KFXJMY 2U Passive LGA 2011 Alternatives: 6 Similar Picks Compared
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The KFXJMY 1pc 2U LGA narrow CPU cooler alternatives list helps you find replacements for this specific passive server heatsink. This original unit is designed for 2U server chassis and supports LGA 2011 Narrow sockets. It relies entirely on passive cooling, meaning it requires strong external airflow to dissipate heat effectively. The product data indicates it is a direct alternative to the SNK-P0048PS, fitting into tight server environments where space is limited.
You might look for other options if you need a different socket compatibility, such as LGA 4677 or LGA 4710. Some users may prefer an active cooler with integrated fans rather than relying on chassis airflow. Others might need a 1U form factor or a copper base for better thermal conductivity. We selected these alternatives because their specifications overlap with the original product. This ensures you can compare height, socket support, and cooling methods directly. The list includes passive and active options to match your specific server build requirements.
Our top pick: KFXJMY 2U Passive LGA 2011 Server Heatsink.
How each alternative compares
YQQEWI 2U LGA 2011 Passive Server Heatsink
The YQQEWI passive heatsink matches the KFXJMY in socket support and 2U form factor. It shares the same compact dimensions and passive cooling method. The main difference is weight. This unit weighs 1.76 ounces. The KFXJMY listing does not specify its weight. Both units are black and support LGA 2011. You should choose the YQQEWI if you want a known weight for your build. It is a solid alternative for silent server racks. The cooling performance will be similar since both are passive. It fits the same narrow socket requirements. Choose this if you prefer the YQQEWI brand or need the specific weight data.
ZDAVSFR 2U Passive LGA 2011 Heatsink
The ZDAVSFR heatsink is a direct passive alternative for 2U server builds. It supports the same LGA 2011 socket as the KFXJMY. Both units rely on existing chassis airflow for cooling. The ZDAVSFR is marketed as a premium option. It serves as a functional replacement for the SNK-P0048PS. The KFXJMY is also positioned as a replacement for that model. Both are black and passive. The ZDAVSFR does not list specific dimensions or weight in the provided data. You should pick this if you view it as a higher-tier passive solution. It offers the same core compatibility. The choice depends on your preference for the ZDAVSFR brand over KFXJMY.
Supermicro 2U Server Heatsink
The Supermicro heatsink is a heavy passive base for Xeon E5 servers. It supports LGA 2011 and fits 2U chassis. Unlike the KFXJMY, this unit weighs 10 pounds. The KFXJMY is much lighter, though its weight is not listed. Both are passive and require your own fans. The Supermicro unit is built for durability and heavy-duty server environments. You should buy this only if you need a robust passive heatsink. It is a budget-friendly option compared to others. The KFXJMY is more compact in description. Choose the Supermicro if you prioritize heavy construction and brand recognition. It is a solid passive base for LGA 2011 processors.
YQQEWI 2U Active Server Cooler
The YQQEWI active cooler differs significantly from the KFXJMY passive unit. It supports LGA4677 and LGA4710 sockets, not LGA 2011. It includes an active fan for cooling. The KFXJMY relies entirely on passive airflow. This YQQEWI unit is black and fits 2U chassis. It is designed for servers that need active cooling. You should pick this if your processor is not LGA 2011. It provides better cooling for higher heat loads. The KFXJMY is only for passive setups. This active unit is a different category of cooler. It is suitable for LGA4677 or LGA4710 builds. Choose it for active performance in 2U racks.
KFXJMY 2U 5 Heat Pipe Server Cooler
The KFXJMY 5-heat pipe cooler is an active solution for LGA4677 and LGA4710 sockets. It features five heat pipes and a fan. The original KFXJMY LGA 2011 unit is passive and lacks heat pipes. This active version is for different server platforms. It fits 2U chassis and includes RGB lighting. The passive LGA 2011 model also lists RGB. You should choose this active unit if you need more cooling power. It is better for higher heat loads. The passive LGA 2011 is only for low-power or well-ventilated servers. This active model is for LGA4677/4710 builds. It offers a different cooling method and socket support.
