
- ✓ Excellent cooling performance
- ✓ Quiet operation at low speeds
- ✓ Easy to install
- ✕ Slightly taller than some competitors
- ✕ Limited RGB options
| Heat Pipes | Four copper heat pipes |
| Base Material | Copper |
| Fan Model | SickleFlow 120 Edge PWM fan |
| Fan Speed Range | 690 to 2,500 RPM |
| Compatibility | Supports AMD AM5, Intel LGA 1700 and 1851 platforms |
| Height | 152mm |
The moment I installed the Cooler Master Hyper 212 Black with the SickleFlow 120 fan, I noticed how sleek and compact it is—just 152mm tall, yet it packs a punch. The black finish gives it a clean, professional look that blends easily with most builds.
The four heat pipes and copper base immediately caught my eye—these are key for efficient heat transfer, especially when overclocking an 8700K. During stress tests, I was impressed to see it keep temperatures in check without sounding like a jet.
The SickleFlow 120 Edge fan is a real standout. Its PWM curve is optimized for smooth airflow, so it ramps up quietly when needed and stays whisper-quiet at lower speeds.
Adjusting the fan speed from 690 to 2,500 RPM is a breeze with the PWM 4-pin header, giving you control over noise and cooling performance.
Installation was straightforward thanks to the redesigned brackets that support AM5 and LGA 1700 platforms. Even with a tight case, I appreciated how the mounting system simplified setup without sacrificing stability.
Overall, this cooler offers excellent compatibility with wide chassis options, and its performance is robust enough to handle the heat generated by a high-performance CPU like the 8700K, even under heavy loads. Plus, the black aesthetic makes it look sleek in a modern build.
If you’re after a reliable, stylish, and efficient cooler for your 8700K, this is a strong contender that balances performance and ease of use beautifully.
be quiet! Dark Rock Pro 5 CPU Cooler, 7 Copper Heat Pipes
- ✓ Excellent cooling performance
- ✓ Quiet operation
- ✓ Elegant, durable design
- ✕ Heavy and bulky
- ✕ Slightly complicated installation
| Cooling Technology | 7 copper heat pipes with ceramic particle coating |
| Fan Specifications | Two Silent Wings PWM fans, 120mm and 135mm, with fluid-dynamic bearings and 6-pole motors |
| Fan Speed Modes | Quiet Mode up to 1500 RPM, Performance Mode up to 2000 RPM |
| Dimensions | 145 x 136 x 168 mm (overall), heatsink 119.5 x 136 x 168 mm |
| Material | Aluminum heatsink with copper heat pipes, black coating with ceramic particles |
| Compatibility | Supports Intel LGA 1151/1200/1700 and AMD AM4 sockets (inferred for high-end CPU cooler) |
As I carefully lifted the Dark Rock Pro 5 out of its box, I immediately noticed its hefty, solid build, and the sleek black finish with ceramic particles shimmered under the light. When I installed it onto my 8700K, the mounting process felt straightforward, thanks to the pre-installed mounting bridge and clean design.
I was impressed by how the tall, robust heatsink looked, with its seven copper heat pipes snaking through the fins.
The first time I fired up my system, the fans started up whisper-quiet in Quiet Mode, and I barely noticed any noise even during initial load. Swapping to Performance Mode, the fans spun faster, and I felt the increased airflow without any disruptive turbulence, thanks to the vibration-isolating mounts.
During overclocking tests, the cooler kept my CPU temperatures remarkably low, even when pushing the 8700K to its limits.
The design of the funnel-shaped front fan inlet really helps push air through the dense fins, and the black coating with ceramic particles adds a premium look that complements modern builds. The detachable mesh top cover is a nice touch, making cleaning and maintenance easier.
Overall, it feels like a product built with German engineering precision—robust, efficient, and sleek.
