Best 2U Heatsinks in 2026: 15 Picks Ranked by Specs
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Selecting a 2U heatsink requires matching socket dimensions and chassis airflow to your server enclosure. For 2026, this guide compares 15 products based on the specifications published on the listings. The Supermicro 2U Server Heatsink leads the rankings because its LGA 2011 socket compatibility and dedicated 2U server height deliver exact fitment for Xeon E5 rack deployments.
This guide helps you decide between active and passive cooling solutions based on your processor socket, vertical clearance limits, and chassis airflow design.
Quick picks
The best fit for you
- You run an LGA 2011 Supermicro 2U server Supermicro 2U Server Heatsink It provides verified fitment for LGA 2011 sockets in standard 2U server enclosures.
- You build an AMD Socket SP3 2U server Dynatron 2U Active Aluminum SP3 Heatsink It features active aluminum cooling designed specifically for AMD Socket SP3 motherboards.
- You need active cooling for LGA 1700 CPUs Dynatron 2U LGA 1700 Active Cooler It delivers dedicated active cooling for LGA 1700 processors within a 2.44-inch vertical profile.
- You want passive cooling for AMD AM4 or AM5 Dynatron 2U Passive AM4 Heatsink It provides fanless passive heat dissipation for both AM4 and AM5 socket platforms.
Our 15 picks
Supermicro 2U Server Heatsink
Best for: Supermicro X9 2U servers with Xeon E5
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- LGA2011 or LGA1356
- Compatible Device
- intel Xeon E5-2600 and E5-2400 Series
- Mounting Type
- Screws & Springs
- System Type
- Server
- Weight
- 10 pounds
This 2U server cooler fits Intel Xeon E5-2600 and E5-2400 series processors on Supermicro X9 UP and DP server platforms. You get direct support for LGA2011 and LGA1356 sockets. The included mounting brackets support both square and narrow Independent Loading Mechanisms using screws and springs. It suits you if you maintain compatible X9 rackmount nodes.
Pros
- Includes mounting hardware for both square and narrow ILMs
- Fits LGA2011 and LGA1356 processor sockets
- Compatible with Intel Xeon E5-2600 and E5-2400 series CPUs
- Designed for 2U and larger Supermicro X9 UP and DP servers
Cons
- Limits socket support to legacy LGA2011 and LGA1356 platforms
- Lists a heavy shipping weight of 10 pounds
- Omits integrated cooling fan specifications
Good fit if
- You run Supermicro X9 series UP or DP servers.
- You need hardware mounting for either square or narrow ILM sockets.
- You use Intel Xeon E5-2600 or E5-2400 processors on LGA2011 or LGA1356.
Skip if
- You use modern Intel sockets such as LGA3647 or LGA4677.
- You build on an AMD platform like AM4 or AM5.
Verdict: Supermicro 2U Dual ILM Server Heatsink delivers verified cooling fitment for Intel Xeon E5 platforms across square and narrow ILM footprints. It provides a standard factory fit for maintaining Supermicro X9 2U server infrastructure.
Supermicro 2U Passive LGA3647 Heatsink
Best for: 2U LGA-3647 Supermicro rackmount server builds
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- Socket P lga-3647
- Cooling Method
- Passive
- Compatible Device
- Processor
- Dimensions
- 4.25 x 3.07 x 2.52 inches
- Weight
- 1 pounds
This Supermicro 2U passive heatsink mounts directly to Socket P LGA-3647 processors on Supermicro X11 Purley platforms. Measuring 2.52 inches tall, 3.07 inches wide, and 4.25 inches long, it fits standard 2U rackmount enclosures without vertical clearance issues. Because it uses fanless passive cooling and weighs one pound, you rely entirely on chassis fans to move air across the fins. It suits your build if you run a dedicated 2U server chassis.
Pros
- Built for 2U server chassis with a 2.52-inch height
- Passive design eliminates moving fan parts
- Native fit for Socket P LGA-3647 motherboards
- Compact footprint measuring 3.07 inches wide by 4.25 inches long
Cons
- No integrated cooling fan included
- Requires directed chassis airflow to maintain operating temperatures
- Restricted to Socket P LGA-3647 systems
Good fit if
- You run a 2U server using a Supermicro X11 Purley platform.
- You need a passive cooler for a Socket P LGA-3647 processor.
- You have high-static-pressure chassis fans providing dedicated airflow.
Skip if
- You operate a chassis without dedicated internal fan ducts or high-airflow fans.
