Best 2U CPU Coolers: 15 Spec-Based Picks
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
Finding the right 2U CPU cooler requires matching your rack chassis height with your processor socket and thermal workload. The Supermicro 2U Server CPU Cooler takes the top spot because its 2800 RPM cooling and 3.6-inch dimensions deliver focused thermal control for legacy Intel rack builds.
We compared 15 models strictly using the specifications published on their listings. This guide helps you decide which cooling unit fits your server socket, chassis clearance, and airflow requirements.
Quick picks
The best fit for you
- You maintain legacy Intel LGA1155 or LGA1156 2U servers Supermicro 2U Server CPU Cooler The 3.6-inch profile and 2800 RPM specification match legacy single-socket 2U Intel enclosures.
- You deploy high-wattage 400W AMD Epyc SP5 rackmount servers SilverStone 2U Socket SP5 CPU Cooler The design dissipates up to 400W TDP within a 2.52-inch height profile.
- You run Intel LGA 1700 servers needing vapor chambers Coolerguys 2U LGA 1700 Vapor Chamber Cooler Its vapor chamber design pairs with an 8,000 RPM fan under 2.58 inches tall.
- You require ultra-low profile cooling for low-wattage LGA1700 builds HIGH Power 28mm Low-Profile LGA1700 Cooler The 1.1-inch height fits restricted 2U chassis supporting processors up to 75W.
Our 15 picks
Supermicro 2U Server CPU Cooler
Best for: legacy 2U Intel LGA1155 and LGA1156 servers
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- LGA1156, LGA1155
- Fan Speed
- 2800 RPM
- Cooling Method
- Passive
- Dimensions
- 3.6 × 3.6 × 3.6 inches
- Weight
- 1 pounds
This Supermicro cooler is designed for 2U uniprocessor servers and workstations running Intel LGA1155 and LGA1156 sockets. You get a compact profile measuring 3.6 by 3.6 by 3.6 inches and a weight of one pound. Its fan operates at up to 2800 RPM while producing 33.5 dBA of acoustic noise. It suits you if you need straightforward push-in pin mounting for legacy Xeon 3400 or Core series hardware.
Pros
- Fits standard 2U uniprocessor server and workstation chassis
- 2800 RPM fan speed with 33.5 dBA noise rating
- Push-in pin mounting method for straightforward installation
- Compatible with Intel Xeon 3400 and Core i3/i5/i7 processors
Cons
- Socket support limited strictly to LGA1155 and LGA1156
- Not compatible with multi-processor server boards
Good fit if
- You deploy a 2U uniprocessor server with an LGA1155 or LGA1156 socket.
- You run an Intel Xeon 3400 or compatible Core series processor.
- You require push-in pin mounting for quick hardware installation.
Skip if
- You run newer sockets like LGA1700, LGA4677, or AMD platforms.
- You require cooling for dual-socket or multi-CPU server motherboards.
Verdict: Supermicro 2U LGA1155/1156 Server CPU Cooler provides dedicated 2800 RPM cooling tailored specifically for single-socket Intel rack builds. Its push-in pin mounting and compact 3.6-inch profile make maintenance straightforward in supported 2U enclosures.
Dynatron 2U Active Server CPU Cooler
Best for: 2U LGA 1200 and LGA 115X servers
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- LGA 115X, LGA 1200
- Cooling Method
- Active
- Material
- Copper, Aluminum
- Dimensions
- 6 × 6 × 6 inches
This Dynatron active air cooler is designed for 2U rackmount chassis running Intel LGA 1200 or LGA 115X sockets. It measures 94.0 by 87.5 by 67.7 millimeters to fit standard 2U vertical clearance. The unit combines a copper base, embedded heat pipes, and aluminum fins with a dual ball-bearing fan. It suits you if you need active thermal dissipation for compatible Intel desktop-class processors in dense server enclosures.
Pros
- Fits 2U server chassis height and taller
- Compatible with Intel LGA 1200 and LGA 115X sockets
- Copper base with embedded aluminum heat pipes
- Dual ball-bearing cooling fan
Cons
- Socket support limited to LGA 115X and LGA 1200
- Does not support AMD or LGA 1700 platforms
Good fit if
- You run a 2U or taller server rack chassis.
- You use an Intel LGA 1200 or LGA 115X motherboard.
- You require active cooling with dual ball bearings.
Skip if
- You use an Intel LGA 1700 or AMD processor.
- You need a cooler for a 1U chassis.
Verdict: Dynatron 2U Active Copper Base Cooler delivers direct active cooling for 2U servers running Intel LGA 1200 or LGA 115X hardware. Its copper base and dual ball-bearing assembly offer a tailored fit for these specific Intel sockets.
