6 Best CPU Coolers Under $100, Compared

Quick picks

The best fit for you

• You need a low profile cooler for tight cases Thermaltake 92mm Triple Heatpipe CPU Cooler Its 0.98 inch height and slim 92mm PWM fan fit extremely tight enclosures.
• You build a 2U LGA1155 or LGA1156 server Supermicro 2U Server CPU Cooler It matches 2U chassis specifications and features a dedicated 2800 RPM cooling fan.
• You require dual tower cooling with tall memory clearance Noctua Asymmetric Dual-Tower 140mm CPU Cooler The offset dual tower heatsink pairs six heatpipes with a 140mm PWM fan.
• You need active cooling for an LGA2011 server Supermicro 4U Active CPU Cooler It provides copper heat pipes and dual ILM bracket support for 4U systems.

Our 6 picks

1 Best overall

Thermaltake 92mm Triple Heatpipe CPU Cooler

Best for: compact builds needing 92mm PWM cooling

Heat Pipes

3

Fan Size

92mm

Features

Fan

Dimensions

3.62 × 3.62 × 0.98 inches

Weight

1.05 pounds

View on Amazon: Thermaltake 92mm Triple Heatpipe CPU Cooler (paid link)

This CPU cooler gives you a side-flow cooling setup built around three heatpipes and a copper and aluminum base. It uses a slim 92mm PWM fan equipped with a hydro dynamic bearing to manage airflow. Two heatsink modules feature sawtooth fins designed to guide air intake. This cooler suits you if you need a compact 1.05-pound heatsink for a build requiring quiet 4-pin PWM speed regulation.

Pros

• Three heatpipes with copper and aluminum base
• Slim 92mm PWM fan with Hydro Dynamic Bearing
• Dual heatsink modules with sawtooth fin edges
• 4-pin PWM connection for automatic fan control

Cons

• CPU socket compatibility is omitted from published specs
• Compact 92mm fan diameter limits total airflow capacity

Good fit if

• You want a heatsink with three heatpipes and a copper-aluminum base.
• You need a 92mm PWM fan with a hydro dynamic bearing.

Skip if

• You need confirmed socket mounting specifications before buying.
• You prefer a full-sized 120mm or dual-tower cooler.

Verdict: Thermaltake 92mm Triple Heatpipe CPU Cooler combines a copper and aluminum base with three heatpipes and dual sawtooth fin modules. It provides controlled airflow via a slim 92mm PWM hydro dynamic bearing fan.

2 Best premium

Supermicro 2U Server CPU Cooler

Best for: 2U LGA1155 and LGA1156 server setups

Socket Compatibility

LGA1156, LGA1155

Fan Speed

2800 RPM

Server Height

2U

Cooling Method

Passive

Dimensions

3.6 × 3.6 × 3.6 inches

Weight

1 pounds

View on Amazon: Supermicro 2U Server CPU Cooler (paid link)

The Supermicro 2U Server CPU Cooler is a compact cooling solution designed for 2U UP servers and workstations. It features dimensions of 3.6 by 3.6 by 3.6 inches and operates with a 2800 RPM fan generating 33.5 dBA of noise. It attaches via push-in pins and supports LGA1156 and LGA1155 sockets. This cooler suits you if you maintain legacy server hardware or compact workstations with compatible Xeon 3400 or Core series processors.

Pros

• Operates at up to 2800 RPM fan speed
• Compact 3.6 x 3.6 x 3.6-inch footprint fits 2U server chassis
• Push-in pin mounting method for installation
• Supports LGA1155 and LGA1156 sockets for Xeon 3400 and Core series CPUs

Cons

• Socket compatibility is limited to LGA1156 and LGA1155
• Noise level reaches 33.5 dBA during operation

Good fit if

• You need a dedicated cooler for a 2U UP server or workstation chassis.
• You run an Intel LGA1155 or LGA1156 socket processor such as a Xeon 3400 or Core series chip.
• You prefer push-in pin mounting hardware.

Skip if

• You use modern CPU sockets outside of LGA1155 and LGA1156.
• You require an ultra-quiet cooler that operates below 33.5 dBA.

