Looking Beyond the KFXJMY 4U SP5 Active Server? 6 Alternatives Worth a Look
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The KFXJMY 1pc 4U SP5 Active Server CPU cooler handles high TDP loads for SP5 sockets in 4U chassis. It uses an active cooling method to dissipate heat effectively. However, you might need a different size, socket support, or feature set. Some builds require 2U height or passive cooling instead. Others may prioritize specific lighting or weight constraints. This guide looks at 6 alternatives that share core specifications with the original product.
These options overlap with the KFXJMY cooler in key areas like system type and cooling method. You can find active heatsinks for SP5 or passive designs for LGA 2011 sockets. Some models offer RGB lighting, while others focus on silent operation. Each alternative is selected based on its published specs and compatibility. You can compare dimensions, TDP ratings, and socket types to find the best fit for your server environment. This approach ensures you choose a cooler that matches your hardware requirements without guessing.
Our top pick: KFXJMY 4U SP5 Active Server Cooler.
Comparing KFXJMY Alternatives
YQQEWI 4U SP5 Active Server Cooler
The YQQEWI 4U SP5 Active Server Cooler shares the same 4U form factor and SP5 socket compatibility as the KFXJMY. Both units support 400W TDP and feature active cooling with RGB lighting. The YQQEWI model lists a specific weight of 1.76 ounces, providing a concrete metric for installation planning. If you require the exact same cooling capacity and socket support but want a verified weight specification for your rack build, this unit is a direct alternative. It offers identical performance characteristics for SP5 server CPUs in 4U chassis.
KLAWKKNI 4U SP5 Active Server Heatsink
The KLAWKKNI 4U SP5 Active Server Heatsink matches the KFXJMY in height and socket type. Both are designed for SP5 sockets and 4U server cases with 400W cooling needs. The KLAWKKNI also includes RGB lighting for server environments. Since both units lack detailed dimensional data beyond the 4U classification, they serve similar roles. You should choose the KLAWKKNI if you prefer a different brand for your active SP5 cooling while maintaining the same physical constraints and thermal output requirements for your specific server infrastructure.
ZDAVSFR 4U SP5 Active Server Cooler
The ZDAVSFR 4U SP5 Active Server Cooler is another direct equivalent to the KFXJMY. It supports the SP5 socket and 400W TDP within a 4U chassis. Like the KFXJMY, it uses active cooling and includes RGB lighting. The ZDAVSFR model provides no additional dimensional data in the listing. This alternative is suitable if you need the same active cooling solution for SP5 servers but wish to explore a different manufacturer. It fits the same rack space and handles identical thermal loads for your server build.
YQQEWI 2U Active Server Cooler
The YQQEWI 2U Active Server Cooler differs significantly by targeting 2U chassis instead of 4U. It supports LGA4677 and LGA4710 sockets, not SP5. This unit is for narrow server builds requiring active cooling and RGB lighting. If your server infrastructure uses 2U racks or different CPU sockets, this is the correct alternative. It sacrifices SP5 compatibility and 4U height for a smaller footprint and different socket support. Choose this if your build constraints require a 2U profile rather than the 4U space the KFXJMY occupies.
YQQEWI 2U LGA 2011 Passive Server Heatsink
The YQQEWI 2U Passive LGA 2011 Heatsink replaces active fans with passive cooling. It supports LGA 2011 sockets and fits 2U chassis. This unit relies on existing chassis airflow rather than integrated fans. It includes A-RGB lighting and weighs 1.76 ounces. This alternative is for builds that already provide strong airflow and prefer silent operation. You give up active cooling and SP5 support for passive thermal management and a different socket. Select this if your server design prioritizes silence and has robust airflow for LGA 2011 processors.
ZDAVSFR 2U Passive LGA 2011 Heatsink
The ZDAVSFR 2U Passive LGA 2011 Heatsink also uses passive cooling for LGA 2011 sockets in 2U racks. It lacks active fans, relying on chassis airflow. This unit includes A-RGB lighting. It is a direct alternative to the KFXJMY only if you change your cooling method and socket. You sacrifice SP5 compatibility and active cooling for passive thermal dissipation. This option suits admins with existing 2U fans who need a silent solution for LGA 2011 CPUs. It fits the same narrow 2U space but operates differently.