- You use an AMD socket or a different Intel socket standard.
Verdict: Supermicro 2U Passive LGA3647 Heatsink provides a compact, fan-free thermal solution engineered specifically for 2U Socket P server deployments. It delivers reliable passive cooling when paired with directed rackmount chassis airflow.
Dynatron 2U Active Aluminum SP3 Heatsink
Best for: 2U AMD EPYC Socket SP3 server builds
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- Socket SP3
- Material
- Aluminum
- Cooling Method
- Active
- Compatible Device
- AMD EPYC
- Dimensions
- 5 × 4.5 × 6 inches
This Dynatron cooler provides active thermal management designed specifically for 2U rackmount chassis running AMD EPYC processors on Socket SP3. The unit features an aluminum heatsink with embedded heat pipes to transfer heat away from your CPU. It weighs approximately one pound and measures 5 inches long by 4.5 inches wide. This unit suits you if you need dedicated active airflow inside a compact 2U server enclosure.
Pros
- Designed for 2U server rack form factors
- Dedicated AMD EPYC Socket SP3 compatibility
- Active cooling method with integrated airflow
- Aluminum heatsink with embedded heat pipes
Cons
- Socket support limited strictly to AMD SP3
- No mounting hardware included for Intel platforms
- Listed 6-inch height specification requires checking rack clearance
Good fit if
- You run an AMD EPYC processor on Socket SP3 in a 2U rackmount chassis.
- You need active cooling rather than a passive server heatsink.
- You want an aluminum heatsink that weighs approximately one pound.
Skip if
- You use Intel platforms or non-SP3 AMD processor sockets.
- You prefer passive cooling driven entirely by chassis airflow.
Verdict: Dynatron 2U Active AMD SP3 Cooler delivers dedicated active cooling with embedded heat pipes for Socket SP3 processors in 2U systems. Its targeted socket design makes it a practical choice for compatible AMD server hardware.
Dynatron 2U Active CPU Cooler
Best for: 2U server chassis requiring active cooling
- Server Height
- 2U (what this guide is about)
- Cooling Method
- Active
- Compatible Device
- CPU
- Dimensions
- 4.25 × 3.15 × 2.6 inches
This Dynatron 2U Active CPU Cooler delivers dedicated active cooling for your 2U rackmount server enclosure. It measures 2.6 inches high, 4.25 inches long, and 3.15 inches wide, fitting the standard vertical clearance of a 2U chassis. If you need a compact active cooler designed specifically for 2U server dimensions with a pre-configured footprint, this unit provides the direct dimensions required for your chassis layout planning.
Pros
- Built for standard 2U server chassis height
- Active cooling configuration
- Compact 2.6-inch overall height
- Footprint measures 4.25 by 3.15 inches
Cons
- Socket compatibility not listed in specifications
- Fan speed and airflow ratings not specified
Good fit if
- You need an active cooler with a 2.6-inch height profile for a 2U chassis.
- You require a compact cooler footprint of 4.25 by 3.15 inches.
Skip if
- You need a passive heatsink designed for chassis fan ducts.
- You require verified socket compatibility in the published specifications.
Verdict: Dynatron 2U Active CPU Cooler fits 2U server enclosures with its 2.6-inch vertical clearance and active cooling design. It gives you explicit chassis dimension measurements for compact server integration.
Dynatron 2U Active CPU Cooler
Best for: active cooling in compact 2U server racks
- Server Height
- 2U (what this guide is about)
- Material
- Aluminum Heatsink with Heatpipe
- Cooling Method
- Active
- Fan Size
- 60mm
- Dimensions
- 4.25 × 3.15 × 2.6 inches
- Weight
- 1 pounds
The Dynatron 2U Active Heatsink is an active server cooler built for 2U chassis. It combines an aluminum heatsink with embedded heatpipes and a dedicated 60mm dual ball-bearing fan. Measuring 2.6 inches tall, 4.25 inches long, and 3.15 inches wide, it fits compact rackmount clearances while weighing 1 pound. It comes with pre-printed Shin-Etsu 7762 thermal compound. This unit suits you if you need direct airflow inside a compact 2U server enclosure.
Pros
- Embedded heatpipes within an aluminum heatsink
- Equipped with a 60mm dual ball-bearing fan
- Pre-printed Shin-Etsu 7762 thermal interface material
- Low 2.6-inch total height fits 2U server clearances
Cons
- Supported CPU socket types are not listed in the specifications
- Airflow depends on a dedicated 60mm fan rather than standard case fans
Good fit if
- You need active cooling with an integrated 60mm fan in a 2U server rack.