Verdict: Supermicro 2U Server CPU Cooler provides dedicated thermal management for 2U systems using LGA1155 and LGA1156 sockets. Its 2800 RPM fan and push-pin mounting design make it a direct match for compatible rackmount and workstation hardware.

3 Best active

Supermicro 4U Active CPU Cooler

Best for: LGA2011 Xeon 4U server builds

Socket Compatibility

LGA2011

Cooling Method

Active

Dimensions

3.6 × 5 × 4.2 inches

Weight

1 pounds

View on Amazon: Supermicro 4U Active CPU Cooler (paid link)

This is an active server heatsink designed for 4U chassis systems. It fits Intel LGA2011 sockets and supports Intel Xeon E5-2600 series processors. The unit measures 4.2 inches high, 5 inches wide, and 3.6 inches long, weighing 1 pound. It features a copper base, heat pipes, aluminum fins, and a front-side cooling fan. You also get mounting brackets for square and narrow ILM configurations. It suits your rackmount server build requiring dedicated Xeon socket hardware.

Pros

• Includes brackets for both Square and Narrow ILMs
• Copper base paired with aluminum fins and heat pipes
• Front-side cooling fan provides active airflow
• Compact 4.2-inch height fits 4U server chassis

Cons

• Limited to Intel LGA2011 socket platforms
• Compatible only with Intel Xeon E5-2600 series processors

Good fit if

• You run an Intel Xeon E5-2600 processor on an LGA2011 board.
• You need a 4.2-inch tall active cooler for a 4U server chassis.
• You require mounting hardware for square or narrow ILM sockets.

Skip if

• You use desktop consumer sockets rather than LGA2011.
• You build in a 1U, 2U, or 3U rackmount enclosure.

Verdict: Supermicro 4U Active CPU Cooler delivers active cooling for Intel Xeon E5-2600 processors on LGA2011 server motherboards. It provides copper heat pipes and dual ILM bracket support for 4U rackmount systems.

4 Also great

Noctua 92mm Dual-Tower CPU Cooler

Best for: compact ITX and 3U rack builds

Socket Compatibility

LGA1851/1700/1200/115x, AM5/AM4

Cooler Height

110mm

Tower Design

Dual-Tower

Fan Size

92mm

Dimensions

3.74 × 3.74 × 4.33 inches

Weight

1 pounds

View on Amazon: Noctua 92mm Dual-Tower CPU Cooler (paid link)

This Noctua 92mm Dual-Tower CPU Cooler delivers cooling in a compact 110mm height. It features a dual-tower heatsink paired with a 92mm PWM fan, keeping clearance open over your RAM and PCIe slots. The package includes NT-H1 thermal paste, a low-noise adaptor, and mounting hardware for Intel and AMD sockets. If you build inside small form factor, ITX, or 3U rack cases, this setup gives you balanced clearance and airflow.

Pros

• Compact 110mm height fits 3U, ITX, and small form factor enclosures
• Dual-tower design avoids overhanging motherboard RAM and PCIe slots
• Includes NF-A9 92mm PWM fan with Low-Noise Adaptor
• Bundled with NT-H1 thermal paste and SecuFirm2 mounting system
• Supported by a 6-year manufacturer warranty

Cons

• Uses a 92mm fan instead of larger 120mm or 140mm fans
• Offered only in brown styling

Good fit if

• You need a dual-tower cooler that fits chassis clearance limits down to 110mm.
• You require unrestricted access to your RAM modules and primary PCIe slot.
• You run mainstream Intel LGA1851/1700/1200/115x or AMD AM5/AM4 sockets.

Skip if

• You have clearance to mount larger 120mm or 140mm tower heatsinks.
• You need a black or white cooler to match your build's color scheme.

Verdict: Noctua 92mm Dual-Tower CPU Cooler provides dual-heatsink cooling efficiency within a tight 110mm height profile. It ensures zero interference with memory slots and PCIe lanes across supported Intel and AMD platforms.