SilverStone 1U Passive Copper Server Heatsink
The SilverStone heatsink is designed for 1U chassis, not 2U. It supports LGA 2011 and 2066 sockets. It is made of copper, while the KFXJMY is black and likely aluminum. The SilverStone unit weighs 1.08 pounds. The KFXJMY is much smaller, measuring 0.39 inches in width, height, and length. This SilverStone model is for tight 1U rackmount environments. You should pick this if you have a 1U chassis. It is a passive solution requiring your own airflow. The KFXJMY is for 2U builds. Choose the SilverStone for 1U compatibility. It offers copper construction for potentially better heat dissipation in small spaces.
Quick picks
Our 7 picks
KFXJMY 2U Passive LGA 2011 Server Heatsink
Best for: 2U server builds with existing airflow
- Socket Compatibility
- LGA 2011 Narrow
- Server Height
- 2U
- Cooling Method
- Passive
- Compatible Device
- Server CPU
- Lighting
- RGB
- Color
- Black
View on Amazon: KFXJMY 2U Passive LGA 2011 Server Heatsink Affiliate link
This is a passive server heatsink designed for LGA 2011 Narrow sockets. It fits in 2U server chassis and requires external airflow for cooling. The unit is black and measures 0.39 inches in width, height, and length. It serves as a replacement for the Supermicro SNK-P0048PS. You need a server setup with strong case fans to move air through the fins.
Pros
- Passive cooling design eliminates fan noise
- Compatible with LGA 2011 Narrow sockets
- Fits standard 2U server form factors
- Direct replacement for SNK-P0048PS
Cons
- Requires external airflow to function
- No integrated fan included
- Dimensions listed as 0.39 inches are likely inaccurate
Good fit if
- You are building a 2U server
- You need a silent cooling solution
- You require LGA 2011 compatibility
Skip if
- You need a self-contained cooler
- You are using a desktop PC
- You cannot provide forced airflow
Verdict: KFXJMY 2U Passive LGA 2011 Cooler is a specialized passive heatsink for 2U servers using LGA 2011 Narrow sockets. It suits users who already have a chassis with high-static pressure fans to push air through the fins.
YQQEWI 2U LGA 2011 Passive Server Heatsink
Best for: Silent 2U server builds with existing airflow
- Socket Compatibility
- LGA 2011 Narrow
- Server Height
- 2U
- Cooling Method
- Passive
- Compatible Device
- Server CPU
- Lighting
- RGB
- Color
- Black
View on Amazon: YQQEWI 2U LGA 2011 Passive Server Heatsink Affiliate link
This passive server heatsink fits LGA 2011 narrow sockets. It uses a 2U form factor for low-profile server racks. The unit weighs 1.76 ounces and measures 0.39 inches in height. It requires existing case airflow for cooling. You should use it in servers that already have strong fans. It replaces the SNK-P0048PS model for compatible X9 boards.
Pros
- Passive cooling design eliminates fan noise
- Compatible with LGA 2011 narrow sockets
- Fits standard 2U server chassis height
- Lightweight at 1.76 ounces
Cons
- Passive design requires strong external airflow
- No included fan for active cooling
- Very small physical dimensions limit heat dissipation
Good fit if
- You need a silent cooling solution for a server
- You have a 2U chassis with good airflow
- You use an LGA 2011 narrow socket motherboard
Skip if
- You lack sufficient case fans for passive cooling
- You need active cooling for high TDP CPUs
- Your server chassis is not 2U compatible
Verdict: YQQEWI 2U Passive LGA 2011 Cooler works for servers that already have strong airflow. It fits narrow LGA 2011 boards in 2U racks. It does not cool high heat loads on its own.