- You prefer factory-applied Shin-Etsu 7762 thermal paste for straightforward installation.
- You require a compact cooler height of 2.6 inches to clear chassis lids.
Skip if
- You require verified socket mounting dimensions before purchase.
- You run a passive cooling setup utilizing chassis-level fan ducts.
Verdict: Dynatron 2U Active Heatsink with 60mm Fan provides direct active cooling with embedded heatpipes and pre-applied thermal compound for 2U rackmount enclosures. Its 2.6-inch height ensures proper clearance in compact server chassis where dedicated local airflow is required.
Goshyda 2U Active LGA2011 Server Heatsink
Best for: LGA 2011 Narrow ILM 2U servers
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- Socket LGA2011 /Narrow ILM
- Cooling Method
- Active
- Compatible Device
- Xeon processor E5 2600 series
- Features
- Fan
- Dimensions
- 0.39 × 0.39 × 0.39 inches
This Goshyda active cooler is built for 2U rackmount chassis running Intel Xeon E5-2600 series processors, including v2 and v3 revisions. It features a built-in cooling fan that operates at up to 8400 RPM to push air across the heatsink fins. Designed specifically for the LGA 2011 Narrow ILM mounting footprint, it suits you if you need a dedicated high-speed active cooling solution for compact multi-socket enterprise server motherboards.
Pros
- Integrated active cooling fan operating at 8400 RPM
- Tailored for 2U server chassis clearance
- Compatible with Intel Xeon E5-2600, v2, and v3 series
- Engineered for Socket LGA 2011 Narrow ILM
Cons
- Lacks support for LGA 2011 Square ILM motherboards
- Restricted to older LGA 2011 platform processors
- Only one fixed fan speed listed in specifications
Good fit if
- You run a 2U rack server with an Intel Xeon E5-2600 series processor.
- You have a server board requiring LGA 2011 Narrow ILM mounting.
- You need active cooling powered by an 8400 RPM fan.
Skip if
- You use a motherboard with an LGA 2011 Square ILM socket.
- You deploy newer platforms such as LGA 3647, LGA 4677, or AMD sockets.
- You operate a fully ducted chassis that requires a passive heatsink.
Verdict: Goshyda 2U Active LGA 2011 Cooler delivers high-velocity airflow via an 8400 RPM fan for rackmount systems. It is an ideal drop-in active thermal solution for LGA 2011 Narrow ILM Xeon E5-2600 builds.
Dynatron 2U Passive AMD SP5 Cooler
Best for: high-wattage AMD Socket SP5 2U servers
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- Socket SP5
- Material
- Aluminum Fin + Copper embedded Base
- Cooling Method
- Passive
- Dimensions
- 118.0 x 92.4 x 64 mm
This is a passive 2U server heatsink built for AMD Genoa processors on Socket SP5. It features a copper-embedded base, heat pipes, and aluminum fins designed to dissipate up to 320 watts of CPU heat. With dimensions of 118.0 by 92.4 by 64 mm, it fits standard 2U server chassis clearance. If you run an SP5 server with dedicated chassis airflow, this heatsink manages your high-power workload.
Pros
- Supports heat dissipation up to 320 watts
- Copper-embedded base with integrated heat pipes
- Tailored for AMD Genoa Socket SP5 processors
- 64 mm height complies with 2U server dimensions
Cons
- Requires chassis fan airflow due to passive design
- Limited strictly to AMD Socket SP5 motherboards
Good fit if
- You run AMD Genoa Socket SP5 processors in a 2U rack.
- You need passive thermal dissipation up to 320 watts.
- Your chassis provides dedicated internal airflow fans.
Skip if
- You require an active heatsink with a built-in fan.
- You use Intel sockets or older AMD server platforms.
Verdict: Dynatron 2U Passive AMD SP5 Cooler provides up to 320 watts of cooling capacity for high-density AMD Genoa server environments. It works as an effective passive cooling solution when paired with forced chassis airflow.
Dynatron 2U Socket SP5 Active Cooler
Best for: AMD Genoa SP5 2U rack server builds
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- Socket SP5
- Material
- Aluminum Fin Base and Aluminum Fin Stack
- Cooling Method
- Active
- Dimensions
- 118 x 92.4 x 65 mm
This is an active cooling unit designed for 2U servers and larger chassis. It features five heatpipes, an aluminum fin stack, an aluminum fin base, and a 4-pin fan. The unit handles up to 320 watts of heat dissipation and fits the AMD SP5 socket for Genoa processors. It measures 118 by 92.4 by 65 millimeters. You will find it suits high-wattage AMD server builds requiring dedicated active airflow in limited rack space.