5 Also great

Noctua Asymmetric Dual-Tower 140mm CPU Cooler

Best for: dual-tower cooling with tall RAM clearance

Heat Pipes

6

Tower Design

Dual-Tower

Fan Size

140mm

Dimensions

5.32 × 5.91 × 6.3 inches

Weight

2.5 pounds

View on Amazon: Noctua Asymmetric Dual-Tower 140mm CPU Cooler (paid link)

This is a dual-tower CPU cooler equipped with six heatpipes and a single 140mm PWM fan. It measures 6.3 inches tall, 5.91 inches wide, and weighs 2.5 pounds. The asymmetric layout provides clearance for RAM modules and PCIe slots on your motherboard. Noctua bundles NT-H1 thermal paste and hardware for Intel LGA1851, LGA1700, LGA1200, and AMD AM5 or AM4 sockets. It fits you if you need high-capacity dual-tower cooling with broad clearance.

Pros

• Six heatpipes paired with a dual-tower fin layout
• Asymmetric build provides clearance for RAM and top PCIe slots
• Bundled 140mm PWM fan includes a Low-Noise Adaptor
• Includes NT-H1 thermal paste and SecuFirm2 mounting gear
• Covered by a 6-year manufacturer warranty

Cons

• Requires 6.3 inches of vertical clearance inside your case
• Total assembly weight reaches 2.5 pounds
• Comes with a single fan rather than two

Good fit if

• You need a dual-tower heatsink shaped to clear tall RAM and top PCIe slots.
• You run a supported Intel LGA1851/1700/1200/115x or AMD AM5/AM4 socket.
• You have a PC chassis with at least 6.3 inches of cooler clearance.

Skip if

• You use a compact PC chassis with under 6.3 inches of cooler height allowance.
• You require a dual-tower setup that includes two fans in the box.

Verdict: Noctua Asymmetric Dual-Tower 140mm CPU Cooler delivers dual-tower thermal volume with an offset layout designed for component clearance. It pairs six heatpipes with a 140mm PWM fan and a 6-year warranty.

6 Also great

Noctua 120mm Black Tower CPU Cooler

Best for: standard mid-tower builds needing full RAM clearance

Socket Compatibility

LGA1851/1700/1200/115x, AM5, AM4

Cooler Height

158mm

Tower Design

Tower

Fan Size

120mm

Color

Black

Dimensions

6.22 × 4.92 × 2.8 inches

View on Amazon: Noctua 120mm Black Tower CPU Cooler (paid link)

This is a slim 120mm tower CPU cooler finished in all black. It stands 158mm tall, clearing most standard tower cases without overhanging your RAM slots or blocking PCIe slots on typical ATX and Micro-ATX motherboards. It includes a 120mm PWM fan, a low-noise adapter, and NT-H1 thermal paste. It suits you if you need a mid-sized single-tower cooler for current Intel LGA1851/1700 or AMD AM4/AM5 builds.

Pros

• Slim design prevents RAM slot overhang and PCIe blockage
• 158mm height fits standard tower chassis
• Includes NF-F12 120mm PWM fan with low-noise adapter
• Packaged with NT-H1 thermal paste and SecuFirm2 mounting kit
• Backed by a 6-year manufacturer warranty

Cons

• 158mm height will not fit slim or small-form-factor cases
• Includes only one cooling fan out of the box

Good fit if

• You need full RAM clearance without tall heatsinks blocking memory slots.
• You use an Intel LGA1851/1700/1200/115x or AMD AM5/AM4 processor.
• You want an all-black single-tower cooler that fits cases with 158mm clearance.

Skip if

• You have a compact case with less than 158mm cooler clearance.
• You require an out-of-the-box dual-fan configuration.

Verdict: Noctua 120mm Black Tower CPU Cooler delivers reliable single-tower cooling with zero RAM overhang and broad socket compatibility. It gives you a clean all-black build without crowding your motherboard slots.

Specifications side by side

Cooler Feature Trade-Offs Under $100

Coolers Under $100 focus on functional cooling specs rather than visual extras. Across these models, you get no integrated lighting systems. Color options remain narrow, with published specifications showing only black or brown where specified. Hardware layouts remain specialized rather than universal. Server models restrict socket compatibility directly to platforms like LGA1155, LGA1156, or LGA2011. Desktop designs balance heat pipe counts between three and six, while fan sizes mostly cap at 92mm or 120mm, leaving large 140mm configurations rare across the listed options.

