Supermicro 1U Passive Server Heatsink vs Supermicro 1U LGA 2011 Heatsink: Spec Comparison
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This supermicro snk p0046p 1u passive CPU vs 1u heatsink cooling lga comparison helps you choose the right passive cooler for your server. Both units are 1U height passive heatsinks from Supermicro. They differ in socket support and physical size. The SNK-P0046P fits LGA115x sockets. The SNK-P0047PS supports LGA2011. You need to match the socket and server type to ensure compatibility.
Key differences
| Aspect | Supermicro 1U Passive Server Heatsink | Supermicro 1U LGA 2011 Heatsink |
|---|---|---|
| Socket Compatibility | LGA1150, LGA1155, LGA1156 | LGA2011 |
| Compatible Device | X8, X9 1U UP Servers | X9 1U UP, DP, MP, B9 10-Blade Servers |
| Processor Series | Intel Xeon X3400, E3-1200, Core i3 | Intel Xeon E5-2600 Series |
| Dimensions | 3.6 x 1.1 x 3.6 inches | 4.1 x 1.1 x 3.2 inches |
| Weight | 8 ounces | 0.7 kilograms |
| Mounting Type | Screw Spring, Mounting Bracket | Screws & Springs for Narrow ILM |
Which one should you choose?
Choose Supermicro 1U Passive Server Heatsink if
- You use LGA1150, LGA1155, or LGA1156 sockets in a 1U UP server.
- You need a lighter heatsink that weighs 8 ounces.
- Your system uses Intel Xeon E3-1200 or Core i3 processors.
Choose Supermicro 1U LGA 2011 Heatsink if
- You use the LGA2011 socket for Intel Xeon E5-2600 series processors.
- You operate X9 1U DP, MP, or B9 10-Blade servers.
- Your server chassis requires a heatsink with narrow ILM mounting springs.
Verdict: Choose the SNK-P0046P if you are upgrading older LGA115x systems. Choose the SNK-P0047PS for modern LGA2011 platforms and larger server form factors. Match the socket and server type exactly to avoid installation issues.
Socket and Size Comparison
Socket Compatibility
Socket support is the first major difference between these two passive heatsinks. The Supermicro 1U Passive Server Heatsink supports LGA1150, LGA1155, and LGA1156 sockets. It works with Intel Xeon X3400, E3-1200, and Core i3 series processors. The Supermicro 1U LGA 2011 Heatsink supports only the LGA2011 socket. It is designed for Intel Xeon E5-2600 series processors. You cannot use the LGA2011 cooler on older LGA115x boards. The LGA115x cooler cannot fit LGA2011 sockets. This distinction is critical for server compatibility. You must match the socket type exactly to ensure the mounting hardware fits correctly.
System Compatibility
The intended server systems differ between the two models. The Supermicro 1U Passive Server Heatsink is built for X8 and X9 1U UP servers. It uses a screw spring and mounting bracket for installation. The Supermicro 1U LGA 2011 Heatsink is designed for X9 1U UP, DP, MP, and B9 10-Blade servers. It uses screws and springs for narrow ILM. If you are upgrading a single-processor X8 server, the first option is the correct choice. The second option is better for more complex X9 configurations, including dual or multi-processor setups. Check your server manual to confirm the supported socket and chassis type before purchasing.
Physical Dimensions
Physical size varies slightly between the two heatsinks. The Supermicro 1U Passive Server Heatsink measures 3.6 inches in length, 3.6 inches in width, and 3.6 inches in height. It has a cubic footprint. The Supermicro 1U LGA 2011 Heatsink measures 4.1 inches in length, 1.1 inches in width, and 3.2 inches in height. It is longer but narrower and shorter. The LGA2011 model has a larger surface area due to its length. This may affect airflow in tight server racks. The LGA115x model is more compact in two dimensions. Ensure your server chassis has enough clearance for the specific length and width of the chosen cooler.
Weight
The weight of each heatsink differs significantly. The Supermicro 1U Passive Server Heatsink weighs 8 ounces. This is approximately 0.45 kilograms. The Supermicro 1U LGA 2011 Heatsink weighs 0.7 kilograms. This is roughly 24.7 ounces. The LGA2011 cooler is heavier, likely due to its larger surface area and different construction. Heavier heatsinks can provide better thermal mass for passive cooling. However, you must ensure your server motherboard can support the additional weight. The lighter LGA115x model may be easier to handle during installation. Both units are passive, so their weight is entirely from the metal fins and base.