Pros
- Dissipates up to 320 watts of CPU power
- Equipped with 5 heatpipes and aluminum fin stack
- Includes integrated 4-pin active cooling fan
- Fits compact 2U server chassis at 65 mm height
Cons
- Only listed for AMD SP5 socket Genoa processors
- Does not include Intel socket mounting hardware
Good fit if
- You run an AMD Genoa processor on socket SP5.
- You need up to 320 watts of heat dissipation in a 2U rack.
- You require active fan cooling rather than a passive heatsink.
Skip if
- You use an Intel server platform.
- You have an AMD AM4, AM5, or older socket build.
Verdict: Dynatron 2U Active AMD SP5 Server Cooler delivers 320 watts of thermal capacity for AMD Genoa systems in 2U chassis. Its five heatpipes and integrated 4-pin fan ensure targeted cooling in dense rack environments.
Dynatron 2U LGA 1700 Active Cooler
Best for: LGA 1700 CPUs in 2U server chassis
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- Socket FCLGA 1700
- Cooling Method
- Active
- Dimensions
- 106 x 106 x 62 mm
The Dynatron Q10 is an active 2U server cooler built for Intel socket LGA 1700 motherboards. It measures 62 mm tall and 106 mm wide, allowing it to slide into standard 2U chassis. An embedded copper core transfers heat to aluminum radial fins, cooled by an integrated 7720 top-down blowing fan. It suits you if you deploy 12th Gen Intel Core processors rated up to 125 watts in rackmount systems.
Pros
- Supports CPU heat dissipation up to 125 watts
- Copper core insert enhances aluminum radial fin heatsink
- Integrated 7720 top-down round fan provides active airflow
- 62 mm height fits 2U server enclosures and higher
Cons
- Compatible only with Intel socket LGA 1700
- Not suited for processors exceeding 125 watts TDP
Good fit if
- You run an Intel LGA 1700 CPU in a 2U or taller chassis.
- You need active top-down airflow with an integrated fan.
- You operate a processor within a 125-watt power envelope.
Skip if
- You deploy AMD sockets or alternative Intel platforms.
- You require a passive heatsink designed strictly for chassis wind tunnels.
- You run high-draw server chips exceeding 125 watts.
Verdict: Dynatron Q10 2U Active Cooler delivers dedicated active cooling for 125-watt LGA 1700 builds in standard 2U server racks. Its integrated top-down fan and copper core provide targeted heat dissipation for compatible Intel chips.
Dynatron 2U Passive AM4 Heatsink
Best for: passive cooling on AMD AM4 rackmount builds
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- Socket AM4 or AM5
- Material
- Aluminum
- Cooling Method
- Passive
- Dimensions
- 4.13" x 2.91" x 2.48"
- Weight
- 2 pounds
This 2U passive server heatsink from Dynatron is designed for AMD AM4 and AM5 sockets. It features aluminum stacked fins paired with heatpipes to handle heat dissipation up to 120 watts. It comes with pre-applied Shin-Etsu 7762 thermal paste and measures 4.13 by 2.91 by 2.48 inches. You should choose this heatsink if you operate an AMD rackmount server that relies on chassis fan airflow for cooling.
Pros
- Supports AMD AM4 and AM5 sockets
- Up to 120W heat dissipation capacity
- Pre-applied Shin-Etsu 7762 thermal paste
- Aluminum stacked fins with heatpipes
Cons
- Passive design provides no dedicated fan
- Limited to AMD AM4 and AM5 sockets
- Rated heat dissipation caps at 120 watts
Good fit if
- You run an AMD AM4 or AM5 processor in a 2U chassis.
- You rely on chassis airflow rather than an attached cooler fan.
- You need a heatsink rated for processors up to 120 watts.
Skip if
- You need an active cooler with a pre-installed fan.
- You use an Intel socket or a non-AM4/AM5 motherboard.
- You run a processor that produces more than 120 watts.
Verdict: Dynatron 2U Passive AM4 Heatsink delivers 120-watt passive cooling for AM4 and AM5 processors in 2U chassis. It suits AMD server builds that already feature dedicated case fans.