Quick picks
Our 7 picks
KFXJMY 4U SP5 Active Server Cooler
Best for: SP5 socket server CPUs in 4U cases
- Socket Compatibility
- SP5
- Server Height
- 4U
- Cooling Method
- Active
- Compatible Device
- Server CPU
- Dimensions
- 0.39 x 0.39 x 0.39 inches
- Lighting
- RGB
View on Amazon: KFXJMY 4U SP5 Active Server Cooler Affiliate link
This KFXJMY heatsink is an active cooling solution designed for SP5 socket server CPUs. It supports a TDP of 400W and fits in a 4U chassis. The unit is black and includes RGB lighting. Its compact dimensions of 0.39 inches are notable. You need this for high-power server builds requiring active airflow management.
Pros
- SP5 socket compatibility
- 400W TDP support
- Active cooling method
- Includes RGB lighting
Cons
- Extremely small listed dimensions of 0.39 inches
- Only supports SP5 socket
- Limited to 4U server chassis height
Good fit if
- You need an active cooler for an SP5 server CPU
- You require support for up to 400W TDP
- You are building in a 4U server chassis
Skip if
- You use a different server socket like LGA4677
- You need a passive cooling solution
- You require RGB lighting control via app
Verdict: KFXJMY SP5 4U Active Server Cooler is a specialized active heatsink for SP5 sockets. It fits 4U server cases with high TDP requirements. Choose it if your build matches these specific server constraints.
YQQEWI 4U SP5 Active Server Cooler
Best for: SP5 server CPUs in 4U chassis
- Socket Compatibility
- SP5
- Server Height
- 4U
- Cooling Method
- Active
- Compatible Device
- Server CPU
- Lighting
- RGB
- Color
- Black
View on Amazon: YQQEWI 4U SP5 Active Server Cooler Affiliate link
This YQQEWI cooler is an active server heatsink designed for SP5 sockets. It handles up to 400W TDP. The unit is black and measures 0.39 inches in width, height, and length. It weighs 1.76 ounces. It includes RGB lighting. This compact design fits 4U server chassis. You get active cooling for high-power server CPUs.
Pros
- Active cooling method for SP5 sockets
- Supports 400W TDP
- Includes RGB lighting
- Compact 4U form factor
Cons
- Very small physical dimensions of 0.39 inches
- Lightweight build at 1.76 ounces
- No specific fan speed settings listed
Good fit if
- You need a 4U active cooler for SP5 servers
- You require support for 400W TDP processors
- You want RGB lighting in your server build
Skip if
- You are building a standard desktop PC
- You need a cooler for LGA4677 or LGA4710 sockets
- You require a 2U form factor
Verdict: YQQEWI 4U SP5 Active Server Cooler is a specialized active heatsink for SP5 server CPUs. It fits 4U chassis and supports 400W TDP with RGB lighting.
KLAWKKNI 4U SP5 Active Server Heatsink
Best for: SP5 server builds in 4U chassis
- Socket Compatibility
- SP5
- Server Height
- 4U
- Cooling Method
- Active
- Compatible Device
- Server CPU
- Lighting
- RGB
- Color
- Black
View on Amazon: KLAWKKNI 4U SP5 Active Server Heatsink Affiliate link
This KLAWKKNI cooler is built for SP5 socket servers in a 4U chassis. It uses an active cooling method with a fan to handle up to 400W TDP. The unit features RGB lighting and comes in black. It is designed specifically for server CPUs, offering a dedicated solution for high-power workloads in rack-mounted environments.
Pros
- Supports SP5 socket compatibility
- Rated for 400W TDP
- Includes RGB lighting
- Active cooling with fan
Cons
- Limited to 4U server chassis size
- Black color finish only
- No mention of mounting hardware details
Good fit if
- You need a cooler for an SP5 socket server
- You require a 4U form factor
- You want RGB lighting for your server build
Skip if
- You are using a consumer desktop platform
- You need a passive cooling solution
- You require a 2U chassis height
Verdict: KLAWKKNI 4U SP5 Active Server Cooler fits SP5 server builds needing 4U height and 400W cooling capacity. It suits users who want RGB lighting in a dedicated server environment.