Cooling Method
Both units use a passive cooling method. This means they rely on chassis airflow rather than built-in fans. The Supermicro 1U Passive Server Heatsink has no fans attached. It requires server fans to push air through its fins. The Supermicro 1U LGA 2011 Heatsink also uses passive cooling. It has no integrated fans. Both designs are quiet and reliable since there are no moving parts on the cooler itself. You must ensure your server has adequate airflow. The passive design reduces noise and power consumption. It is ideal for environments where silence and reliability are priorities. Check your server's fan curve to ensure sufficient air moves across the fins.
Choose your Supermicro heatsink today
Users with LGA1155 or LGA1150 CPUs
Select the Supermicro 1U Passive Server Heatsink if your server uses LGA1150 or LGA1155 sockets. This model supports LGA1156 as well. It fits Intel Xeon X3400 and E3-1200 series chips. The unit measures 3.6 by 1.1 by 3.6 inches. It includes a mounting bracket and spring screws for secure installation in 1U chassis.
Users with LGA2011 Xeon E5 processors
Choose the Supermicro 1U LGA 2011 Heatsink for LGA2011 socket compatibility. It is designed for Intel Xeon E5-2600 series processors. This cooler fits X9 and B9 10-Blade server platforms. The dimensions are 4.1 by 1.1 by 3.2 inches. It uses screws and springs for narrow ILM mounting, ensuring stability in dense server environments.
Admins needing lighter passive cooling
The Supermicro 1U Passive Server Heatsink weighs 8 ounces. This is significantly lighter than the LGA2011 model, which weighs 0.7 kilograms. If weight is a concern for your 1U server build, this lighter option reduces overall system mass. It still provides passive cooling for compatible LGA115x sockets without adding unnecessary bulk.
The products compared
Supermicro 1U Passive Server Heatsink
Best for: Silent 1U server cooling for LGA1155
- Socket Compatibility
- LGA1150, LGA1155, LGA1156
- Server Height
- 1U
- Cooling Method
- Passive
- Compatible Device
- X8, X9 1U UP Servers
- Dimensions
- 3.6 x 1.1 x 3.6 inches
- Mounting Type
- Screw Spring, Mounting Bracket
View on Amazon: Supermicro 1U Passive Server Heatsink Affiliate link
This Supermicro SNK-P0046P is a passive 1U heatsink designed for Intel LGA1150 and LGA1155 sockets. It measures 3.6 by 3.6 by 1.1 inches and weighs 8 ounces. The unit uses a screw spring and mounting bracket for installation. It fits X8 and X9 1U UP servers. You need this for systems requiring low-profile, fanless cooling for Xeon or Core i3 processors.
Pros
- Passive cooling method eliminates fan noise
- Supports LGA1150, LGA1155, and LGA1156 sockets
- Compact 1U form factor fits tight chassis
- Includes screw spring and mounting bracket
Cons
- No active fan for high heat loads
- Limited to LGA 115x socket family
- Requires specific server chassis compatibility
Good fit if
- You need silent operation for 1U servers
- You use LGA1155 or LGA1150 CPUs
- You have limited airflow in a rack
Skip if
- You require active fan cooling
- You use LGA2011 or newer sockets
- You need high thermal performance
Verdict: Supermicro 1U Passive Heatsink LGA1155 is a compact, silent solution for specific 1U servers using older Intel sockets. It fits users who prioritize low profile and zero noise over raw cooling power.
Supermicro 1U LGA 2011 Heatsink
Best for: 1U servers with Intel Xeon E5-2600
- Socket Compatibility
- LGA2011
- Server Height
- 1U
- Compatible Device
- Intel Xeon Processor E5-2600 Series
- Mounting Type
- Screws & Springs for Narrow ILM
- Dimensions
- 4.1 × 1.1 × 3.2 inches
- Weight
- 0.7 kilograms
View on Amazon: Supermicro 1U LGA 2011 Heatsink Affiliate link
This is a Supermicro 1U passive heatsink designed for LGA 2011 sockets. It supports Intel Xeon E5-2600 processors in X9 and B9 server chassis. The unit measures 4.1 by 3.2 by 1.1 inches and weighs 0.7 kilograms. It uses screws and springs for narrow ILM mounting. You need this if you are building or maintaining a 1U server with these specific requirements.