Dynatron 2U Active Server Cooler
Best for: 125W Intel LGA 1700 2U server builds
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- LGA1700
- TDP Rating
- 125 Watts
- System Type
- Server
- Cooling Method
- Active
- Dimensions
- 5 × 5 × 5 inches
The Dynatron 2U Active LGA1700 Cooler is an active server heatsink designed for 2U chassis. It fits Intel Socket LGA 1700 processors with thermal output up to 125 watts. Its build combines an aluminum fin stack, direct-contact heat pipes, and a copper base. A 4-pin PWM dual ball bearing fan handles active airflow. You will find it suited for standard Intel server builds needing reliable 2U cooling within spec.
Pros
- Direct-contact heat pipes over a copper base
- 4-pin PWM dual ball bearing fan
- Supports Intel Socket LGA 1700 up to 125 watts
- Compact 2U server height profile
Cons
- Limits processor support to 125W TDP
- Supports only Intel Socket LGA 1700
Good fit if
- You run an Intel LGA 1700 processor in a 2U server chassis.
- You need an active cooler rated up to 125 watts.
- You prefer a 4-pin PWM dual ball bearing fan.
Skip if
- You operate a CPU that exceeds 125 watts TDP.
- You use an AMD socket or older Intel platform.
Verdict: Dynatron 2U Active LGA1700 Cooler delivers direct-contact heat pipe cooling for 2U Intel LGA 1700 setups. It serves 125-watt server workloads that need dedicated PWM fan airflow.
Coolerguys 2U LGA 1700 Vapor Chamber Cooler
Best for: Intel LGA 1700 2U rackmount servers
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- LGA1700
- TDP Rating
- 200W
- Fan Speed
- 8000 RPM
- Cooling Method
- Active
- Features
- Vapor Chamber
The Coolerguys 2U Active Vapor Chamber Cooler is an active air cooler designed for Intel LGA 1700 sockets in 2U chassis. It pairs a vapor chamber base with a dual ball-bearing fan that operates between 2,600 and 8,000 RPM via a 4-pin PWM header. At 2.58 inches tall with a 78x78mm mounting pitch, it suits you if you need dedicated active cooling for high-output LGA 1700 server builds.
Pros
- Integrated vapor chamber base
- Dual ball-bearing fan rated up to 8,000 RPM
- 4-pin PWM speed control from 2,600 to 8,000 RPM
- Compact 2.58-inch height fits 2U enclosures
Cons
- Limited strictly to LGA 1700 sockets
- Requires a specific 78x78mm mounting pitch
- High minimum fan speed of 2,600 RPM
Good fit if
- You run an Intel LGA 1700 processor in a 2U rackmount chassis.
- You need a vapor chamber cooler with 4-pin PWM control.
- Your motherboard matches the 78x78mm mounting pitch.
Skip if
- You use an AMD socket or a non-LGA 1700 Intel motherboard.
- You require fan speeds below 2,600 RPM.
Verdict: Coolerguys 2U LGA 1700 Vapor Chamber Cooler delivers high-velocity active cooling and vapor chamber thermal transfer for LGA 1700 processors in 2U rackmount chassis. Its 8,000 RPM dual ball-bearing fan ensures substantial airflow within tight server spaces.
Dynatron 2U AMD SP3 Active CPU Cooler
Best for: high-wattage AMD SP3 and Threadripper 2U servers
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- sWRX8, sTRX4, TR4, SP3
- Fan Size
- 60mm
- TDP Rating
- 280W
- Cooling Method
- Active
- Dimensions
- 4.69 × 3.11 × 2.6 inches
This Dynatron unit is a 2U active server cooler designed for AMD enterprise processors. It handles up to 280 watts of heat dissipation using an integrated 60x60x25mm PWM side-blower fan. Sized at 4.69 by 3.11 inches with a 2.60-inch height, it fits AMD SP3, sWRX8, sTRX4, and TR4 sockets. It suits you if you need dedicated high-wattage active cooling for Threadripper or EPYC builds in compact rackmount enclosures.
Pros
- Dissipates up to 280 watts of CPU heat
- Includes a 60x60x25mm PWM side-blower fan
- Supports AMD SP3, sWRX8, sTRX4, and TR4 sockets
- Measures 2.60 inches tall to fit standard 2U chassis
Cons
- No Intel processor socket support listed
- Limited to AMD workstation and server sockets
Good fit if
- You run an AMD EPYC or Ryzen Threadripper CPU up to 280 watts.
- You need an active side-blower configuration inside a 2U server.
- You use motherboards with SP3, sWRX8, sTRX4, or TR4 sockets.
Skip if
- You build with Intel server or desktop processors.
- You need a passive heatsink that relies purely on chassis airflow.
Verdict: Dynatron 2U AMD SP3 Active CPU Cooler provides up to 280 watts of thermal capacity with an integrated PWM side-blower fan for AMD server platforms. It delivers dedicated active cooling tailored specifically to 2U enterprise enclosures housing EPYC or Threadripper processors.