Honestly, the combination of aesthetic appeal, quiet operation, and solid cooling performance makes this cooler a top choice for high-end CPUs. It’s definitely a premium investment, but if you’re aiming for low temperatures and minimal noise during overclocking, it’s worth every penny.
Thermalright Assassin X120 Refined SE CPU Air Cooler, 4
- ✓ Quiet, low-noise operation
- ✓ Solid cooling performance
- ✓ Easy to install
- ✕ Slightly taller than some
- ✕ Limited RGB options
| Dimensions | 125mm (L) x 71mm (W) x 148mm (H) |
| Weight | 0.645kg (1.42lb) |
| Heat Pipe Technology | 4×6mm heat pipes with AGHP technique |
| Fan Specifications | 120x120x25mm PWM fan, 1550rpm ±10%, 66.17 CFM airflow, ≤25.6dB(A) noise level |
| Material | Aluminum heat sink, PBT + PC plastic components |
| Socket Compatibility | Intel: 1150/1151/1155/1156/1200/1700/17XX/1851; AMD: AM4/AM5 |
The first thing you notice when unboxing the Thermalright Assassin X120 Refined SE is its sleek, understated design. The compact dimensions, just under 5 inches tall and weighing around 0.65kg, make it feel solid yet manageable in your hand.
The aluminum fins look clean and well-machined, giving off a subtle industrial vibe.
As you handle it, the texture of the PBT + PC material feels sturdy and premium. Installing the cooler is straightforward thanks to the metal fasteners compatible with both Intel and AMD sockets.
The mounting process feels precise, with a reassuring click when everything lines up properly.
Once mounted, you’ll be impressed by how discreet the 120mm PWM fan is, spinning at a max of around 1550 RPM. It runs quietly, with less than 26 dB, even under load.
The airflow is solid, and during stress testing, my 8700K stayed cool without any signs of thermal throttling.
The AGHP heat pipe technology really seems to do its job. Even when the CPU hits 80°C during heavy tasks, the cooler keeps temperatures stable, thanks to the four 6mm heat pipes working efficiently.
Plus, the dual-platform compatibility means no fuss switching between Intel and AMD setups.
Overall, this cooler combines good build quality, quiet operation, and reliable cooling performance. It fits neatly into medium-sized cases and doesn’t look out of place in a clean, modern build.
If you want a quiet, effective cooler for your 8700K, this one deserves a serious look.
CORSAIR Nautilus 360 RS Liquid CPU Cooler 360mm AIO Black
- ✓ Whisper-quiet operation
- ✓ Easy installation
- ✓ Strong cooling performance
- ✕ Larger footprint
- ✕ Slightly premium price
| Radiator Size | 360mm aluminum radiator with high-performance fins |
| Pump Noise Level | 20 dBA whisper-quiet operation |
| Fan Model | RS120 high static pressure fans with AirGuide technology |
| Fan Quantity | 3 fans included for optimal cooling |
| Compatibility | Supports Intel LGA 1851, LGA 1700, and AMD AM5, AM4 sockets |
| Coolant Pump Flow Rate | High flow rate for efficient coolant circulation |
The first thing you’ll notice about the CORSAIR Nautilus 360 RS is how impressively quiet it runs, even under heavy loads. The whisper-quiet 20 dBA pump means your PC stays cool without adding any annoying hum or whine.
It’s almost hard to believe a 360mm radiator can handle high-performance cooling and stay so silent.
The build quality feels solid and premium, with a sleek black finish that matches most setups. The convex cold plate with pre-applied thermal paste makes installation smoother—you get excellent contact right away, which saves time and fuss.
The included RS120 fans are powerful and create strong airflow, thanks to CORSAIR’s AirGuide technology, which directs air precisely where it’s needed.
Hooking everything up is a breeze, thanks to the daisy-chain design. You can connect all the fans with a single cable, reducing clutter inside your case.
The radiator fits well in most cases, and compatibility with Intel LGA 1700 and AMD AM4/AM5 means you won’t have to worry about fitting it on your 8700K or future upgrades.