ZDAVSFR 2U Passive LGA 2011 Heatsink
Best for: 2U server builds needing passive LGA 2011 cooling
- Socket Compatibility
- LGA 2011 Narrow
- Server Height
- 2U
- Cooling Method
- Passive
- Compatible Device
- Server CPU
- Lighting
- RGB
- Color
- Black
View on Amazon: ZDAVSFR 2U Passive LGA 2011 Heatsink Affiliate link
This ZDAVSFR unit is a passive server heatsink designed for LGA 2011 narrow sockets. It fits 2U server chassis and relies on case airflow for cooling. The build is black. It serves as a replacement for the Supermicro SNK-P0048PS. You need existing server fans to move air through the fins. It is not an active cooler with its own fan.
Pros
- Passive cooling design for silent operation
- Compatible with LGA 2011 narrow sockets
- Fits 2U server height constraints
- Direct replacement for SNK-P0048PS
Cons
- No integrated fan requires case airflow
- Limited to server-grade passive cooling
- Black finish only available
Good fit if
- You need a 2U passive heatsink for LGA 2011
- You are replacing a Supermicro SNK-P0048PS
- Your server chassis provides strong airflow
Skip if
- You require an active cooler with a built-in fan
- You are using a desktop ATX case
- You need RGB lighting for aesthetics
Verdict: ZDAVSFR 2U Passive LGA 2011 Cooler is a functional passive heatsink for server builds. It fits users who need a direct SNK-P0048PS alternative in a 2U chassis with adequate airflow.
Supermicro 2U Server Heatsink
Best for: passive cooling in 2U+ server builds
- Socket Compatibility
- LGA2011 or LGA1356
- Server Height
- 2U+
- Compatible Device
- intel Xeon E5-2600 and E5-2400 Series
- Mounting Type
- Screws & Springs
- System Type
- Server
- Weight
- 10 pounds
View on Amazon: Supermicro 2U Server Heatsink Affiliate link
This is a passive server heatsink designed for 2U+ chassis. It supports LGA2011 and LGA1356 sockets, fitting Intel Xeon E5-2600 and E5-2400 series processors. The unit mounts using screws and springs, including hardware for both square and narrow ILMs. It weighs 10 pounds. You need an active fan system to operate it. It suits servers requiring reliable passive cooling foundations.
Pros
- Supports LGA2011 and LGA1356 sockets
- Compatible with Intel Xeon E5-2600 and E5-2400 series
- Includes mounting hardware for narrow and square ILMs
- Fits 2U+ server chassis
Cons
- Passive design requires external fans for operation
- Heavy at 10 pounds
- No included PWM fan
Good fit if
- You need a passive heatsink for LGA2011 servers
- You are building a 2U+ chassis
- You already have suitable cooling fans
Skip if
- You need an all-in-one solution with fans
- You use consumer desktop sockets
- You require a lightweight component
Verdict: Supermicro 2U Passive LGA 2011 Heatsink is a heavy, passive base for Xeon E5 servers. You should buy it only if you have your own fans and need LGA2011 support.
YQQEWI 2U Active Server Cooler
Best for: LGA4677/LGA4710 2U server builds
- Socket Compatibility
- LGA4677, LGA4710
- Server Height
- 2U
- Cooling Method
- Active
- Compatible Device
- Server CPU
- Lighting
- RGB
- Color
- Black
View on Amazon: YQQEWI 2U Active Server Cooler Affiliate link
This is an active server CPU cooler designed for 2U chassis. It supports LGA4677 and LGA4710 sockets, making it suitable for specific server platforms. The unit features a black finish and includes RGB lighting. It uses a fan for active cooling rather than passive dissipation. You should choose this if you need a compact active solution for these specific server sockets in a tight 2U space.
Pros
- Active cooling method with fan
- Supports LGA4677 socket
- Supports LGA4710 socket
- Fits in 2U server height
- Includes RGB lighting
Cons
- Limited socket compatibility to LGA4677 and LGA4710 only
- Requires 2U chassis space
- RGB lighting may not be desired for all server builds
Good fit if
- You are building a server using LGA4677 or LGA4710 sockets
- You need active cooling in a 2U chassis
- You want RGB lighting for your server hardware
Skip if
- You are using a consumer desktop socket like LGA1700
- You require passive cooling without a fan
- You are limited to 1U chassis height
Verdict: YQQEWI 2U Active LGA4677/4710 Cooler is a specialized active solution for LGA4677 and LGA4710 server platforms. It fits well in 2U chassis where active cooling is required.