Boartechs 2U LGA4677 5-Heatpipe Server Cooler
Best for: LGA4677 servers needing active 2U cooling
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- LGA4677
- Material
- Aluminum extrusion
- Heat Pipes
- 5 Heat Pipes
- System Type
- Server
- Weight
- 2.2 pounds
View on Amazon: Boartechs 2U LGA4677 5-Heatpipe Server Cooler
This Boartechs unit is an active 2U server cooler built for Intel LGA4677 sockets across 4th and 5th generation server processors. It features an extruded aluminum heatsink paired with five heat pipes and an integrated PWM fan. You can install the assembly directly without detaching the fan first. It suits you if you maintain high-density rackmount chassis and need dedicated thermal management for modern multi-core server hardware.
Pros
- Equipped with 5 heat pipes for thermal transfer
- Installs directly without removing the cooling fan
- Supports dynamic fan speed adjustments via PWM control
- Constructed with an extruded aluminum heatsink
Cons
- Weighs over 2.2 pounds, adding significant load to the socket
- Socket support in the data is limited strictly to LGA4677
- Specific CFM airflow and noise level decibel figures are omitted
Good fit if
- You run Intel 4th or 5th generation CPUs on an LGA4677 server board.
- You need a 2U rackmount cooler with active PWM speed regulation.
- You prefer a drop-in installation that does not require taking the fan off.
Skip if
- You use alternate sockets such as LGA2011, LGA3647, or AMD platforms.
- You operate fully passive chassis duct systems without onboard cooler fans.
Verdict: Boartechs 2U LGA4677 5-Heatpipe Cooler provides dedicated thermal management for modern enterprise sockets through its multi-pipe layout and straightforward installation. It is a solid choice when you need active 2U airflow without disassembling components.
YQQEWI 2U LGA 2011 Passive Server Heatsink
Best for: 2U LGA 2011 narrow server setups
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- LGA 2011 Narrow
- Cooling Method
- Passive
- Compatible Device
- Server CPU
- Lighting
- RGB
- Color
- Black
This YQQEWI server cooler is a passive heatsink designed for 2U rackmount chassis. It supports LGA 2011 sockets with narrow configurations and includes integrated RGB lighting. Because it uses passive cooling, you rely on your server chassis fans for airflow across its black heatsink body. This unit suits you if you maintain a 2U rack server requiring a passive narrow socket LGA 2011 replacement.
Pros
- Designed for 2U server chassis height
- Passive cooling operates without an attached fan
- Compatible with LGA 2011 narrow socket layouts
- Built-in RGB lighting
Cons
- Requires existing chassis fan airflow to function
- Socket support limited strictly to LGA 2011
Good fit if
- You run a 2U server with narrow LGA 2011 socket mounts.
- You have chassis fans configured to move air across passive heatsinks.
Skip if
- You need an active cooler with an integrated fan.
- You use motherboards with sockets other than LGA 2011.
Verdict: YQQEWI 2U Passive LGA 2011 Server Heatsink provides passive heat dissipation tailored for 2U server chassis on LGA 2011 narrow sockets. It serves as a direct drop-in cooling solution when your chassis handles continuous directed airflow.
ZDAVSFR 2U Passive LGA 2011 Heatsink
Best for: 2U LGA 2011 passive server cooling
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- LGA 2011 Narrow
- Cooling Method
- Passive
- Compatible Device
- Server CPU
- Lighting
- RGB
- Color
- Black
This is a passive 2U server cooler designed for LGA 2011 sockets. You get a fanless black heatsink engineered to work with your server chassis airflow to manage CPU thermals. It also lists integrated RGB lighting, which sets it apart from standard enterprise hardware. If you maintain an LGA 2011 server rack and require a 2U passive cooling solution with an uncommon lighting spec, this unit fits your enclosure.
Pros
- Built for 2U server chassis form factors
- Compatible with LGA 2011 CPU sockets
- Passive cooling design uses system fan airflow
- Includes RGB lighting specification
Cons
- No integrated cooling fan included
- Socket support limited strictly to LGA 2011
Good fit if
- You run an LGA 2011 server inside a 2U rackmount case.
- You rely on chassis-directed airflow for passive CPU cooling.
- You want RGB lighting integrated into your server heatsink.
Skip if
- You need an active heatsink with a dedicated built-in fan.
- You use modern sockets like LGA 3647, LGA 4677, or AMD platforms.