SilverStone 2U Socket SP5 CPU Cooler
Best for: 400W AMD Epyc 2U server deployments
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- Socket SP5
- Cooler Height
- 64mm
- Heat Pipes
- 5
- Fan Size
- 60mm
- TDP Rating
- 400W
This SilverStone unit is a 2U active air cooler built specifically for AMD Epyc processors on Socket SP5. At 64mm tall, it fits standard 2U chassis clearances while handling loads up to 400W TDP. It features five 6mm heat pipes with aluminum fins and a 60mm dual ball bearing PWM fan reaching 10,000 RPM. It suits you if you run high-draw server hardware needing direct cooling inside compact rack cases.
Pros
- Rated for AMD Epyc processors up to 400W TDP
- Five 6mm heat pipes with aluminum fins
- Dual ball bearing fan rated for 198,000 hours MTTF
- High static pressure fan delivering up to 30.99mmH2O and 51.9 CFM
Cons
- Fan reaches 57.5 dBA at maximum 10,000 RPM speed
- Compatibility limited solely to Socket SP5
Good fit if
- You need to cool a high-wattage AMD Epyc processor on Socket SP5.
- You require a 64mm height profile that fits 2U server chassis.
Skip if
- You operate in noise-sensitive workspaces where a 57.5 dBA fan is unacceptable.
- You use Intel motherboards or non-SP5 AMD platforms.
Verdict: SilverStone 2U Socket SP5 CPU Cooler provides up to 400W TDP thermal dissipation within standard 64mm 2U height restrictions. It suits dense rackmount environments where cooling capacity takes priority over acoustic output.
Dynatron 2U Active Server Cooler for Intel 7529
Best for: Intel 7529 2U server rack builds
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- Intel 7529
- Cooler Height
- 67 mm
- Cooling Method
- Active
- Dimensions
- 5.22 × 3.85 × 2.64 inches
- Weight
- 1.39 pounds
View on Amazon: Dynatron 2U Active Server Cooler for Intel 7529
You get an active 2U server cooler built for Intel 7529 processors. Its 67 mm height fits standard 2U chassis racks. Direct-contact heat pipes and stacked aluminum fins transfer heat away from the CPU. A 6025 PWM side-blow fan drives air through the fin stack. Pre-applied Shin-Etsu 7762 thermal grease and captive screws speed up hardware mounting. This cooler suits you when deploying dense Intel server nodes needing dedicated active airflow.
Pros
- Stacked aluminum fins with direct-contact heat pipes
- Integrated 6025 PWM side-blowing fan
- Pre-applied Shin-Etsu 7762 thermal grease
- Captive screw mounting mechanism
- Compact 67 mm height designed for 2U chassis
Cons
- Compatible solely with Intel 7529 sockets
- Fixed side-blowing fan orientation requires aligned chassis airflow
Good fit if
- You build or maintain an Intel 7529 server inside a 2U rack.
- You want pre-applied Shin-Etsu 7762 thermal grease for quicker deployment.
- You need an active PWM side-blow fan for directed front-to-back chassis cooling.
Skip if
- You use AMD processors or alternate Intel sockets.
- You need a passive heatsink designed for high-flow chassis fan ducts.
Verdict: Dynatron 2U Active Server Cooler for Intel 7529 provides direct-contact heat pipe cooling in a compact 67 mm profile. Captive mounting hardware and pre-applied thermal compound streamline installation in compatible server racks.
HIGH Power 28mm Low-Profile LGA1700 Cooler
Best for: low-wattage Intel LGA1700 2U server builds
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- LGA1700
- Cooler Height
- 28mm
- Tower Design
- Low-Profile
- Fan Size
- 95mm
- TDP Rating
- 75W
This HIGH Power unit is an active low-profile CPU cooler designed for Intel LGA1700 sockets. At just 28mm tall, it easily fits inside tight 2U rackmount enclosures and Mini-ITX systems. It features an aluminum heatsink paired with a 95mm PWM fan operating between 1,100 and 3,500 RPM. With a 75W TDP limit and pre-applied thermal paste, you get a straightforward cooling solution for lower-power server and desktop processors.
Pros
- 28mm total height fits compact 2U server spaces
- PWM fan speed control from 1,100 to 3,500 RPM
- Pre-applied thermal paste on heatsink base
- Screw-mount installation with included back plate
Cons
- Maximum rated cooling capacity capped at 75W TDP
- Restricted exclusively to Intel LGA1700 motherboards
Good fit if
- You need a low-clearance cooler under 30mm for 2U or ITX chassis
- You run an Intel LGA1700 processor with a TDP of 75W or lower
- You prefer screw-in backplate mounting with pre-applied compound
Skip if
- You use non-LGA1700 Intel sockets or AMD platforms
- You deploy high-draw processors that exceed 75W TDP
Verdict: HIGH Power 28mm Low Profile LGA1700 Cooler offers an ultra-compact 28mm profile and variable PWM fan control for space-constrained chassis. It works reliably for 2U server deployments that operate strictly within its 75W thermal ceiling.
