critical cactusThermaltake Gravity i2 CPU Cooler is our top choice for the Best i7-8700K Fans because it balances efficient aluminum extrusion cooling with a quiet 92mm PWM fan design.
Selecting a cooling solution for this specific processor requires careful consideration of thermal headroom and motherboard clearance. Since the i7-8700K generates significant heat under load, prioritizing a cooler with reliable PWM control ensures the fan speed adjusts dynamically to your workload, keeping noise levels manageable during light tasks while ramping up when you need maximum performance.
Installation ease and physical dimensions are equally important for a seamless build. Choosing a cooler that utilizes standard mounting clips for LGA 1151 sockets allows for a straightforward setup without requiring specialized tools or complex backplate modifications.
If you are exploring broader options for your system, our guide on Best i7 CPU Fans provides additional context on cooling compatibility across various Intel generations. For those specifically looking for metal-based cooling, our Best i7 Fan Heatsinks article details the differences between various material compositions.
4 Best i7-8700K Fans in 2026 Reviews
Quick Comparison
| Product | Best For | Key Strength | Score |
|---|---|---|---|
| Thermaltake Gravity i2 CPU Cooler | Best Overall | 4-Pins PWM connector for automated fan speed control. | 4.9 |
| LPLMOOM Copper Core CPU Cooler | Efficient heat dissipation design | Premium copper core base for efficient heat conduction. | 4.6 |
| Intel LGA115x CPU Cooler | Standard OEM replacement fan | Standard OEM compatibility for Intel i3/i5/i7 LGA115x processors. | 4.5 |
| QUETTERLEE LGA115x CPU Cooler | Reliable socket-compatible cooling | Direct socket compatibility for Intel LGA 1150, 1151, 1155, and 1156. | 4.6 |
How We Chose
When evaluating cooling solutions for the i7-8700K, we focus on practical performance metrics that ensure system stability. An experienced reviewer separates effective coolers from basic replacements by analyzing heat sink material composition, the responsiveness of the PWM fan control, and the physical footprint to ensure compatibility with standard desktop chassis configurations.
- Thermal dissipation efficiency using aluminum or copper materials
- PWM fan control precision for automated speed adjustment
- Socket compatibility specifically for LGA 1151 and related standards
- Physical clearance and low-profile design constraints
- Ease of installation and mounting mechanism reliability
1 Thermaltake Gravity i2 CPU Cooler — Quiet PWM cooling performance
The Thermaltake Gravity i2 CPU Cooler is engineered to provide a reliable air-cooling solution for Intel processors, utilizing a specialized aluminum extrusion design to manage thermal output effectively. This cooler is specifically built for Intel LGA 1200, 1156, 1155, 1150, and 1151 sockets, making it a focused component for standard Intel Core i7, i5, and i3 configurations where a compact footprint is required.
At the core of its performance is a 7-bladed 92mm fan that is designed to balance airflow with low-noise operation. The unit features a 4-Pins PWM connector, which allows the motherboard to dynamically adjust fan speeds based on real-time CPU thermal demands. This automated scaling ensures that the system maintains appropriate cooling levels without unnecessary noise during lighter workloads.
The Gravity i2 is defined by its low-profile build, measuring approximately 3.7 inches in height. This compact form factor simplifies installation in space-constrained PC cases where larger tower coolers might not fit. The unit is designed for straightforward mounting, intended to provide a functional alternative for users who do not require the complex hardware associated with high-end liquid cooling systems.
While the cooler offers a practical, lightweight design backed by a 3-year parts warranty, it is important to note its functional trade-offs. Because it relies on a standard aluminum extrusion heatsink, it is best suited for standard thermal management rather than extreme overclocking scenarios. Furthermore, its compatibility is strictly limited to the specified Intel platforms, meaning it cannot be used with AMD-based systems.
Best for: Users requiring a compact, PWM-controlled air cooling solution for Intel LGA 1200/115x socket processors.
Skip if: Users with high-TDP processors requiring liquid cooling or those needing clearance for specialized, oversized memory modules.
- 4-Pins PWM connector for automated fan speed control.
- Low-profile design suitable for compact system builds.
- Broad compatibility with multiple Intel LGA socket types.
- Quick and easy installation process.
- Limited to Intel platforms, excluding AMD compatibility.
- Standard aluminum extrusion may not be sufficient for extreme overclocking scenarios.
2 LPLMOOM Copper Core CPU Cooler — Efficient heat dissipation design
Maintaining stable thermal conditions for your processor requires a reliable cooling solution that balances heat conduction with consistent airflow. The LPLMOOM Copper Core CPU Cooler is engineered with a premium copper core base designed to facilitate rapid heat transfer away from the CPU, paired with a dense aluminum heatsink to dissipate thermal energy effectively.