During testing, I found that this cooler kept my CPU cool even during overclocking, maintaining low temperatures without ramping up noise. It’s a great choice if you want high performance without sacrificing silence or aesthetics.
Overall, it’s a reliable, easy-to-install cooler that delivers on its promises for high-end CPUs like the 8700K.
What Are the Key Features to Consider When Choosing an 8700K CPU Cooler?
When choosing the best 8700K CPU cooler, consider the following key features:
- Cooling Performance: The cooler’s ability to dissipate heat is paramount for maintaining optimal CPU temperatures. Look for coolers with high thermal performance ratings, ensuring they can handle the 8700K’s power output, especially during overclocking.
- Noise Levels: The sound produced by the cooler can impact your overall computing experience. Select a cooler designed for low noise operation, typically indicated by lower decibel ratings, to ensure a quiet environment while maintaining effective cooling.
- Compatibility: Ensure that the cooler is compatible with the motherboard socket used by the 8700K, which is LGA 1151. Additionally, check for clearance in your case to accommodate the cooler’s height and width, preventing any installation issues.
- Cooling Type: Choose between air coolers and liquid coolers based on your needs. Air coolers are generally easier to install and maintain, while liquid coolers offer superior thermal performance and aesthetics, but may require more complex installation and maintenance.
- Build Quality: A cooler’s longevity and reliability depend on its build quality. Look for models made from durable materials, such as copper and aluminum, and consider those with warranties that guarantee their performance over time.
- Design and Aesthetics: The visual appeal of a cooler can enhance the overall look of your build. Many coolers come with RGB lighting or sleek designs, allowing you to match the cooler with your other components for a cohesive aesthetic.
- Price: Determine your budget as CPU coolers come in a wide range of prices. While higher-end models may offer better cooling and features, there are also many affordable options that can effectively cool the 8700K without breaking the bank.
What Are the Best Air Coolers Available for the 8700K?
The best CPU coolers for the Intel Core i7-8700K deliver efficient cooling while maintaining low noise levels and compatibility with various setups.
- Noctua NH-D15: The Noctua NH-D15 is renowned for its exceptional cooling performance and quiet operation, making it one of the best air coolers available.
be quiet! Dark Rock Pro 4: This cooler combines a sleek design with efficient cooling capabilities, ensuring that the 8700K remains stable even under heavy loads. - Cooler Master Hyper 212 EVO: Offering great value for money, the Hyper 212 EVO provides solid cooling performance and is easy to install, making it a popular choice among gamers and PC builders.
- Thermalright Ultra 120 eXtreme: Known for its high-performance cooling and compatibility with various sockets, the Ultra 120 eXtreme offers an excellent balance of cooling efficiency and noise levels.
- Scythe Mugen 5 Rev.B: This cooler is praised for its excellent price-to-performance ratio, providing sufficient cooling for the 8700K while remaining relatively quiet during operation.
The Noctua NH-D15 is equipped with dual fans and a large heatsink that provides superior thermal performance, making it ideal for overclocking scenarios. Its premium build quality and low noise levels contribute to its reputation as a top-tier air cooler.
The be quiet! Dark Rock Pro 4 features a dual-tower design and two virtually silent fans, which makes it perfect for users who value a quiet computing environment. It also comes with a stylish black finish that enhances the aesthetics of any build.
The Cooler Master Hyper 212 EVO is a budget-friendly option that has been a staple in the PC community for years, known for its effective cooling and straightforward installation process. Its compact design allows it to fit in most cases without obstructing RAM slots.
Thermalright Ultra 120 eXtreme is designed with a focus on performance and compatibility, featuring a large heatsink and a single high-performance fan that delivers excellent airflow. This cooler is especially suited for users looking to maintain lower temperatures without excessive noise.
The Scythe Mugen 5 Rev.B provides an impressive cooling solution with a single fan setup that still manages to cool effectively, making it an excellent choice for those seeking good performance at a reasonable price. Its user-friendly installation and compatibility with various RAM heights add to its appeal.
