Best Heatsinks for SP3 in 2026: 8 Picks Ranked by Specs
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Finding the right heatsink for SP3 requires balancing server chassis dimensions with thermal cooling requirements. The Dynatron 1U Passive Copper Heatsink takes the top position because its low 1-inch height and copper construction fit compact 1U server racks directly.
We compared 8 products based on the specifications published on the listings, focusing on physical dimensions, server height support, and cooling methods. This guide helps you decide which heatsink form factor matches your server chassis clearance and processor deployment.
Quick picks
The best fit for you
- You need passive cooling for a 1U server chassis Dynatron 1U Passive Copper Heatsink Its 1-inch height and passive copper construction fit 1U rackmount server enclosures.
- You need high TDP cooling for a 2U server Dynatron 2U SP3 Heatpipe Cooler Its 4-inch height and 280W TDP capacity fit 2U server cases.
- You need active cooling inside a 3U server chassis Dynatron 3U Socket SP3 Heatsink Fan Its 4.33-inch height and dedicated fan support 3U servers up to 280W TDP.
- You need liquid cooling for a 1U rackmount chassis Dynatron 1U AMD SP3 Liquid Cooler This all-in-one liquid cooler fits 1U servers and manages up to 280 watts.
Our 8 picks
Dynatron 1U Passive Copper Heatsink
Best for: 1U AMD EPYC rackmount servers
- Socket Compatibility
- SP3, Socket SP3 (what this guide is about)
- Material
- Copper 1100
- Server Height
- 1U
- Cooling Method
- Passive
- Compatible Device
- AMD EPYC
- Dimensions
- 4.4 × 3 × 1 inches
This heatsink is a 1U passive cooling solution built for AMD EPYC processors on Socket SP3. It measures 1 inch high, 3 inches wide, and 4.4 inches long, weighing 1.3 pounds. The design uses Copper 1100 with skived fins for heat transfer and includes pre-printed Shin-Etsu 7762 thermal grease. It suits you if you maintain high-density rack servers with existing chassis fan tunnels.
Pros
- Compact 1U profile measuring 1 inch in height
- Solid Copper 1100 skived-fin construction
- Factory-applied Shin-Etsu 7762 thermal grease
- Engineered specifically for AMD EPYC Socket SP3
Cons
- Passive design requires direct forced airflow from chassis fans
- No integrated fan included in the assembly
Good fit if
- You deploy hardware into a 1U server chassis.
- You run an AMD EPYC processor on Socket SP3.
- You have high-static-pressure fans installed in your chassis.
Skip if
- You need a standalone active cooler with its own fan attached.
- You assemble a desktop or tower system without directed internal server airflow.
Verdict: Dynatron 1U Passive Copper SP3 Heatsink provides high-density thermal management for 1U server chassis using pure copper skived fins. It delivers a direct-fit cooling surface for AMD EPYC processors that rely on dedicated server fans.
Dynatron 2U Active Aluminum SP3 Heatsink
Best for: 2U Socket SP3 server deployments
- Socket Compatibility
- SP3, Socket SP3 (what this guide is about)
- Material
- Aluminum
- Server Height
- 2U
- Cooling Method
- Active
- Compatible Device
- AMD EPYC
- Dimensions
- 5 × 4.5 × 6 inches
The Dynatron 2U Active Aluminum Heatsink is an active cooling unit built for AMD EPYC processors on Socket SP3. Designed for 2U server chassis, it combines an aluminum fin stack with an embedded heatpipe structure to handle thermal loads. Measuring 5 inches long, 4.5 inches wide, and 6 inches high, it fits compact rack installations. This heatsink suits you if you maintain 2U server enclosures requiring dedicated active airflow across an aluminum array.
Pros
- Embedded heatpipe design within aluminum heatsink
- Active cooling configuration for dedicated airflow
- Designed for 2U server height compatibility
- Socket SP3 support for AMD EPYC processors
Cons
- Aluminum construction rather than full copper
- Not compatible with 1U server chassis
Good fit if
- You need an active cooler tailored for a 2U server rack.
- You deploy an AMD EPYC processor on Socket SP3.
Skip if
- You need a low-profile heatsink for 1U server chassis.
- You require an all-copper heatsink or liquid cooling setup.
Verdict: Dynatron 2U Active Aluminum Heatsink provides active heatpipe cooling for Socket SP3 processors in standard 2U server builds. It delivers an aluminum cooling solution sized precisely for 2U rack dimensions.