KFXJMY 2U 5 Heat Pipe Server Cooler
Best for: LGA4677/LGA4710 2U server cooling
- Socket Compatibility
- LGA4677, LGA4710
- Server Height
- 2U
- Compatible Device
- Server CPU
- Fan Size
- 6025MM
- Dimensions
- 0.39 x 0.39 x 0.39 inches
- Heat Pipes
- 5 Heat Pipes
View on Amazon: KFXJMY 2U 5 Heat Pipe Server Cooler Affiliate link
This KFXJMY cooler is a 2U server CPU heatsink designed for LGA4677 and LGA4710 sockets. It uses five heat pipes to transfer heat and includes a 6025mm PWM fan for active cooling. The unit measures 0.39 x 0.39 x 0.39 inches and is black. It suits server builds needing specific socket support and active fan cooling rather than passive dissipation.
Pros
- Five heat pipes for heat transfer
- Includes a 6025mm PWM fan
- Compatible with LGA4677 and LGA4710 sockets
- Fits in 2U server chassis
Cons
- Very small dimensions of 0.39 inches
- No RGB lighting despite attribute listing
- Limited socket compatibility to server types
Good fit if
- You need LGA4677 or LGA4710 support
- You require active 2U server cooling
- You want a fan-included heatsink
Skip if
- You use desktop consumer sockets
- You need passive cooling only
- You want RGB lighting effects
Verdict: KFXJMY 2U LGA4677 Server Cooler fits servers using LGA4677 or LGA4710 sockets that need active fan cooling in a 2U chassis.
SilverStone 1U Passive Copper Server Heatsink
Best for: 1U server chassis with LGA 2011
- Socket Compatibility
- LGA2011/2066
- Material
- Copper skived-fin and copper base
- Server Height
- 1U
- Cooling Method
- Passive
- System Type
- Server
- Dimensions
- 3.54 × 3.54 × 1.02 inches
View on Amazon: SilverStone 1U Passive Copper Server Heatsink Affiliate link
This SilverStone unit is a passive server heatsink designed for 1U rackmount chassis. It features a 26mm height with a copper base and skived fins. The cooler supports Intel LGA 2011 and LGA 2066 sockets. It relies on case airflow rather than a built-in fan. You need this for narrow server builds where height is restricted.
Pros
- 26mm ultra-slim profile fits 1U cases
- Copper skived-fin and base construction
- Compatible with LGA 2011 and 2066 sockets
- Passive design eliminates fan noise
Cons
- No included fan requires external airflow
- Limited to server-grade passive cooling
- Heavier at 1.08 pounds for its size
Good fit if
- You need a 1U rackmount server cooler
- You use LGA 2011 or 2066 CPUs
- You have strong case airflow fans
Skip if
- You need active cooling with a fan
- You use desktop LGA 1700 or AM5 sockets
- You want a quiet desktop PC without fans
Verdict: SilverStone 1U Passive LGA 2011 Copper Cooler is a specialized heatsink for 1U server chassis using LGA 2011 or 2066 processors. It suits builders who can provide their own airflow in a tight rackmount environment.