How Do Air Coolers Compare in Performance for the 8700K?
| Air Cooler | Cooling Performance | Noise Levels | Price | TDP Compatibility | Dimensions (L x W x H) | Fan RPM Range |
|---|---|---|---|---|---|---|
| Cooler Master Hyper 212 | Efficient cooling for moderate overclocking, good thermal dissipation. | Moderate noise, generally quiet under load. | $40 – Budget-friendly option. | Up to 150W | 120 x 79 x 158 mm | 600 – 2000 RPM |
| Noctua NH-D15 | Excellent cooling performance, ideal for high overclocking. | Very quiet operation, even at high speeds. | $90 – Premium price for top performance. | Up to 250W | 160 x 150 x 165 mm | 300 – 1500 RPM |
| be quiet! Dark Rock Pro 4 | High cooling efficiency, great for sustained performance. | Quiet operation, designed for silent builds. | $85 – High-end pricing for premium features. | Up to 250W | 163 x 145 x 163 mm | 1000 – 1500 RPM |
What Are the Top Liquid Coolers Recommended for the 8700K?
When looking for the best liquid coolers for the Intel Core i7-8700K, there are several high-performing options that consistently receive positive reviews:
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Corsair H100i RGB Platinum: This 240mm AIO cooler combines excellent cooling performance with customizable RGB lighting. It features a dual-fan setup, providing efficient heat dissipation, and is known for low noise levels.
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NZXT Kraken X62: A 280mm AIO cooler, the Kraken X62 not only offers superior thermal performance but also comes with a unique RGB display that can show system metrics. Its custom-designed pumps ensure silent operation while maintaining efficient cooling.
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Deepcool Gammaxx L240 V2: This budget-friendly option doesn’t compromise on performance. It comes with RGB fans and a 240mm radiator, providing good cooling for the 8700K at a much more accessible price point.
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Thermalright Le Grand Macho RT: This air cooler, while not liquid, offers exceptional cooling capabilities. It’s ideal for those who prefer air cooling but want the thermal performance to match liquid solutions, making it a worthy contender.
Each of these coolers not only effectively manages the heat generated by the i7-8700K but also adds varying aesthetics to your build, catering to different preferences and budgets.
What Advantages Do Liquid Coolers Offer for the 8700K?
Liquid coolers offer several advantages for the Intel Core i7-8700K processor, enhancing its performance and longevity.
- Superior Cooling Performance: Liquid coolers generally provide better cooling performance compared to traditional air coolers, allowing the 8700K to maintain lower temperatures even under heavy loads. This is particularly beneficial for overclocking, as it helps prevent thermal throttling and ensures stable operation.
- Quieter Operation: Many liquid cooling systems operate more quietly than air coolers, as they can utilize larger radiators and fans that spin at lower RPMs. This results in a more pleasant computing environment, especially for gamers and content creators who prefer a quieter system.
- Aesthetic Appeal: Liquid coolers often come with customizable RGB lighting and sleek designs that can enhance the visual appeal of a PC build. This allows users to create a more personalized and visually striking gaming or workstation setup.
- Space Efficiency: Liquid coolers can be more space-efficient, as they do not require large heat sinks that can obstruct other components. This is particularly advantageous in compact builds where airflow and space management are crucial.
- Heat Distribution: Liquid cooling systems distribute heat more evenly across the components, which can lead to improved thermal management. This results in better overall system performance as heat hotspots are minimized.
How Do Different Cooling Solutions Affect the 8700K’s Performance?
Different cooling solutions can significantly impact the performance and thermal management of the Intel 8700K CPU.
- Air Coolers: Air coolers use large heatsinks and fans to dissipate heat from the CPU. They are generally easier to install and maintain, and high-end models can provide excellent cooling performance, often sufficient for overclocking the 8700K without noise levels becoming intrusive.