Dynatron 1U Copper Vapor Chamber Server Heatsink
Best for: 1U AMD EPYC Socket SP3 rackmount servers
- Socket Compatibility
- SP3, Socket SP3 (what this guide is about)
- Material
- Copper 1100 with Skiving Fin
- Server Height
- 1U
- Compatible Device
- AMD EPYC
- Dimensions
- 120 x 82 x 27 mm
- System Type
- Server
View on Amazon: Dynatron 1U Copper Vapor Chamber Server Heatsink
This compact cooler provides a vapor chamber base paired with copper skived fins for AMD EPYC processors on Socket SP3. At 27 mm tall, it fits tightly into 1U server chassis configurations where vertical space remains strictly limited. You get pure copper heat dissipation designed for rackmount airflow. It suits your build if you run high-density enterprise servers requiring premium thermal conductivity within low-profile enclosures.
Pros
- Integrated vapor chamber base for heat transfer
- Pure Copper 1100 skived fin construction
- Low 27 mm height fits standard 1U server chassis
- Dedicated AMD EPYC Socket SP3 compatibility
Cons
- No integrated cooling fan included
- Weighs over 1 pound despite compact dimensions
Good fit if
- You need a low-profile heatsink under 28 mm for a 1U chassis
- You have high-velocity chassis fans to push air through dense skived fins
- You deploy an AMD EPYC processor on a Socket SP3 motherboard
Skip if
- You need a heatsink with an attached fan for standalone cooling
- You have a 2U or larger chassis that accommodates taller heatsinks
Verdict: Dynatron 1U Copper Vapor Chamber Heatsink delivers dense copper skived fins and a vapor chamber base built specifically for space-constrained 1U SP3 server nodes. It relies on direct server chassis airflow to maintain thermal performance in dense racks.
Dynatron Threadripper and EPYC CPU Cooler
Best for: 280W TDP AMD EPYC server builds
- Socket Compatibility
- SP3, Socket SP3 (what this guide is about)
- Material
- Aluminum
- Cooling Method
- Fan
- Compatible Device
- Threadripper and EPYC Processors
- Dimensions
- 4.7" x 3.2" x 4.3"
- Weight
- 1.65 pounds
This MITXPC active cooler is designed for AMD EPYC and Threadripper processors on the SP3 socket. It combines an aluminum heatsink with embedded heatpipes and an included fan to handle up to 280W TDP. Measuring 4.7 by 3.2 by 4.3 inches and weighing 1.65 pounds, it comes with pre-applied Shin-Etsu 7762 thermal grease. It suits you if you need a high-wattage air cooler for high-output server builds.
Pros
- Supports thermal loads up to 280W TDP
- Aluminum heatsink features embedded heatpipes and an integrated fan
- Pre-applied Shin-Etsu 7762 thermal grease saves setup time
- Broad socket support covering SP3, TR4, and sTRX4
Cons
- Stands 4.3 inches tall, requiring significant vertical chassis clearance
- Uses an aluminum heatsink body rather than all-copper construction
Good fit if
- You run a high-output processor rated up to 280W TDP.
- You want factory pre-applied Shin-Etsu 7762 thermal compound.
- You have a chassis with at least 4.3 inches of cooler clearance.
Skip if
- You need a low-profile heatsink under 4.3 inches in height.
- You require an all-copper heatsink design.
Verdict: MITXPC Socket SP3 Heatsink with Fan delivers high thermal capacity with its 280W TDP rating and embedded heatpipes. It is a solid choice if your chassis accommodates its 4.3-inch height.
Inter-Tech 1U AMD Copper Heatsink
Best for: compact 1U Socket SP3 server deployments
- Socket Compatibility
- SP3, Socket SP3 (what this guide is about)
- Material
- Copper
- Server Height
- 1U
- Dimensions
- 4.72 x 3.23 x 1.12 inches
- Features
- Fan
- Weight
- 1 pounds
This 1U active cooler features a copper heatsink paired with a vapor chamber base and an integrated blower fan. Operating at up to 8600 RPM with 26.25 CFM airflow, it handles processors with thermal ratings up to 225W TDP. It fits server chassis as low as 1.12 inches in height. You will find it suitable for compact Socket SP3 server builds that require dedicated active cooling.
Pros
- Supports processors up to 225W TDP
- Compact 1.12-inch height fits 1U server chassis
- Copper heatsink built with a vapor chamber base
- Integrated 8600 RPM blower fan delivers 26.25 CFM airflow
Cons
- Maximum blower fan speed reaches 8600 RPM
- Airflow tops out at 26.25 CFM under full duty cycle
Good fit if
- You need an active cooling unit inside a 1U server chassis.
- You use a Socket SP3 processor rated at or below 225W TDP.