Dynatron 2U LGA 4926 Server Cooler
Best for: Ampere Altra LGA 4926 2U racks
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- LGA 4926
- TDP Rating
- 250W
- Fan Speed
- 11000 RPM
- Cooling Method
- Passive
- Dimensions
- 5 × 4 × 6 inches
This 2U server cooler fits Socket LGA 4926 for Ampere Altra processors. It features a copper base, copper heat pipes, and aluminum fins to dissipate up to 250W TDP. You get an integrated fan running up to 11000 RPM that pushes 58.31 CFM at 59.8 dBA, along with pre-applied Shin-Etsu thermal paste. It suits you if you deploy high-density ARM servers in standard 2U chassis.
Pros
- Supports thermal loads up to 250W TDP
- Copper base and copper heatpipes with aluminum fins
- Pre-printed Shin-Etsu X23-8079-2 thermal paste
- Delivers 58.31 CFM maximum airflow
Cons
- Generates up to 59.8 dBA noise at 11000 RPM
- Restricted strictly to Socket LGA 4926 platforms
Good fit if
- You run an Ampere Altra processor on Socket LGA 4926.
- You need 250W cooling performance inside a 2U server chassis.
Skip if
- You need compatibility for Intel or AMD processor sockets.
- You require a low-noise cooler for desktop or office environments.
Verdict: Dynatron 2U LGA 4926 Server Cooler delivers 250W TDP cooling for Ampere Altra processors in 2U chassis. Its 11000 RPM fan moves substantial air but generates 59.8 dBA of acoustic noise.
SilverStone 2U AMD Socket SP5 CPU Cooler
Best for: High-wattage 2U Socket SP5 Epyc servers
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- SP5
- Cooler Height
- 64mm
- Heat Pipes
- 5
- Fan Size
- 60mm
- TDP Rating
- 400W
This SilverStone 2U active air cooler supports AMD Epyc processors on Socket SP5 up to 400W TDP. It stands 64mm tall, fitting standard 2U server chassis and workstations. Five 6mm heat pipes transfer thermal load into an aluminum fin stack, while a 60mm dual ball bearing fan spins up to 10,000 RPM. This setup suits you if you run high-wattage SP5 server builds needing dense cooling.
Pros
- Rated for AMD Epyc processors up to 400W TDP
- Five 6mm heat pipes with aluminum fin stack
- Dual ball bearing fan rated for 198,000 hours MTTF
- High static pressure fan reaching 30.99 mmH2O
Cons
- High 57.5 dBA maximum noise level at full speed
- Socket SP5 design does not fit other platforms
Good fit if
- You run an AMD Epyc processor on Socket SP5.
- You need a compact 64mm tall cooler for a 2U rackmount chassis.
- You require thermal capacity for CPUs rated up to 400W TDP.
Skip if
- You need a quiet cooler for a desk-side workstation environment.
- You use Intel or non-SP5 AMD processor sockets.
Verdict: SilverStone 2U AMD Socket SP5 CPU Cooler delivers 400W thermal dissipation capacity for compact 2U server enclosures. Its high-speed 60mm fan generates substantial static pressure to push airflow through dense racks where acoustics are not a factor.
SilverStone 2U LGA 2011/2066 Cooler
Best for: LGA 2011 and 2066 2U rackmount servers
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- LGA 2011 / 2066 Square & Narrow
- TDP Rating
- 165W
- Fan Speed
- 8400rpm
- Dimensions
- 3.54 × 3.54 × 2.54 inches
This SilverStone unit is an active 2U server cooler designed specifically for Intel LGA 2011 and LGA 2066 square and narrow sockets. It features four 6mm heat pipes paired with aluminum fins to handle thermal loads up to 165W TDP. The included dual ball bearing PWM fan reaches speeds up to 8400 RPM. You will find it suitable if you need reliable cooling in a compact 2.54-inch height chassis.
Pros
- Fits both Square and Narrow Intel LGA 2011 and LGA 2066 sockets
- Four 6mm heat pipes rated for up to 165W TDP
- Dual ball bearing fan with 140,000-hour MTTF
- High static pressure of 21.08 mmH2O with 43 CFM airflow
Cons
- Maximum fan noise reaches 52 dBA at full speed
- Supports only Intel LGA 2011 and LGA 2066 platforms
- Cooling capacity caps at 165W TDP
Good fit if
- You run an Intel LGA 2011 or LGA 2066 processor with a Square or Narrow mounting pattern.
- You need a 2.54-inch tall active cooler engineered for standard 2U rack enclosures.
- You require a PWM fan with dual ball bearings rated for 140,000 hours of continuous operation.