Specifications side by side
| Spec | KFXJMY 2U Passive LGA 2011 Server Heatsink | YQQEWI 2U LGA 2011 Passive Server Heatsink | ZDAVSFR 2U Passive LGA 2011 Heatsink | Supermicro 2U Server Heatsink | YQQEWI 2U Active Server Cooler | KFXJMY 2U 5 Heat Pipe Server Cooler | SilverStone 1U Passive Copper Server Heatsink |
|---|---|---|---|---|---|---|---|
| Socket Compatibility | LGA 2011 Narrow | LGA 2011 Narrow | LGA 2011 Narrow | LGA2011 or LGA1356 | LGA4677, LGA4710 | LGA4677, LGA4710 | LGA2011/2066 |
| Material | not stated | not stated | not stated | not stated | not stated | not stated | Copper skived-fin and copper base |
| Server Height | 2U | 2U | 2U | 2U+ | 2U | 2U | 1U |
| Cooling Method | Passive | Passive | Passive | not stated | Active | not stated | Passive |
| Compatible Device | Server CPU | Server CPU | Server CPU | intel Xeon E5-2600 and E5-2400 Series | Server CPU | Server CPU | not stated |
| Fan Size | not stated | not stated | not stated | not stated | not stated | 6025MM | not stated |
| Dimensions | not stated | not stated | not stated | not stated | not stated | 0.39 x 0.39 x 0.39 inches | not stated |
| Mounting Type | not stated | not stated | not stated | Screws & Springs | not stated | not stated | not stated |
| Heat Pipes | not stated | not stated | not stated | not stated | not stated | 5 Heat Pipes | not stated |
| Lighting | RGB | RGB | RGB | not stated | RGB | RGB | not stated |
| System Type | Server | Server | Server | Server | Server | Server | Server |
| Color | Black | Black | Black | not stated | Black | Black | 1U LGA2011/2066 Passive |
| Features | not stated | not stated | not stated | not stated | not stated | Fan | not stated |
| Weight | not stated | 1.76 ounces | not stated | 10 pounds | not stated | not stated | 1.08 pounds |
| Size | A-RGB | A-RGB | A-RGB | not stated | NO RGB | NO RGB | not stated |
| Model | KFXJMY | YQQEWI | not stated | NA | YQQEWI | KFXJMY | SST-XE01-2011 |
Readers of this guide also look at minorsonic aio CPU cooler alternatives.
Frequently asked questions
Does the KFXJMY 2U passive cooler include a fan?
No. This unit is a passive heatsink, meaning it has no built-in fans or active cooling components. It relies entirely on external airflow from your server chassis to move air through the fins. You must ensure your 2U server has adequate high-static pressure fans to push air across the cooler for it to function.
What sockets do these 2U alternatives support?
Most options in this list support the LGA 2011 socket. The KFXJMY, YQQEWI, ZDAVSFR, and Supermicro units are all compatible with LGA 2011. However, the YQQEWI active model and the KFXJMY 5 heat pipe variant support LGA4677 and LGA4710 sockets instead. Always verify your specific processor socket before purchasing.
Can I use these coolers in a 1U chassis?
Only if you select the SilverStone 1U Passive Copper Heatsink. The other six products, including the KFXJMY and YQQEWI models, are designed for 2U server heights. They will not fit in a 1U chassis. The SilverStone unit is the sole option listed that accommodates the tighter 1U form factor for LGA 2011 or 2066 processors.
Which option is the heaviest?
The Supermicro 2U Server Heatsink is the heaviest, weighing 10 pounds. This significant weight indicates a dense, passive base designed for high thermal mass. In contrast, the YQQEWI passive heatsink weighs only 1.76 ounces. The KFXJMY and other listed units do not specify their weight, so the Supermicro model is the clear heavy-duty choice.
Do these coolers have RGB lighting?
Most do, but not all. The KFXJMY 2U passive, YQQEWI passive, ZDAVSFR, YQQEWI active, and KFXJMY 5 heat pipe models all feature RGB or A-RGB lighting. However, the Supermicro heatsink and the SilverStone 1U copper unit do not list lighting attributes. The YQQEWI active model is explicitly marked as having no RGB size.
Is there an active cooling alternative to the passive KFXJMY?
Yes. The YQQEWI 2U Active Server Cooler and the KFXJMY 2U 5 Heat Pipe Server Cooler are active solutions. They include fans or heat pipes for forced airflow. These are suitable for LGA4677 and LGA4710 platforms. They differ from the passive KFXJMY, which requires your chassis fans to provide all the necessary cooling air.