- You want a vapor chamber base combined with copper cooling fins.
Skip if
- You run a processor requiring more than 225W TDP support.
- You need higher airflow than 26.25 CFM for high-heat chassis layouts.
Verdict: Dynatron 1U Copper Blower Heatsink provides active 225W TDP cooling with a vapor chamber base in a compact 1.12-inch profile. It serves 1U server setups using Socket SP3 that need high-RPM blower airflow.
Dynatron 2U SP3 Heatpipe Cooler
Best for: 2U rackmount servers needing 280W SP3 cooling
- Socket Compatibility
- SP3, Socket SP3 (what this guide is about)
- Material
- Aluminum
- Server Height
- 2U
- Dimensions
- 6 × 6 × 4 inches
- Weight
- 2 pounds
This Dynatron cooler fits AMD EPYC and Threadripper processors on Socket SP3. Built for 2U servers and larger chassis, it pairs an aluminum heatsink and heatpipes with a 4-pin PWM fan. The unit handles thermal loads up to 280 watts TDP while measuring 6 by 6 inches with a 4-inch height. You get direct active cooling designed specifically for high-wattage rackmount deployments.
Pros
- Supports up to 280W TDP
- 4-pin PWM controlled fan
- Aluminum heatsink with heatpipes
- Fits 2U server chassis and larger
Cons
- Height of 4 inches prevents use in 1U chassis
- Compatibility limited strictly to Socket SP3
Good fit if
- You run an AMD EPYC or Threadripper CPU on Socket SP3.
- You need active cooling rated for up to 280 watts TDP.
- You have a 2U or taller server rack enclosure.
Skip if
- You build inside a compact 1U server chassis.
- You require mounting support for sockets other than SP3.
Verdict: Dynatron 2U SP3 Heatpipe Cooler handles high-draw AMD EPYC and Threadripper hardware with its 280W TDP capacity and dedicated PWM fan. Its 4-inch height makes it a dependable match for 2U and larger server cases.
Dynatron 3U Socket SP3 Heatsink Fan
Best for: 3U socket SP3 servers needing active cooling
- Socket Compatibility
- SP3, Socket SP3 (what this guide is about)
- Material
- Aluminum
- Server Height
- 3U
- Dimensions
- 4.69" x 3.23" x 4.33"
- Features
- Fan
This active cooler pairs an aluminum heatsink with embedded heatpipes and a 4-pin PWM fan for AMD EPYC socket SP3 processors. Built for 3U server chassis and larger enclosures, it handles thermal loads up to 280 watts TDP. Its physical footprint measures 4.69 inches long, 3.23 inches wide, and 4.33 inches high. It suits you if you need dedicated active airflow for high-power socket SP3 server builds.
Pros
- Supports thermal loads up to 280W TDP
- Equipped with a 4-pin PWM controlled fan
- Aluminum heatsink construction with heatpipes
- Designed for 3U and larger server enclosures
Cons
- Height of 4.33 inches excludes 1U and 2U chassis
- Compatibility is limited exclusively to socket SP3
Good fit if
- You run an AMD EPYC processor on socket SP3 rated up to 280W TDP.
- You have a 3U or larger server chassis with at least 4.33 inches of vertical clearance.
- You want an integrated 4-pin PWM fan for direct active cooling.
Skip if
- You build inside a compact 1U or 2U server chassis.
- You use a motherboard with a CPU socket other than socket SP3.
Verdict: Dynatron 3U SP3 Aluminum Heatpipe Cooler delivers dedicated active cooling and a 280W TDP capacity for socket SP3 processors in 3U and larger servers. It provides heatpipe-assisted heat dissipation and PWM speed regulation within a 4.33-inch tall form factor.
Dynatron 1U AMD SP3 Liquid Cooler
Best for: high-TDP 1U rackmount SP3 servers
- Socket Compatibility
- SP3, Socket SP3 (what this guide is about)
- Server Height
- 1U
- System Type
- Server
- Dimensions
- 10 × 2.5 × 12 inches
This is an all-in-one liquid cooler built for 1U server chassis and larger enclosures. It fits socket SP3 along with sWRX8, sTRX4, and TR4 motherboards. The unit handles up to 280 watts of heat dissipation and includes pre-printed Shin-Etsu 7762 or equivalent thermal compound directly on the base. It suits you if you run high-wattage SP3 server processors inside slim rack mounts.