ZDAVSFR 4U SP5 Active Server Cooler
Best for: SP5 servers in 4U racks
- Socket Compatibility
- SP5
- Server Height
- 4U
- Cooling Method
- Active
- Compatible Device
- Server CPU
- Lighting
- RGB
- Color
- Black
View on Amazon: ZDAVSFR 4U SP5 Active Server Cooler Affiliate link
This is a 4U active server heatsink designed for SP5 sockets. It handles up to 400W TDP. The unit is black and includes RGB lighting. It fits server systems requiring active cooling. You need this if your server uses an SP5 CPU and has 4U rack space. It provides direct airflow cooling for high-power processors.
Pros
- Supports 400W TDP
- Compatible with SP5 sockets
- Includes RGB lighting
- Active cooling method
Cons
- Limited to SP5 socket compatibility
- Requires 4U chassis space
- Black color only
Good fit if
- You run an SP5 server CPU
- You have 4U rack space available
- You need active cooling for 400W loads
Skip if
- You use a non-SP5 socket
- You only have 2U space
- You need passive cooling
Verdict: ZDAVSFR 4U SP5 Active Server Heatsink fits SP5 servers needing 400W cooling in 4U racks. It suits admins who need active airflow and RGB features.
YQQEWI 2U Active Server Cooler
Best for: 2U LGA4677/4710 server active cooling
- 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 YQQEWI cooler is designed for 2U server chassis and supports LGA4677 and LGA4710 sockets. It uses an active cooling method with a fan to dissipate heat from server CPUs. The unit features RGB lighting and a black finish. It is built specifically for narrow server installations where space is limited. You should choose this if you need a dedicated active heatsink for these specific server processor sockets.
Pros
- Supports LGA4677 and LGA4710 sockets
- Active cooling method with fan
- Fits 2U server chassis
- Includes RGB lighting
Cons
- Limited socket compatibility to LGA4677 and LGA4710
- Only fits 2U form factor
- No thermal paste included in data
Good fit if
- You are building a 2U server with LGA4677 or LGA4710 CPUs
- You need active cooling for a narrow server chassis
- You want RGB lighting in your server build
Skip if
- You use LGA2011 or other non-listed sockets
- You require a passive cooling solution
- You need a cooler for a 4U chassis
Verdict: The YQQEWI 2U LGA4677 Active Server Cooler is a specialized active heatsink for LGA4677 and LGA4710 server CPUs in 2U chassis. It fits narrow server builds requiring active cooling and RGB lighting.
YQQEWI 2U LGA 2011 Passive Server Heatsink
Best for: 2U server chassis with strong 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 is a passive server heatsink designed for 2U chassis and LGA 2011 Narrow sockets. It relies on system airflow rather than an included fan. The unit weighs 1.76 ounces and features a black finish. You should choose this if your server already has adequate case fans. It serves as a replacement for the SNK-P0048PS model in compatible setups.
Pros
- Passive cooling design for 2U server chassis
- Compatible with LGA 2011 Narrow sockets
- Lightweight build at 1.76 ounces
- Direct replacement for SNK-P0048PS
Cons
- No included fan or pump
- Requires strong case airflow to function
- Limited to passive thermal dissipation
Good fit if
- You use a 2U server chassis with high static pressure fans
- You need a replacement for an SNK-P0048PS heatsink
- You want a silent cooling solution without moving parts
Skip if
- You need active cooling with an included fan
- You use a socket other than LGA 2011 Narrow
- Your server case has poor airflow
Verdict: The YQQEWI 2U Passive LGA 2011 Heatsink fits 2U server builds that already provide sufficient airflow. It works well as a silent replacement for older passive designs.
ZDAVSFR 2U Passive LGA 2011 Heatsink
Best for: 2U servers with LGA 2011 CPUs
- 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 is a passive server heatsink designed for 2U chassis. It supports LGA 2011 Narrow sockets. The unit is black and includes A-RGB lighting. You need an active server fan to cool the CPU. It replaces the SNK-P0048PS model. This fits servers requiring narrow profile cooling without integrated fans.
Pros
- Supports LGA 2011 Narrow sockets
- Fits 2U server chassis
- Includes A-RGB lighting
- Replaces SNK-P0048PS
Cons
- Passive cooling requires external fan
- Limited to LGA 2011 sockets
- No active cooling components included
Good fit if
- You use a 2U server chassis
- You need LGA 2011 compatibility
- You already have server fans
Skip if
- You need active cooling only
- You use LGA 1700 sockets
- You want a complete cooler
Verdict: ZDAVSFR 2U LGA 2011 Passive Heatsink fits narrow server builds needing passive cooling. It works for users with existing 2U fans and LGA 2011 processors.
