UBJFMAC 2U LGA4677 5-Heatpipe Server Review: Specs, Pros and Cons

What stands out

• Five heat pipes for rapid heat transfer
• 400W TDP rating for heavy server loads
• Compatible with LGA4677 sockets (Gen 4 & 5)
• Compact 2U form factor for rack servers
• Available with E1A or E1B mounting brackets

Who it fits

Key specs for this server cooler

Heat Pipes: 5

Five heat pipes move heat away from the CPU core to the aluminum fins. This design spreads thermal load across a larger surface area, improving cooling efficiency. You should look for this count when comparing air coolers, as more pipes generally handle higher heat output better than models with fewer pipes.

TDP Rating: 400W

The cooler is rated for a Thermal Design Power of 400 watts. This indicates it can dissipate significant heat generated by high-performance server processors. When shopping, check this number against your CPU's power requirements to ensure the heatsink can handle the thermal load without overheating under sustained workloads.

Socket Compatibility: LGA4677

This unit fits only LGA4677 sockets, which are common in enterprise servers. It supports fourth and fifth generation CPUs for this socket type. You must verify your motherboard socket before buying, as this cooler will not fit standard desktop platforms like LGA1700 or AM5.

System Type: Server

This is built for server environments, not standard desktop PCs. Server coolers often prioritize airflow and durability over quiet operation. You should consider this factor if you are building a home lab or workstation, as server-grade fans may run louder than typical desktop air coolers.

Build Quality and Physical Design

According to the listing, this UBJFMAC cooler is built for 2U server chassis compatibility. The unit is finished in silver, which typically indicates an aluminum construction for the fins and base. This material choice helps dissipate heat quickly while keeping the overall weight manageable for dense server racks. The design centers around five copper heat pipes. These pipes are embedded directly into the base to draw heat away from the LGA4677 socket. This layout ensures that thermal energy spreads evenly across the fin stack rather than concentrating in one area. You will find this configuration useful for maintaining stable temperatures under heavy computational loads.

The product is available with specific mounting brackets to fit your hardware. You can choose between the E1A bracket, the E1B bracket, or the 4677-2UAF8 cooler variant. Each option ensures the heatsink sits securely on the motherboard without interfering with nearby components. The 2U height is a standard form factor for enterprise environments, allowing for proper airflow management within the rack. This size constraint means the fins are closely spaced but optimized for the high-speed PWM fans you install. This design prioritizes direct contact and efficient heat transfer over aesthetic flair. It is a utilitarian piece of hardware meant to solve a specific thermal problem in a constrained space. The silver finish also helps reflect radiant heat, adding a minor layer of protection for surrounding plastic parts. You should verify which bracket your server case requires before finalizing your selection.

Setup And Daily Use Guide

Installing this cooler requires matching your server chassis to the specific bracket configuration. The listing offers three distinct size options to ensure proper fit. You can choose between the E1A bracket, the E1B bracket, or the standalone 4677-2UAF8 cooler unit. Selecting the correct variant is critical because the mounting mechanism differs for each. Once you identify the right bracket for your server frame, you align the heatsink with the LGA4677 socket. The five heat pipes are internal components that transfer heat from the CPU base to the fin stack. You do not need to adjust these during installation. The unit is rated for a 400W TDP, which suggests it handles significant thermal loads typical of fourth and fifth-generation server processors. For daily operation, the cooler relies on high-speed PWM fans. You will need to connect these fans to your server’s motherboard or fan controller to receive variable speed signals. This allows the airflow to adjust based on real-time thermal demands. The silver finish indicates an aluminum construction, which provides durability in continuous server environments. Since this is a 2U form factor, it fits standard rack-mounted servers. You should verify that your server’s internal airflow supports the fan placement. Proper cable management for the PWM connectors ensures the cooling system operates efficiently without obstruction. The design prioritizes stability and thermal transfer over aesthetic customization, fitting the practical needs of data center or enterprise hardware maintenance.

Before You Buy This Server Cooler

You are looking at a specialized component for LGA4677 sockets, supporting fourth and fifth-generation CPUs. This unit is rated for 400W TDP, meaning you must ensure your server power delivery and airflow can handle that thermal load. The listing specifies five heat pipes, which helps manage heat in dense 2U chassis environments.

Before purchasing, verify your chassis supports the 2U form factor. You need to select the correct bracket option from the three available sizes: E1A, E1B, or the 4677-2UAF8 configuration. Mismatched brackets will prevent proper installation. This cooler is not for standard desktop PCs. It fits strictly within server racks. Check your motherboard’s CPU socket type carefully. If you need a solution for consumer desktops, look elsewhere in our guide for CPU Air Coolers & Thermal Paste. This product is for high-density data center or enterprise server builds only.

Check before you buy

• Confirm your server uses the LGA4677 socket.
• Verify your chassis supports the 2U height.
• Choose the correct bracket: E1A, E1B, or 4677-2UAF8.
• Ensure your system airflow handles 400W TDP.

The product at a glance

1

UBJFMAC 2U LGA4677 5-Heatpipe Server Cooler

Best for: 2U servers with LGA4677 400W CPUs

Socket Compatibility

LGA4677

Heat Pipes

5

TDP Rating

400W

System Type

Server

Server Height

2U

View on Amazon: UBJFMAC 2U LGA4677 5-Heatpipe Server Cooler Affiliate link

This UBJFMAC cooler is built for 2U server chassis and supports LGA4677 sockets for 4th and 5th Gen CPUs. It features five heat pipes and handles a 400W TDP rating. The unit includes a high-speed PWM fan for active cooling. You get a silver heatsink with an E1A bracket. It is designed for data centers needing reliable thermal management for high-power processors in compact server environments.

Pros

• Supports LGA4677 socket for 4th and 5th Gen CPUs
• Rated for 400W TDP to handle high-power processors
• Uses five heat pipes for efficient heat transfer
• Includes high-speed PWM fan for active cooling

Cons

• Limited to LGA4677 socket compatibility
• Requires 2U server chassis space
• Only available with E1A or E1B brackets

Good fit if

• You are building a 2U server with LGA4677 processors
• You need a 400W TDP rating for high-performance CPUs
• You require a silver heatsink with PWM fan control

Skip if

• You use desktop motherboards with ATX or micro-ATX form factors
• You need compatibility with LGA1700 or AM5 sockets
• You are looking for a low-noise consumer-grade cooler

Verdict: UBJFMAC 2U LGA4677 5-Heatpipe Cooler fits 2U server builds using LGA4677 sockets. It handles 400W TDP loads with five heat pipes and a PWM fan. Choose this for data center racks, not desktop PCs.

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Frequently asked questions

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