Skip if
- You need a quiet acoustic profile below 50 dBA under high loads.
- You operate a CPU that exceeds a 165W TDP thermal envelope.
- You run AMD sockets or modern Intel platforms like LGA 1700 or LGA 4677.
Verdict: SilverStone 2U LGA 2011 CPU Cooler delivers targeted cooling for LGA 2011 and LGA 2066 server builds with a 165W TDP rating and high static pressure. Its compact 2.54-inch profile fits standard 2U enclosures where durable dual-ball-bearing fans are required.
MDWXDOFP 2U LGA4677 Server Cooler
Best for: High-wattage LGA4677 2U server rack deployments
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- LGA4677
- Heat Pipes
- 5
- TDP Rating
- 400W
- System Type
- Server
- Weight
- 1.76 ounces
This MDWXDOFP cooler fits 2U server chassis hosting Intel 4th and 5th Generation processors on socket LGA4677. It uses five heat pipes along with a high-speed PWM fan to handle thermal loads up to 400W TDP. If you run rackmount server builds needing high thermal capacity in a standard 2U height, this unit matches those requirements.
Pros
- Rated for up to 400W TDP thermal dissipation
- Five integrated heat pipes for heat transfer
- Pre-configured for Intel LGA4677 sockets
- Integrated high-speed PWM cooling fan
Cons
- Compatibility limited strictly to socket LGA4677
- Requires selecting between specific E1A or E1B bracket options
Good fit if
- You run a 4th or 5th generation Intel processor on socket LGA4677.
- You need 400W TDP cooling capacity inside a 2U chassis.
Skip if
- You use AMD sockets or consumer Intel desktop platforms.
- You need a fanless passive radiator for ducted airflow.
Verdict: MDWXDOFP 2U LGA4677 5 Heat Pipe Server Cooler delivers a 400W TDP rating and five heat pipes tailored for dense 2U rack enclosures. It provides dedicated high-wattage active cooling for compatible LGA4677 enterprise hardware.
NICGQMQR 2U LGA4677 5-Heatpipe Server Cooler
Best for: high-TDP LGA4677 2U server systems
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- LGA4677
- Heat Pipes
- 5
- TDP Rating
- 400W
- System Type
- Server
- Weight
- 1.76 ounces
View on Amazon: NICGQMQR 2U LGA4677 5-Heatpipe Server Cooler
This 2U server cooler from NICGQMQR is designed for 4th and 5th generation CPUs on the LGA4677 socket. It incorporates five heat pipes, high-speed PWM cooling, and a 400W TDP thermal rating within a standard 2U chassis profile. If you operate dense rackmount systems requiring high thermal dissipation, this heatsink provides dedicated thermal control tailored specifically for compatible LGA4677 server motherboards and high-power workloads.
Pros
- Rated for up to 400W TDP heat dissipation
- Equipped with 5 heat pipes for thermal transfer
- Engineered to fit standard 2U server chassis heights
- Includes a high-speed PWM cooling fan
Cons
- Compatibility limited strictly to LGA4677 server sockets
- E1A and E1B brackets require selecting specific size variants
Good fit if
- You need a 2U server cooler rated for up to 400W TDP.
- You run 4th or 5th generation CPUs on the LGA4677 socket.
Skip if
- You use a server motherboard with a socket other than LGA4677.
- You require cooling hardware for a 1U chassis.
Verdict: NICGQMQR 2U LGA4677 5 Heat Pipe Cooler delivers high-capacity heat dissipation with its 400W TDP rating and 5 heat pipes. It provides a focused thermal solution built specifically for 2U servers running LGA4677 processors.
SilverStone 2U LGA 3647 Square CPU Cooler
Best for: 2U Intel LGA 3647 Square servers
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- Intel LGA 3647 Square
- Fan Size
- 60mm
- TDP Rating
- 205W
- System Type
- Server, Workstation
- Dimensions
- 3.46 × 3.58 × 2.52 inches
This 2U active air cooler fits Intel LGA 3647 Square socket server and workstation builds. It stands 2.52 inches tall, allowing proper clearance inside 2U chassis. Four 6mm heat pipes direct thermal energy into aluminum fins, cooled by an integrated 60mm PWM dual ball bearing fan. With a 205W TDP rating, you get adequate thermal management for high-load processors. It suits compact rackmount enclosures requiring dedicated airflow directly over the processor socket.
Pros
- 205W TDP rating handles high-heat Intel processors
- Four 6mm heat pipes with aluminum fins
- 60mm PWM dual ball bearing fan for active cooling
- Compact 2.52-inch height fits 2U server chassis
Cons
- Limited strictly to Intel LGA 3647 Square sockets
- Does not support Narrow LGA 3647 mounting
Good fit if
- You run an Intel LGA 3647 Square socket processor
- You need an active cooler with up to 205W TDP support in a 2U rackmount case
Skip if
- You use an Intel LGA 3647 Narrow socket motherboard
- You operate non-3647 server or desktop platforms
Verdict: SilverStone 2U LGA 3647 Square CPU Cooler delivers 205W TDP cooling efficiency in a compact 2.52-inch package. It provides active dual ball bearing airflow for LGA 3647 Square workstation and server deployments.