Pros
- Compatible with LGA 2011 sockets
- Fits in 1U server chassis
- Supports Intel Xeon E5-2600 series
- Includes screws and springs for narrow ILM
Cons
- Passive design requires strong case airflow
- Limited to LGA 2011 socket type
- Weighs 0.7 kilograms, adding chassis load
Good fit if
- You are using a 1U server chassis
- You have an Intel Xeon E5-2600 processor
- You need a passive cooling solution for LGA 2011
Skip if
- You use a socket other than LGA 2011
- You are building a standard desktop PC
- You need active fan cooling for high heat loads
Verdict: Supermicro 1U LGA 2011 Heatsink is a precise fit for 1U servers using Intel Xeon E5-2600 processors on LGA 2011 sockets. It provides passive cooling for specific enterprise builds.
Specifications side by side
| Spec | Supermicro 1U Passive Server Heatsink | Supermicro 1U LGA 2011 Heatsink |
|---|---|---|
| Socket Compatibility | LGA1150, LGA1155, LGA1156 | LGA2011 |
| Server Height | 1U | 1U |
| Cooling Method | Passive | not stated |
| Compatible Device | X8, X9 1U UP Servers | Intel Xeon Processor E5-2600 Series |
| Dimensions | 3.6 x 1.1 x 3.6 inches | not stated |
| Mounting Type | Screw Spring, Mounting Bracket | Screws & Springs for Narrow ILM |
| Weight | 8 ounces | 0.7 kilograms |
| Model | SNK-P0046P | SNK-P0047PS |
Frequently asked questions
Does the Supermicro 1U Passive Server Heatsink fit LGA 2011 sockets?
No, it does not. The SNK-P0046P model is designed specifically for LGA 1150 and LGA 1155 sockets. If you are using an Intel Xeon E5-2600 processor on an LGA 2011 socket, this cooler will not work. You need the SNK-P0047PS model for that socket type. These two heatsinks are not interchangeable due to their different socket compatibility.
What are the physical dimensions of the SNK-P0046P cooler?
The SNK-P0046P measures 3.6 inches in length and 3.6 inches in width. Its height is 1.1 inches. This compact footprint helps it fit within strict 1U server chassis limits. The unit weighs 8 ounces. These dimensions ensure it occupies minimal space while providing passive cooling for compatible LGA 1155 processors.
How wide is the Supermicro 1U LGA 2011 Heatsink?
The SNK-P0047PS model is 1.1 inches wide. It is also 4.1 inches long and 3.2 inches high. This rectangular shape is tailored for LGA 2011 socket layouts. The width remains consistent with the other model, but the length and height differ to accommodate the larger socket area and thermal requirements of Xeon E5-2600 series CPUs.
Which heatsink is heavier, the SNK-P0046P or SNK-P0047PS?
The SNK-P0047PS is significantly heavier. It weighs 0.7 kilograms. In comparison, the SNK-P0046P weighs only 8 ounces. The extra mass in the LGA 2011 model likely supports its larger surface area. This additional material helps dissipate heat from the more powerful Xeon processors it is designed to cool passively.
Can I use the SNK-P0046P for silent server operation?
Yes, it is designed for silent operation. This heatsink uses a passive cooling method, meaning it has no fans. It relies entirely on airflow through the server chassis and its aluminum fins to dissipate heat. This makes it ideal for environments where noise must be minimized, provided your server case provides adequate ventilation for passive cooling.
Is the SNK-P0047PS suitable for LGA 1155 processors?
No, it is not. The SNK-P0047PS is built exclusively for LGA 2011 sockets. It is intended for Intel Xeon E5-2600 series processors. It will not physically or electrically connect to LGA 1155 CPUs. You must select the SNK-P0046P if your server motherboard uses the LGA 1150 or LGA 1155 socket standard.
What is the height of both Supermicro 1U heatsinks?
Both heatsinks are designed for 1U server chassis, but their physical heights differ slightly. The SNK-P0046P is 1.1 inches tall. The SNK-P0047PS is also 1.1 inches wide but has a height of 3.2 inches. The term 1U refers to the maximum allowable height for the entire server unit, not the cooler itself. Both fit within standard 1U rackmount specifications.