Verdict: ZDAVSFR 2U LGA 2011 Passive Heatsink provides a dedicated fanless cooling solution for LGA 2011 server deployments in standard 2U racks. Its passive design and listed RGB lighting make it a distinctive replacement option for compatible dual-processor boards.
CTDOFUM 2U Narrow LGA 2011 Heatsink
Best for: 2U LGA 2011 narrow-pitch server builds
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- LGA 2011 Narrow
- Lighting
- RGB
- Dimensions
- 0.39 × 0.39 × 0.39 inches
The CTDOFUM 2U Narrow LGA 2011 Heatsink is a server cooling solution engineered for rackmount setups. It matches 2U chassis clearances and fits motherboards requiring a 56mm by 94mm narrow mounting pitch on LGA 2011 sockets. Four integrated heat pipes support processors with thermal demands up to 150W. This unit suits you if you run dense rack servers that need targeted thermal dissipation across a narrow ILM footprint without exceeding standard heights.
Pros
- Rated for CPUs up to 150W
- Built with four heat pipes
- Designed for 2U server chassis height
- Fits 56mm x 94mm narrow mounting pitch
Cons
- Limited strictly to LGA 2011 narrow socket layouts
- Conflicting lighting specifications in listed data
Good fit if
- You need a 2U cooler for an LGA 2011 narrow socket.
- You run a processor requiring up to 150W thermal capacity.
- Your motherboard has a 56mm x 94mm heatsink mounting pitch.
Skip if
- You use a square LGA 2011 ILM motherboard.
- You operate a CPU that exceeds 150W TDP.
Verdict: CTDOFUM 2U Narrow LGA 2011 Heatsink delivers 150W cooling capability via four heat pipes for narrow-ILM 2U server chassis. It is a focused choice when your server board uses a 56mm by 94mm mounting pattern.
CTDOFUM 2U LGA4677 5-Heatpipe Cooler
Best for: High-TDP LGA4677 processors in 2U servers
- Server Height
- 2U (what this guide is about)
- Socket Compatibility
- LGA4677
- Compatible Device
- Server CPU
- Heat Pipes
- 5 Heat Pipes
- Dimensions
- 0.39 × 0.39 × 0.39 inches
This CTDOFUM unit is a 2U server cooler built for Intel LGA4677 4th and 5th Generation processors. You get five integrated heat pipes and a high-speed PWM cooling fan matched to a 400W TDP rating. It provides active thermal cooling inside tight 2U rack enclosures. You should choose this model if your server build requires high-wattage LGA4677 heat dissipation with dedicated PWM airflow control.
Pros
- 400W TDP cooling capacity
- Five integrated heat pipes
- High-speed PWM fan included
- Fits compact 2U server chassis
Cons
- Limited strictly to LGA4677 platforms
- Fan airflow and noise decibel ratings not published
Good fit if
- You run an Intel 4th or 5th Gen CPU on an LGA4677 motherboard.
- You require an active 2U cooler rated for up to 400W TDP.
Skip if
- You use other platforms like AMD sockets or Intel LGA2011 and LGA3647.
- You need a fanless passive heatsink for chassis-ducted airflow.
Verdict: CTDOFUM 2U LGA4677 5-Heatpipe Cooler delivers 400W TDP thermal dissipation through five heat pipes and a high-speed PWM fan for tight 2U rack setups. It offers an active cooling solution designed specifically for modern Intel server hardware.