SilverStone 2U LGA4677 CPU Cooler
Best for: high-TDP Intel LGA4677 2U servers
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- Intel LGA4677
- Heat Pipes
- 5
- TDP Rating
- 270W
- Fan Speed
- 1,600~10,000 RPM
- System Type
- Server, Workstation
This SilverStone 2U active air cooler supports Intel LGA4677 sockets in compact server and workstation builds. It features a 2.56-inch height, five 6mm heat pipes, and an aluminum fin stack designed for processors up to 270W TDP. Its dual ball bearing PWM fan operates between 1,600 and 10,000 RPM, producing up to 51.9 CFM airflow and 30.99mmH2O static pressure. It suits you if you need high-thermal-capacity cooling in a rackmount chassis.
Pros
- Thermal capacity supports up to 270W TDP
- Five 6mm heat pipes paired with aluminum fins
- Dual ball bearing fan rated for 198,000 hours MTTF
- High static pressure reaching up to 30.99mmH2O
Cons
- Noise level reaches 57.5 dBA at maximum fan speed
- Limited exclusively to Intel LGA4677 socket installations
Good fit if
- You run a 2U rackmount server or workstation with an Intel LGA4677 processor.
- You require an active air cooler designed to manage up to 270W heat loads.
Skip if
- You require low-noise operation below 57.5 dBA for an office environment.
- You use an AMD platform or an Intel socket other than LGA4677.
Verdict: SilverStone 2U LGA4677 CPU Cooler delivers high-pressure active cooling for demanding 270W LGA4677 rackmount installations. Its 10,000 RPM fan prioritizes airflow and static pressure over quiet operation.
Specifications side by side
| Spec | Supermicro 2U Server CPU Cooler | Dynatron 2U Active Server CPU Cooler | Dynatron 2U Active Server Cooler | Coolerguys 2U LGA 1700 Vapor Chamber Cooler | Dynatron 2U AMD SP3 Active CPU Cooler | SilverStone 2U Socket SP5 CPU Cooler | Dynatron 2U Active Server Cooler for Intel 7529 | HIGH Power 28mm Low-Profile LGA1700 Cooler | Dynatron 2U LGA 4926 Server Cooler | SilverStone 2U AMD Socket SP5 CPU Cooler | SilverStone 2U LGA 2011/2066 Cooler | MDWXDOFP 2U LGA4677 Server Cooler | NICGQMQR 2U LGA4677 5-Heatpipe Server Cooler | SilverStone 2U LGA 3647 Square CPU Cooler | SilverStone 2U LGA4677 CPU Cooler |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Socket Compatibility | LGA1156, LGA1155 | LGA 115X, LGA 1200 | LGA1700 | LGA1700 | sWRX8, sTRX4, TR4, SP3 | Socket SP5 | Intel 7529 | LGA1700 | LGA 4926 | SP5 | LGA 2011 / 2066 Square & Narrow | LGA4677 | LGA4677 | Intel LGA 3647 Square | Intel LGA4677 |
| Cooler Height | not specified | not specified | not specified | not specified | not specified | 64mm | 67 mm | 28mm | not specified | 64mm | not specified | not specified | not specified | not specified | not specified |
| Heat Pipes | not specified | not specified | not specified | not specified | not specified | 5 | not specified | not specified | not specified | 5 | not specified | 5 | 5 | not specified | 5 |
| Tower Design | not specified | not specified | not specified | not specified | not specified | not specified | not specified | Low-Profile | not specified | not specified | not specified | not specified | not specified | not specified | not specified |
| Fan Size | not specified | not specified | not specified | not specified | 60mm | 60mm | not specified | 95mm | not specified | 60mm | not specified | not specified | not specified | 60mm | not specified |
| TDP Rating | not specified | not specified | 125 Watts | 200W | 280W | 400W | not specified | 75W | 250W | 400W | 165W | 400W | 400W | 205W | 270W |
| Fan Speed | 2800 RPM | not specified | not specified | 8000 RPM | not specified | 1,600 ~ 10,000 RPM | not specified | 1100-3500 RPM | 11000 RPM | 10,000 RPM | 8400rpm | not specified | not specified | not specified | 1,600~10,000 RPM |
| System Type | not specified | not specified | Server | not specified | not specified | Server, Workstation | not specified | Desktop, ITX | not specified | Server, Workstation | not specified | Server | Server | Server, Workstation | Server, Workstation |
| Server Height | 2U | 2U | 2U | 2U | 2U | 2U | 2U | 2U | 2U | 2U | 2U | 2U | 2U | 2U | 2U |
| Cooling Method | Passive | Active | Active | Active | Active | not specified | Active | not specified | Passive | not specified | not specified | not specified | not specified | not specified | not specified |
| Material | not specified | Copper, Aluminum | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified |
| Features | not specified | not specified | not specified | Vapor Chamber | not specified | not specified | not specified | Fan | not specified | not specified | not specified | not specified | not specified | not specified | not specified |
| Dimensions | 3.6 × 3.6 × 3.6 inches | 6 × 6 × 6 inches | 5 × 5 × 5 inches | 3.54 × 3.54 × 2.58 inches | 4.69 × 3.11 × 2.6 inches | 4.65 × 3.66 × 2.52 inches | 5.22 × 3.85 × 2.64 inches | 3.74 × 3.74 × 1.1 inches | 5 × 4 × 6 inches | 4.65 × 3.66 × 2.52 inches | 3.54 × 3.54 × 2.54 inches | not specified | not specified | 3.46 × 3.58 × 2.52 inches | 4.65 × 3.07 × 2.56 inches |
| Weight | 1 pounds | not specified | 1.1 pounds | not specified | not specified | not specified | 1.39 pounds | not specified | not specified | not specified | not specified | 1.76 ounces | 1.76 ounces | not specified | 2 pounds |
| Model | SNK-P0046A4 | K555 | Q5 | 840556075127 | not specified | SST-XE02-SP5 | C2 | LGA-1700-mITX | W1 | SST-XE02-SP5B | SST-XE02-2066S | MDWXDOFP | NICGQMQR | SST-XE02-3647SB | SST-XE02-4677B |
| Color | not specified | not specified | Various | Black | not specified | not specified | not specified | not specified | not specified | Black | Silver | Silver | Silver | Black & silver | Black & black |
| Size | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | 2U | not specified | 4677-2UAF8 Cooler | 4677-2UAF8 Cooler | not specified | not specified |
Is a 2U CPU cooler worth it?
Choosing a 2U CPU cooler ensures your heatsink fits vertical clearances like 64 mm or 67 mm in standard server enclosures. To dissipate up to 400W TDP within these tight constraints, active models utilize high-speed fans operating between 8,000 RPM and 11,000 RPM. This airflow allows high-density computing for platforms like AMD SP3, SP5, or Intel LGA4677. However, compact fans spinning at high velocities generate acoustic levels reaching 59.8 dBA. You get substantial thermal dissipation strictly scaled for dense enterprise racks where acoustic output is secondary.
Worth it if
- You install hardware into server chassis limited to standard 64mm or 67mm 2U vertical clearances.
- You manage dense enterprise server platforms requiring active thermal dissipation up to 400W TDP.
Skip it if
- You require quiet operation, as active 2U fans can reach 11000 RPM and produce 59.8 dBA of acoustic noise.
- You operate processor workloads that exceed the 75W thermal ceiling of ultra-compact 28mm coolers.
If your chassis needs dedicated airflow alongside a heatsink, you can evaluate dimensions and airflow ratings among the best case fans for CPU Cooler.
How We Picked 2U Coolers
To select coolers for this guide, you find units matching 2U server height. A product qualifies when the listing title or published feature list explicitly states 2U height compatibility. The guide includes only one size or variant from each product family. All technical details come directly from published specifications on the listings, without physical handling.
The 15 selections show products in stock first. You evaluate options using published hardware specifications, including socket compatibility, cooling method, and physical measurements. Catalog data and stock status update daily so you see accurate information for your 2026 rackmount builds.
Key Specifications for Choosing 2U Coolers
-
Select Active or Passive Cooling
You must choose between active and passive cooling methods based on your server chassis airflow design. Active coolers integrate a dedicated fan directly on the heatsink assembly to force air through the fins. Passive coolers rely entirely on high-velocity system chassis fans and internal air shrouds to direct cooling across the heatsink. If your rack enclosure lacks concentrated ducting, select an active cooler. The Dynatron 2U Active Server Cooler for Intel 7529 provides an active setup with attached direct fan cooling.
-
Evaluate Vapor Chamber Options
Look at the internal thermal transfer method when selecting a cooler for dense processing tasks. Standard coolers use solid metal bases or heat pipes, but advanced units utilize an integrated vapor chamber. Vapor chambers spread heat across a planar surface faster than conventional flat plates, which helps prevent hotspots on modern multi-core processors. You should choose this design if your processor produces intense, concentrated thermal output. The Coolerguys 2U LGA 1700 Vapor Chamber Cooler features a dedicated vapor chamber design beneath its high-velocity fan.