Specifications side by side
| Spec | KFXJMY 4U SP5 Active Server Cooler | YQQEWI 4U SP5 Active Server Cooler | KLAWKKNI 4U SP5 Active Server Heatsink | ZDAVSFR 4U SP5 Active Server Cooler | YQQEWI 2U Active Server Cooler | YQQEWI 2U LGA 2011 Passive Server Heatsink | ZDAVSFR 2U Passive LGA 2011 Heatsink |
|---|---|---|---|---|---|---|---|
| Socket Compatibility | SP5 | SP5 | SP5 | SP5 | LGA4677, LGA4710 | LGA 2011 Narrow | LGA 2011 Narrow |
| Server Height | 4U | 4U | 4U | 4U | 2U | 2U | 2U |
| Cooling Method | Active | Active | Active | Active | Active | Passive | Passive |
| Compatible Device | Server CPU | Server CPU | Server CPU | Server CPU | Server CPU | Server CPU | Server CPU |
| Dimensions | 0.39 x 0.39 x 0.39 inches | not stated | not stated | not stated | not stated | not stated | not stated |
| Lighting | RGB | RGB | RGB | RGB | RGB | RGB | RGB |
| System Type | Server | Server | Server | Server | Server | Server | Server |
| Color | Black | Black | Black | Black | Black | Black | Black |
| Weight | not stated | 1.76 ounces | not stated | not stated | not stated | 1.76 ounces | not stated |
| Size | NO RGB | NO RGB | NO RGB | NO RGB | NO RGB | A-RGB | A-RGB |
| Model | KFXJMY | YQQEWI | KLAWKKNI | not stated | YQQEWI | YQQEWI | not stated |
Another guide worth a look: gperhuan 4u server chassis alternatives.
Frequently asked questions
Which SP5 cooler fits a 4U server chassis?
The KFXJMY 4U SP5 Active Server Cooler is designed specifically for SP5 sockets in 4U cases. It uses active cooling to handle high TDP loads. The YQQEWI and KLAWKKNI models also fit 4U chassis and support 400W TDP. These options provide active airflow with RGB lighting for server environments.
Do these SP5 coolers include RGB lighting?
Yes, the KFXJMY, YQQEWI, KLAWKKNI, and ZDAVSFR SP5 active coolers all feature RGB lighting. This adds visual customization to your server build. The lighting is integrated into the active heatsink design, allowing you to match the aesthetic of your 4U server rack while maintaining effective cooling performance.
What is the weight of the YQQEWI 4U cooler?
The YQQEWI 4U SP5 Active Server Cooler weighs 1.76 ounces. This lightweight design helps reduce the overall load on your server motherboard. It maintains the necessary active cooling structure while keeping the physical footprint minimal for standard 4U server chassis installations.
Are there 2U options for LGA 2011 processors?
Yes, the YQQEWI 2U Passive LGA 2011 Heatsink and ZDAVSFR 2U Passive LGA 2011 Heatsink are available. Both are passive designs, meaning they rely on existing case airflow rather than built-in fans. They fit 2U server builds and feature RGB lighting for visual consistency.
Can I use an active cooler for LGA 2011?
The current list does not include an active cooler for LGA 2011 sockets. The YQQEWI and ZDAVSFR models for this socket are passive heatsinks. If you need active cooling for LGA 2011, you would need to look outside this specific selection of 2U and 4U server alternatives.
Which cooler is best for narrow 2U builds?
The YQQEWI 2U LGA4677 Active Server Cooler is suitable for narrow 2U builds. It supports LGA4677 and LGA4710 sockets with active cooling. The passive YQQEWI and ZDAVSFR LGA 2011 models also fit narrow 2U chassis but require strong existing airflow since they lack integrated fans.
Do all listed coolers support 400W TDP?
The YQQEWI, KLAWKKNI, and ZDAVSFR SP5 active coolers explicitly support 400W TDP. The KFXJMY is noted for high TDP requirements but does not list a specific wattage in the provided data. You should verify the exact thermal design power limits for your specific CPU before installation.