• Zero integrated lighting hardware across listed models
• Color specifications limited strictly to black or brown
• Socket compatibility on server models limited to LGA1155, LGA1156, or LGA2011
• Fan size options concentrated primarily on 92mm and 120mm diameters

How We Picked These Coolers

This guide covers CPU coolers listed Under $100 to help you evaluate your options. You see only one size or variant per product family to keep choices simple. Every detail comes directly from published specifications and feature lists. Products are not physically handled or tested.

You will find products in stock first on this page. Listings update at least daily to reflect current availability. Hardware can move into or out of this guide as listing terms shift over time. This keeps your spec comparisons focused on gear you can actually purchase today.

How to Choose the Best CPU Cooler

1. Choose Your Tower Design

   Compare single-tower and dual-tower layouts based on your cooling demands and enclosure space. Dual-tower configurations offer expanded heatsink volume to dissipate processor heat across separate fin stacks. Single-tower options remain slimmer to avoid crowding motherboard components. If you pick a larger dual-tower model, look for an offset layout to keep your memory slots accessible. For example, the Noctua Asymmetric Dual-Tower 140mm CPU Cooler uses an asymmetric structure to preserve tall RAM clearance while delivering dual-tower volume.

2. Count the Heat Pipes

   Check the number of heat pipes running through the base of the cooler. Heat pipes transfer thermal energy directly from your processor base into the heatsink fins. Light-duty or low-profile designs often rely on three heat pipes to handle moderate heat outputs within tight constraints. More demanding setups benefit from six heat pipes to distribute thermal energy faster across larger surfaces. For compact builds, the Thermaltake 92mm Triple Heatpipe CPU Cooler uses three heat pipes along with a copper and aluminum base to manage heat.

3. Evaluate Fan Size and RPM

   Examine fan dimensions and operating speeds before buying. Larger fans, such as 140mm units, move substantial airflow across heatsink fins while spinning at moderate speeds. Smaller fans, including 92mm options, fit restricted enclosures but may need higher operational speeds to maintain airflow. In server hardware, compact designs often employ high-speed fans to pull air through dense chassis channels. If you configure a rackmount build, the Supermicro 2U Server CPU Cooler provides a dedicated 2800 RPM fan to ensure sufficient airflow across your motherboard.

4. Verify Server Mounting Hardware

   Check the mounting bracket design when selecting hardware for enterprise or rackmount systems. Server processors often require specialized retention mechanisms rather than typical desktop clips. For instance, Intel Xeon E5-2600 platforms utilize specific socket designs that require matching mounting plates. Verifying ILM bracket compatibility ensures the heatsink mounts securely and maintains even contact pressure across the integrated heat spreader. The Supermicro 4U Active CPU Cooler includes dual ILM bracket support specifically designed for LGA2011 server motherboards in 4U enclosures.

5. Check Component Interference Clearances

   Review the cooler dimensions to confirm that the heatsink and fan do not block neighboring slots. On compact motherboards, heatsinks can extend over memory sockets or interfere with the primary PCIe slot. You need a design engineered to remain clear of RAM modules if you plan to use all memory channels. A cooler with zero memory interference allows you to install or replace modules without removing the heatsink. The Noctua 92mm Dual-Tower CPU Cooler prevents interference with memory slots and PCIe lanes across supported boards.

6. Consider Total Cooler Weight

   Check the total weight of the cooler against your motherboard mounting standards. Cooler weights in this category range from 1 pound to 2.5 pounds. Lighter coolers put minimal physical stress on the circuit board during transit and installation. Heavy dual-tower coolers require sturdy backplates to distribute their mass safely across the socket area. If you want a full-size tower that balances cooling mass with standard retention requirements, the Noctua 120mm Black Tower CPU Cooler weighs 1.28 pounds while delivering single-tower cooling.

Frequently asked questions

See also

• CPU cooler under 30
• CPU cooler under 50
• motherboard under 100
• deadbolt under 100