-
Inspect Heat Pipe Count
Check the heat pipe count in the cooler specifications to ensure sufficient thermal conduction away from the base. Multi-pipe configurations distribute heat evenly across the fin stack to maximize thermal dissipation before airflow evacuates the heat from the chassis. If you run sustained high-wattage computing jobs, prioritize coolers with multiple embedded pipes rather than basic solid-block designs. For instance, the MDWXDOFP 2U LGA4677 Server Cooler provides 5 heat pipes designed to distribute thermal loads across dense server rack enclosures.
-
Check Total Cooler Height
Compare vertical clearance specifications to guarantee the heatsink fits beneath your server chassis cover without blocking airflow. Standard 2U racks support heights up to around 2.6 inches, but highly compact rack setups or specialized ITX builds require significantly shorter profiles. You should verify physical dimensions before installation to avoid contact with upper chassis panels. The HIGH Power 28mm Low-Profile LGA1700 Cooler provides an ultra-compact 1.1-inch height profile, making it suitable if your rack enclosure includes internal obstructions.
-
Verify System Type Classification
Review the published system type attribute to align the cooler with your specific operating environment. Some models are designated specifically for server racks, while others list dual compatibility for both server and workstation environments. Workstation-capable models fit setups where thermal durability must balance with different chassis mounting orientations and airflow configurations. If you deploy hardware into mixed-use server or workstation chassis, check this specification. The SilverStone SST-XE02-SP5 CPU Cooler explicitly lists compatibility for both server and workstation system types.
-
Consider Mounting Hardware Features
Examine the mounting design and installation features listed for the cooler. Certain models incorporate captive mounting hardware and pre-applied thermal compound, which speeds up assembly and prevents dropped screws inside dense rack motherboards. Other designs use standard push pins or brackets that require manual thermal paste application. If you perform frequent maintenance or rapid rack deployments, choose hardware with integrated captive fasteners. The Dynatron C2 model includes captive mounting hardware alongside pre-applied compound to streamline your installation process.
Frequently asked questions
Can you use a 2U CPU cooler in a standard desktop or Mini-ITX case?
Yes, you can use select 2U coolers in desktop or ITX systems if the socket matches. The HIGH Power 28mm Low-Profile LGA1700 Cooler specifically lists desktop and ITX compatibility alongside its 2U server classification. However, you must observe thermal limitations carefully, as this compact model operates strictly within a 75W ceiling.
What is the difference between vapor chamber and heat pipe cooling in a 2U rack?
Vapor chambers use an internal planar chamber to spread heat across the base, while heat pipe systems conduct thermal energy through tubular lines into cooling fins. The Coolerguys 2U LGA 1700 cooler integrates vapor chamber transfer paired with an 8,000 RPM fan. Multi-pipe designs like the MDWXDOFP 2U cooler utilize five dedicated heat pipes to dissipate thermal loads.
How loud do high-speed 2U server CPU cooler fans get?
High-speed 2U cooler fans generate noticeable acoustic noise because compact heatsinks require high rotational speeds to push air effectively. For instance, the Dynatron W1 features an 11000 RPM fan that produces 59.8 dBA of acoustic noise. Similarly, the SilverStone SST-XE02-4677B uses a 10,000 RPM fan that prioritizes static pressure over quiet operation in dense server chassis.
What thermal TDP range do 2U CPU coolers support?
You can find 2U coolers rated anywhere from 75W to 400W TDP to match your hardware requirements. Low-profile models like the HIGH Power LGA-1700-mITX handle modest 75W server workloads. At the upper end, models like the SilverStone SST-XE02-SP5B and NICGQMQR 4677-2UAF8 are engineered to dissipate up to 400W TDP on high-performance multi-core processors.
What server and workstation processor sockets do 2U coolers fit?
Coolers in this class fit a wide selection of Intel, AMD, and ARM server sockets. Intel options cover LGA 1200, LGA 1700, LGA 2011, LGA 2066, LGA 3647 Square, LGA4677, and Intel 7529 platforms. For AMD deployments, dedicated designs support Socket SP3, Threadripper, and Socket SP5, while the Dynatron W1 provides mounting specifically for Ampere Altra LGA 4926 sockets.
How are 2U CPU coolers mounted to server motherboards?
You secure 2U coolers using either captive screw fasteners or integrated push pins tailored to the motherboard socket. The Supermicro SNK-P0046A4 employs push-in pin mounting for direct hardware installation. In contrast, models like the Dynatron C2 incorporate captive mounting screws alongside pre-applied thermal compound, which ensures aligned contact across the processor surface without loose mounting brackets.
What footprint dimensions should you verify on a 2U cooler?
You should check length and width specifications alongside height to prevent interference with nearby memory or expansion slots. While vertical profiles generally remain between 1.1 and 2.64 inches, horizontal dimensions vary. For example, the SilverStone SST-XE02-3647SB measures 3.58 inches wide by 3.46 inches long, whereas the Dynatron C2 extends to 3.85 inches wide by 5.22 inches long.