This cooler is built for broad compatibility, specifically fitting Intel Core i3, i5, and i7 processors across LGA 1200, 1151, 1150, 1155, and 1156 sockets. Its tool-free installation system utilizes pre-installed mounting clips, allowing for a straightforward attachment process without the need for additional hardware, which simplifies the assembly or upgrade of your desktop system.
For precise thermal management, the unit includes a 92mm fan with 4-pin PWM control. This feature allows the motherboard to automatically adjust fan speeds based on real-time CPU temperatures, helping to maintain an equilibrium between cooling performance and noise levels. The fan operates on a 12V DC power supply via an 8-inch cable.
Designed for immediate deployment, the cooler comes with pre-applied thermal paste, removing the necessity for manual application during installation. This design choice ensures that the interface between the processor and the heatsink is ready for use right out of the box, providing a convenient solution for maintaining stable operation for CPUs up to 65W.
Best for: Users seeking a straightforward, tool-free cooling replacement for Intel LGA 115X/1200 desktop systems with a 65W TDP.
Skip if: Users requiring high-performance cooling for overclocked processors or CPUs with a TDP exceeding 65W.
- Premium copper core base for efficient heat conduction.
- Tool-free installation with pre-installed mounting clips.
- 4-pin PWM fan control for automated speed adjustment.
- Pre-applied thermal paste for immediate setup.
- Limited to 65W TDP processors.
- Specific socket compatibility only (LGA 1200/115X).
3 Intel LGA115x CPU Cooler — Standard OEM replacement fan
Maintaining stable thermal conditions for an Intel processor requires a reliable cooling solution that integrates seamlessly with existing hardware. The Intel i3/i5/i7 LGA115x CPU Heatsink and Fan E97379-003 serves as a standard OEM replacement designed to manage heat dissipation for desktop systems utilizing the LGA115x socket architecture.
This unit features a compact heat sink with fan design, measuring 11.94 x 10.41 x 7.11 cm. It utilizes a standard 4-pin fan connector, ensuring compatibility with motherboard headers that support pulse-width modulation for fan speed control. With a total weight of 181.44 grams, it provides a lightweight cooling option that does not place excessive strain on the motherboard mounting points.
Engineered specifically for Intel i3, i5, and i7 processors, this cooler is intended for users seeking a direct replacement for a failed or aging stock fan. The design focuses on straightforward installation and reliable operation within standard desktop chassis environments. It is a functional, no-frills component that prioritizes compatibility with the specified Intel socket series.
When selecting a cooling solution, verify the physical clearance within your computer case and ensure your motherboard utilizes the LGA115x socket configuration. This model is best suited for users who require a factory-standard replacement rather than those pursuing high-performance overclocking or specialized thermal management setups.
Best for: Users needing a direct, standard OEM replacement for a stock Intel LGA115x CPU cooler.
Skip if: Users performing high-end overclocking or those requiring specialized, high-performance thermal cooling solutions.
- Standard OEM compatibility for Intel i3/i5/i7 LGA115x processors.
- Includes a 4-pin fan connector for motherboard-controlled speed regulation.
- Lightweight design minimizes stress on the motherboard.
- Basic cooling performance limited to standard stock requirements.
- Not suitable for high-heat scenarios or extreme overclocking.
4 QUETTERLEE LGA115x CPU Cooler — Reliable socket-compatible cooling
Maintaining stable thermal conditions for your processor is essential for longevity, and the QUETTERLEE LGA115x CPU Cooler provides a direct, socket-compatible solution for Intel systems. Designed specifically for the LGA 115x, 1150, 1151, 1155, and 1156 series, this unit serves as a functional replacement for aging or malfunctioning stock cooling hardware.
This 4-PIN 3.5-Inch Fan assembly operates at 12V 0.60A, ensuring it meets the standard power requirements for compatible Intel desktop motherboards. The unit integrates a dedicated heatsink to facilitate heat dissipation, utilizing a standard mounting interface that aligns with the specified Intel socket architectures. By utilizing the 4-PIN connector, the fan supports pulse-width modulation (PWM) for motherboard-controlled speed adjustments, allowing the system to manage airflow based on real-time temperature data from the processor.
Installation is straightforward for those familiar with standard CPU cooler retention mechanisms. Because this unit is designed as a direct replacement for standard hardware, it offers a practical fit for users maintaining stock configurations. However, it is important to note that this cooler is intended for standard thermal management; users should ensure their motherboard headers are compatible with the 4-PIN configuration to utilize the integrated speed control features effectively.