Specifications side by side
| Spec | Supermicro 2U Server Heatsink | Supermicro 2U Passive LGA3647 Heatsink | Dynatron 2U Active Aluminum SP3 Heatsink | Dynatron 2U Active CPU Cooler | Dynatron 2U Active CPU Cooler | Goshyda 2U Active LGA2011 Server Heatsink | Dynatron 2U Passive AMD SP5 Cooler | Dynatron 2U Socket SP5 Active Cooler | Dynatron 2U LGA 1700 Active Cooler | Dynatron 2U Passive AM4 Heatsink | Boartechs 2U LGA4677 5-Heatpipe Server Cooler | YQQEWI 2U LGA 2011 Passive Server Heatsink | ZDAVSFR 2U Passive LGA 2011 Heatsink | CTDOFUM 2U Narrow LGA 2011 Heatsink | CTDOFUM 2U LGA4677 5-Heatpipe Cooler |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Socket Compatibility | LGA2011 or LGA1356 | Socket P lga-3647 | Socket SP3 | not specified | not specified | Socket LGA2011 /Narrow ILM | Socket SP5 | Socket SP5 | Socket FCLGA 1700 | Socket AM4 or AM5 | LGA4677 | LGA 2011 Narrow | LGA 2011 Narrow | LGA 2011 Narrow | LGA4677 |
| Material | not specified | not specified | Aluminum | not specified | Aluminum Heatsink with Heatpipe | not specified | Aluminum Fin + Copper embedded Base | Aluminum Fin Base and Aluminum Fin Stack | not specified | Aluminum | Aluminum extrusion | not specified | not specified | not specified | not specified |
| Server Height | 2U+ | 2U | 2U | 2U | 2U | 2U | 2U | 2U | 2U | 2U | 2U | 2U | 2U | 2U | 2U |
| Cooling Method | not specified | Passive | Active | Active | Active | Active | Passive | Active | Active | Passive | not specified | Passive | Passive | not specified | not specified |
| Compatible Device | intel Xeon E5-2600 and E5-2400 Series | Processor | AMD EPYC | CPU | not specified | Xeon processor E5 2600 series | not specified | not specified | not specified | not specified | not specified | Server CPU | Server CPU | not specified | Server CPU |
| Fan Size | not specified | not specified | not specified | not specified | 60mm | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified |
| Dimensions | not specified | 4.25 x 3.07 x 2.52 inches | not specified | not specified | not specified | not specified | 118.0 x 92.4 x 64 mm | 118 x 92.4 x 65 mm | 106 x 106 x 62 mm | 4.13" x 2.91" x 2.48" | not specified | not specified | not specified | not specified | not specified |
| Mounting Type | Screws & Springs | 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 | not specified |
| Heat Pipes | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | 5 Heat Pipes | not specified | not specified | not specified | 5 Heat Pipes |
| Lighting | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | RGB | RGB | RGB | not specified |
| System Type | Server | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | Server | Server | Server | not specified | Server |
| Color | not specified | not specified | not specified | not specified | not specified | default | not specified | not specified | not specified | not specified | 17 | Black | Black | LGA2011-R63-3 | Silver |
| Features | not specified | not specified | not specified | not specified | not specified | Fan | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified |
| Weight | 10 pounds | 1 pounds | 1 pounds | not specified | 1 pounds | not specified | not specified | not specified | not specified | 2 pounds | 2.2 pounds | 1.76 ounces | not specified | not specified | not specified |
| Model | NA | SNK-P0068PS | A26 | B13 | B13 | GOSHYDAsehw4gia2n154 | not specified | J10 | 840556075455 | not specified | Boartechs | YQQEWI | not specified | not specified | CTDOFUM |
| Size | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | 4677-2UAF8 Cooler | A-RGB | A-RGB | NO RGB | With E1B Bracket |
If you also need storage cooling for a tight chassis, you can compare the best nvme SSDs with heatsink by their form factors and thermal specs.
How to Choose the Right 2U Heatsink
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Match Socket and Mounting Pattern
You must match the heatsink directly to your motherboard socket type before buying. Server motherboards use distinct socket layouts, such as LGA 2011, LGA 1700, LGA 4677, AMD SP3, SP5, or AM4. For enterprise platforms like LGA 2011, check whether your board requires a standard footprint or a narrow-ILM design. The CTDOFUM 2U Narrow LGA 2011 Heatsink specifically targets motherboards with a 56mm by 94mm mounting pattern. An incorrect socket match prevents the heatsink from mounting properly. Always verify your motherboard socket and mounting hole layout before you select a heatsink.
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Verify Processor TDP Ratings
You need to confirm that the rated wattage capacity matches or exceeds your processor TDP. Server workloads generate substantial heat, and units list specific thermal capacities ranging from 120W up to 400W. For high-output hardware, look for units built for higher power dissipation. The CTDOFUM 2U LGA4677 5-Heatpipe Cooler provides a listed 400W TDP capacity to handle demanding server processors. Selecting a model with insufficient wattage capacity leads to thermal throttling under load. Always cross-reference the manufacturer TDP rating of your CPU against the published thermal capacity of the heatsink before purchase.
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Check Heat Pipe Count
You should examine the number of integrated heat pipes to determine thermal conduction capability. Heat pipes transfer thermal energy directly from the base plate to the fin array. Models on this list feature configurations with four or five heat pipes. For modern multi-core processors with dense heat production, higher pipe counts assist with rapid heat transfer. The Boartechs 2U LGA4677 5-Heatpipe Server Cooler incorporates five heat pipes across its layout for modern enterprise sockets. Choosing a heatsink with multiple heat pipes helps distribute heat evenly across the available surface area in compact 2U server frames.