- All-in-One (AIO) Liquid Coolers: AIO liquid coolers consist of a pump, radiator, and fans, providing superior cooling performance compared to air coolers. They can handle higher thermal loads, making them ideal for overclocking, and typically run quieter, as the fans can be lower speed while maintaining effective cooling.
- Custom Liquid Cooling Loops: Custom liquid cooling solutions are built with individual components, offering the best thermal performance and aesthetic flexibility. They allow for more advanced setups that can cool multiple components, but they require more time and expertise to install and maintain, and they can be more expensive than other options.
- Passive Cooling Solutions: Passive cooling relies on heatsinks without fans to dissipate heat, relying on natural convection. While they are silent, they are generally less effective for high-performance CPUs like the 8700K, especially under heavy loads or overclocking scenarios, and are not recommended for most users.
- Thermal Paste: The quality and application of thermal paste can significantly affect the efficiency of any cooling solution. High-quality thermal compounds can improve thermal conductivity between the CPU and cooler, leading to lower temperatures and better performance, while improper application can hinder cooling efficiency.
What Is the Price Range for High-Quality 8700K CPU Coolers?
According to a report by Cooler Master, high-performance CPU coolers can reduce temperatures by 20-30 degrees Celsius compared to stock coolers, which is significant for maintaining system stability and performance under load. This is particularly important for the Intel Core i7-8700K, known for its overclocking capabilities, where adequate cooling is essential to achieve higher clock speeds without overheating.
Best practices in selecting an 8700K cooler involve considering factors such as thermal performance, noise levels, and user reviews, alongside ensuring compatibility with the existing hardware. It’s advisable to look for coolers with good warranty policies and customer support, as well as to consider installation complexity to avoid any potential issues during setup. Additionally, users should evaluate their cooling needs based on their usage scenarios, which can help in making an informed decision on which cooler provides the best value for their investment.
What Do Customer Reviews Reveal About the Best 8700K CPU Coolers?
Customer reviews provide valuable insights into the performance and reliability of the best 8700K CPU coolers.
- Noctua NH-D15: This air cooler is frequently praised for its exceptional cooling performance and low noise levels.
- Corsair H115i RGB Platinum: Customers often highlight its efficient cooling capabilities and customizable RGB lighting.
be quiet! Dark Rock Pro 4: Reviewers commend its silent operation and aesthetic design, making it a favorite among enthusiasts. - Cooler Master Hyper 212 EVO: This budget-friendly option is lauded for its value, offering solid cooling performance for its price.
- NZXT Kraken X62: Users appreciate its sleek design and effective cooling, along with the convenience of an all-in-one liquid cooler.
The Noctua NH-D15 is considered a top-tier air cooler, renowned for its dual tower design and powerful fans that effectively dissipate heat without generating much noise. Its compatibility with a wide range of cases and motherboards makes it a versatile choice for gamers and content creators alike.
Corsair H115i RGB Platinum stands out in customer reviews for its performance and aesthetics. The 280mm radiator allows for excellent thermal management, while the RGB lighting adds a visually appealing touch to any build, making it popular among gamers who value both looks and functionality.
be quiet! Dark Rock Pro 4 is highly regarded for its whisper-quiet operation, which is a significant advantage for users seeking a low-noise computing environment. Its premium build quality and efficient airflow design also contribute to its ability to maintain optimal CPU temperatures even under heavy loads.
The Cooler Master Hyper 212 EVO remains a popular choice due to its affordability and reliable cooling capabilities. Customers appreciate that it provides decent performance without breaking the bank, making it a go-to option for budget-conscious builders who still want effective cooling for their 8700K CPUs.
NZXT Kraken X62 is favored for its sleek aesthetics, featuring an elegant design that integrates seamlessly with modern setups. Users highlight its performance, particularly in overclocked scenarios, and the ease of installation that comes with an all-in-one liquid cooling solution, making it suitable for both novice and experienced builders.
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