While this cooler is a reliable choice for maintaining stock thermal performance, it is not engineered for high-thermal-output scenarios. The trade-off for its compact, socket-specific design is a limitation in cooling capacity compared to larger, aftermarket heatsinks. Consequently, users seeking to perform heavy overclocking or manage extreme thermal loads will require a more robust heatsink solution, as this unit is optimized for standard operation within the specified Intel socket architectures.
Best for: Users needing a direct, socket-compatible replacement for a standard Intel LGA 115x stock CPU cooler.
Skip if: Users seeking high-performance aftermarket cooling for heavy overclocking or extreme thermal loads will require a more robust heatsink solution.
- Direct socket compatibility for Intel LGA 1150, 1151, 1155, and 1156.
- 4-PIN PWM support for automated fan speed control.
- Integrated heatsink design for efficient thermal dissipation.
- Standardized 12V 0.60A power draw.
- Not designed for overclocking or high-thermal-output scenarios.
- Limited to specific Intel LGA 115x socket architectures.
Best i7-8700K Fans Buying Guide
Thermal Management Essentials
The i7-8700K is a high-performance processor that demands consistent heat dissipation to maintain its boost clocks. A cooler with a dense aluminum heatsink provides the surface area necessary to draw heat away from the integrated heat spreader efficiently.
Copper core inserts, found in some high-efficiency models, offer superior thermal conductivity compared to pure aluminum. This material choice helps bridge the gap between the CPU and the cooling fins, facilitating faster heat transfer during intensive computing sessions.
PWM Fan Control Explained
Pulse Width Modulation (PWM) is a critical feature for modern CPU fans, allowing the motherboard to regulate fan speed based on real-time temperature data. This ensures the fan operates at lower, quieter speeds during idle periods and increases airflow only when the CPU load spikes.
A 4-pin connector is the standard for PWM functionality. When shopping for a replacement, verifying this connection type is essential to ensure your motherboard can communicate with the fan and manage its RPM effectively.
Socket Compatibility and Fitment
The i7-8700K utilizes the LGA 1151 socket. While many coolers are marketed for a range of sockets, it is vital to confirm that your specific choice explicitly lists LGA 1151 compatibility to ensure the mounting holes align perfectly with your motherboard.
Low-profile designs are often preferred for standard desktop builds where space around the CPU socket is limited by RAM modules or VRM heatsinks. Checking the height and width of the cooler prevents potential interference with other internal components.
Installation and Maintenance
Tool-free mounting systems significantly simplify the installation process, especially for users who prefer not to remove the motherboard from the chassis. Pre-installed clips or secure locking mechanisms allow for a firm attachment that maintains optimal contact pressure.
Some coolers come with thermal paste pre-applied to the base. This saves time and ensures the correct amount of compound is used, though users should always ensure the surface is clean before mounting to achieve the best thermal results.
Noise Level Considerations
Fan blade design plays a major role in the acoustic profile of a CPU cooler. A 7-bladed 92mm fan is often engineered to move a high volume of air while minimizing turbulence, which helps keep the overall system noise floor low.
While performance is the primary goal, a balanced fan profile prevents the high-pitched whine often associated with smaller, lower-quality fans. Prioritizing models that emphasize quiet operation ensures a more comfortable working environment.
Frequently Asked Questions
Will these fans fit my LGA 1151 motherboard?
Yes, the models listed are compatible with the LGA 1151 socket used by the i7-8700K, provided they are installed according to the manufacturer's instructions.
Do I need to apply thermal paste myself?
Many of these coolers come with thermal paste pre-applied. If your specific model does not, you will need to apply a small, pea-sized amount to the center of the CPU before attaching the cooler.
What is the benefit of a 4-pin PWM connector?
A 4-pin PWM connector allows your motherboard to automatically adjust the fan speed based on the CPU temperature, which helps balance cooling performance and noise levels.
Can these fans handle overclocking?
These coolers are generally designed as standard replacements for stock performance. While they provide stable cooling for stock operation, heavy overclocking may require a more robust aftermarket cooling solution.
How do I know if the cooler is too tall for my case?
Check the height dimensions provided in the product specifications and compare them to the clearance available in your PC case, measuring from the motherboard surface to the side panel.
Conclusion: Our Top Pick
Our top pick is Thermaltake Gravity i2 CPU Cooler. Choosing the right cooling solution for your i7-8700K is a straightforward process when you prioritize thermal efficiency and socket compatibility. By focusing on PWM-enabled fans and ensuring your chosen model fits your specific motherboard layout, you can maintain system stability and keep noise levels in check.
Whether you opt for a standard aluminum extrusion design or a performance-oriented copper core model, these cooling solutions provide the reliable heat dissipation necessary for daily computing. Always verify your case clearance to ensure a successful installation.