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Measure Vertical Chassis Clearance
You must verify the exact height of the cooler to ensure it fits underneath your 2U server chassis lid. A standard 2U chassis has strict height limitations, meaning a heatsink that is even slightly oversized will prevent the top cover from closing. Listed 2U models generally measure between 2.44 inches and 2.6 inches in height. For instance, the Dynatron 2U Active CPU Cooler lists a height of 2.6 inches to clear 2U server racks. Check the interior vertical clearance of your chassis and motherboard standoff height before picking your heatsink.
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Review Fan Speed Specifications
You should inspect the fan rotational speed and connector design when selecting an active 2U cooler. Compact server fans operate at high rotational velocities to push sufficient air through tightly packed cooling fins. For example, the Goshyda 2U Active LGA2011 Server Heatsink features an integrated fan rated at 8400 RPM to deliver high-velocity rack airflow. High-speed fans maintain lower CPU temperatures in dense multi-node enclosures, but they require proper fan header support on your motherboard. Verify whether your board provides a matching 4-pin connection to control and monitor the fan speed properly.
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Examine Base Material Construction
You should inspect the base material specifications to ensure effective heat absorption from the CPU heat spreader. Copper offers rapid thermal transfer directly at the contact point, while aluminum fins dissipate the heat. Some coolers combine these metals by placing a copper core directly over the processor die. The Dynatron 2U LGA 1700 Active Cooler uses an integrated copper core alongside aluminum components to absorb heat from 125-watt processors. Review whether a cooler uses an all-aluminum body or an embedded copper base to match the thermal demands of your specific processor.
Frequently asked questions
What physical height clearance do 2U server heatsinks require?
A 2U server chassis provides roughly 3.5 inches of total rack space, requiring coolers to sit well under that ceiling. Models like the Dynatron B13 measure approximately 2.6 inches in height, while the Dynatron Q10 stands at 2.44 inches. This height ensures sufficient clearance between the cooler and the server chassis lid for internal airflow.
Can you cool high-TDP enterprise processors in a 2U rack form factor?
Yes, modern 2U server coolers handle processors rated up to 400 watts depending on the socket and cooling layout. For instance, the CTDOFUM LGA4677 cooler dissipates up to 400W TDP using five heat pipes and a PWM fan. Additionally, active and passive Dynatron SP5 coolers support up to 320 watts for high-density AMD server hardware.
What fan speeds are standard for active 2U server heatsinks?
Active 2U coolers frequently utilize high-velocity fans to move sufficient air through compact fin arrays. For example, the Goshyda 2U Active LGA 2011 cooler features an 8400 RPM fan designed for rackmount setups. These elevated rotational speeds generate the static pressure necessary to maintain lower processor temperatures inside confined 2U chassis environments.
Does a 2U heatsink work with both AM4 and AM5 motherboard sockets?
Certain multi-generation coolers support both socket types when designed for standard AMD mounting layouts. The Dynatron 2U Passive heatsink lists compatibility across both AM4 and AM5 sockets with a 120-watt rating. Because passive models lack integrated fans, you must ensure your 2U rack chassis incorporates dedicated case fans to push air across the cooling fins.
What is the mounting pitch for LGA 2011 narrow server heatsinks?
LGA 2011 narrow ILM motherboards use a distinct 56mm by 94mm mounting pattern. Coolers like the CTDOFUM 2U Narrow LGA 2011 heatsink are built specifically for this footprint, delivering 150-watt dissipation across four heat pipes. You must always confirm whether your server motherboard requires a square ILM or narrow ILM mounting bracket before installation.
How many heat pipes are typical on heavy-duty 2U server coolers?
High-capacity 2U server coolers frequently incorporate five heat pipes to maximize thermal transfer within height constraints. Both the Boartechs 2U LGA4677 cooler and the Dynatron J10 active SP5 cooler utilize five integrated heat pipes. This design pulls heat rapidly from the processor base into the fin stack, allowing active fans or chassis airflow to exhaust it.
Do 2U server heatsinks come with pre-applied thermal compound?
Several 2U server heatsinks come with factory thermal paste already applied to the contact base. For example, the Dynatron B13 2U active cooler features pre-applied thermal compound directly from the factory. This simplifies rack assembly because you do not have to purchase, measure, or manually spread separate thermal paste onto your server processor.