Pros
- Supports up to 280 watts of heat dissipation
- Fits 1U server chassis and larger enclosures
- Pre-printed Shin-Etsu 7762 or equivalent thermal compound
- Compatible with SP3, sWRX8, sTRX4, and TR4 sockets
Cons
- Dimensions require 10 inches by 12 inches of enclosure space
- Liquid cooling loop setup required instead of standard heatsink mounting
Good fit if
- You need 280-watt cooling capability inside a 1U server.
- You prefer factory pre-applied Shin-Etsu thermal paste.
- You build on an SP3, sWRX8, sTRX4, or TR4 motherboard.
Skip if
- You require an air-only or passive heatsink.
- You lack clearance for 10-inch by 12-inch cooler dimensions.
Verdict: Dynatron 1U All in One Liquid Cooler delivers 280-watt thermal management for SP3 server deployments in low-profile 1U racks.
Specifications side by side
| Spec | Dynatron 1U Passive Copper Heatsink | Dynatron 2U Active Aluminum SP3 Heatsink | Dynatron 1U Copper Vapor Chamber Server Heatsink | Dynatron Threadripper and EPYC CPU Cooler | Inter-Tech 1U AMD Copper Heatsink | Dynatron 2U SP3 Heatpipe Cooler | Dynatron 3U Socket SP3 Heatsink Fan | Dynatron 1U AMD SP3 Liquid Cooler |
|---|---|---|---|---|---|---|---|---|
| Socket Compatibility | SP3 | Socket SP3 | SP3 | sTRX4, TR4, SP3 | sWRX8, sTRX4, TR4, SP3 | Socket SP3 | Socket SP3 | sWRX8, sTRX4, TR4, SP3 |
| Material | Copper 1100 | Aluminum | Copper 1100 with Skiving Fin | Aluminum | Copper | Aluminum | Aluminum | not specified |
| Server Height | 1U | 2U | 1U | not specified | 1U | 2U | 3U | 1U |
| Cooling Method | Passive | Active | not specified | Fan | not specified | not specified | not specified | not specified |
| Compatible Device | AMD EPYC | AMD EPYC | AMD EPYC | Threadripper and EPYC Processors | not specified | not specified | not specified | not specified |
| Dimensions | not specified | not specified | 120 x 82 x 27 mm | 4.7" x 3.2" x 4.3" | 4.72 x 3.23 x 1.12 inches | not specified | 4.69" x 3.23" x 4.33" | not specified |
| System Type | not specified | not specified | Server | not specified | not specified | not specified | not specified | Server |
| Features | not specified | not specified | Vapor Chamber | Fan | Fan | not specified | Fan | not specified |
| Weight | 1.3 pounds | 1 pounds | 1.01 pounds | 1.65 pounds | 1 pounds | 2 pounds | not specified | not specified |
| Model | A25 | A26 | A28 | A39 | A41 | T17 | A50 | L29 |
| Color | not specified | not specified | not specified | not specified | not specified | not specified | not specified | Black |
How to Choose an SP3 Heatsink
-
Match Processor TDP Ratings
You must check the thermal design power of your AMD EPYC processor before choosing a heatsink. Processors running at higher power levels require coolers specifically rated for heavy thermal loads. For example, the Dynatron Threadripper and EPYC CPU Cooler provides a 280W TDP rating to ensure sustained heat dissipation under compute stress. If you run a lower-wattage processor, a lower TDP rating can meet your requirements without issue. Always verify that your CPU specification does not exceed the maximum wattage rating listed on the cooler spec sheet.
-
Evaluate Vapor Chamber Bases
You should look at the base structure of the heatsink to see if it includes a vapor chamber. A vapor chamber spreads concentrated thermal energy across the base plate faster than solid metal alone. This feature benefits dense enterprise systems where airflow space is restricted. The Dynatron 1U Copper Vapor Chamber Server Heatsink pairs a vapor chamber base with dense skived copper fins for rapid thermal transfer. Check the specification sheet for vapor chamber integration if your server workloads generate concentrated hot spots across the large SP3 integrated heat spreader.
-
Inspect Embedded Heatpipe Design
You need to examine whether a heatsink uses heatpipes to draw heat upward from the processor contact plate. Heatpipes transfer thermal energy into fin arrays efficiently, which helps active coolers disperse warmth under load. The Dynatron 2U SP3 Heatpipe Cooler uses embedded heatpipes alongside a dedicated PWM fan to handle 280W TDP processors. If your server operates continuous compute tasks, heatpipe-assisted designs move thermal energy away from the CPU package quickly. Verify that the heatpipe layout fits within your chassis enclosure without obstructing adjacent motherboard components or memory modules.
-
Compare Copper and Aluminum
You should evaluate whether copper or aluminum best matches your server weight and cooling requirements. Copper offers superior thermal conductivity for compact heatsinks, but it adds substantial mass to the motherboard. Aluminum fins reduce overall weight while delivering effective heat dissipation when paired with active airflow. The Dynatron 2U Active Aluminum SP3 Heatsink uses an aluminum build that keeps total weight at approximately one pound. If your server rack has strict weight limits or uses active fan airflow, aluminum provides a balanced option. Check the material specifications against your enclosure cooling design.
-
Choose Air or Liquid
You must decide between conventional heatsink assemblies and closed-loop liquid systems for Socket SP3 processors. Air heatsinks utilize direct chassis airflow or integrated fans to pull heat away from the CPU. Liquid setups route coolant through tubes to a radiator, relocating thermal dissipation away from the socket area. The Dynatron 1U AMD SP3 Liquid Cooler provides 280-watt cooling capability inside dense rackmount server nodes. If your server chassis supports internal radiator mounting and tubing runs, liquid cooling manages high-wattage processors effectively. Review your case layout dimensions before choosing a liquid cooling unit.
-
Check Integrated Fan Mechanics
You should inspect the fan type if you choose an actively cooled Socket SP3 heatsink. Server units utilize either axial fans or lateral blower fans to drive airflow through dense fin arrays. Lateral blowers exhaust air directly out of cramped enclosures, making them practical for tight rack environments. For example, the Inter-Tech 1U AMD Copper Heatsink integrates a dedicated blower fan to deliver 225W TDP cooling within an ultra-low profile. If your chassis lacks strong front-to-back system fans, an integrated fan ensures your processor receives dedicated air movement continuously.
Frequently asked questions
What is the difference between active and passive SP3 heatsinks?
Active heatsinks include an attached cooling fan or blower, while passive units rely entirely on your server chassis fans for airflow. For instance, the Dynatron A25 uses a purely passive skived copper fin array designed for forced chassis airflow. In contrast, the Dynatron A26 integrates an active cooling fan right onto the aluminum heatpipe assembly to push air across the cooling fins directly.
How does a vapor chamber base improve Socket SP3 cooling?
A vapor chamber spreads concentrated thermal energy across the heatsink base faster than solid metal alone. On high-density units like the Dynatron A28 or the Inter-Tech A41, the integrated vapor chamber moves heat immediately away from your processor into the copper fins. This rapid spreading helps prevent localized hotspots on large AMD EPYC packages, especially inside tight server enclosures where fin surface area is limited.
Can you fit an active heatsink with a fan inside a 1U chassis?
Yes, you can install an active cooler in 1U cases if it uses an integrated low-profile blower. The Inter-Tech A41 measures just 1.12 inches tall and includes a built-in fan alongside its vapor chamber base. This configuration provides dedicated 225W TDP cooling without exceeding the tight vertical limits of standard 1U rack enclosures, unlike taller upright tower coolers designed for 2U or 3U frames.
Which SP3 heatsinks support processors with a 280W TDP rating?
Multiple active heatsinks on this list handle 280W TDP loads directly. If you have a larger chassis, the MITXPC A39, Dynatron T17, and Dynatron A50 all feature heatpipes and fans engineered for 280W limits. For compact 1U server racks that require maximum thermal capacity, the Dynatron L29 all-in-one liquid cooler also provides dedicated 280W TDP heat dissipation within low-profile server hardware.
Why do some SP3 heatsinks use copper instead of aluminum?
Copper transfers heat significantly faster than aluminum, making it ideal for compact cooling designs. Models such as the Dynatron A25 and Dynatron A28 utilize solid copper construction to absorb and disperse thermal loads within minimal surface area. While copper makes heatsinks heavier—such as the Dynatron A25 weighing 1.3 pounds—the material delivers the thermal conductivity required when physical cooler clearance is strictly restricted.
How do you verify chassis clearance for taller SP3 coolers?
You must compare the published height specification of the cooler against the internal vertical clearance of your server case. For example, the Dynatron A50 measures 4.33 inches tall, requiring a 3U or larger chassis. Meanwhile, coolers like the Dynatron T17 sit at 4 inches tall to clear 2U server dimensions. Always check the distance between your motherboard socket surface and the chassis top cover.
Are Socket SP3 heatsinks compatible with AMD Threadripper CPUs?
Certain Socket SP3 coolers also support AMD Threadripper processors because they share physical socket mounting patterns and surface dimensions. For example, the MITXPC A39 cooler and Dynatron T17 cooler are specifically rated for both AMD EPYC and Threadripper configurations up to 280W TDP. You should always verify that your specific cooler lists compatibility for both platforms before installing it on a Threadripper motherboard.