Awxlumv 40mm Anodized Aluminum Heatsink vs Awxlumv 100x40x20mm Aluminum Heatsink 2-Pack: Spec Comparison
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
When comparing the awxlumv 4pcs anodized aluminium heat vs 2pcs aluminum heatsink 100, you face a choice between size and surface treatment. Both options use aluminum fins for passive cooling on electronic components. The primary difference lies in their physical footprint and finish. One kit provides four smaller units with an anodized surface, while the other offers two larger, untreated aluminum sinks. Your selection depends on the available space around your target component.
Key differences
| Aspect | Awxlumv 40mm Anodized Aluminum Heatsink 4-Pack | Awxlumv 100x40x20mm Aluminum Heatsink 2-Pack |
|---|---|---|
| Dimensions | 40 x 40 x 20mm | 100 x 40 x 20mm |
| Quantity | 4 pieces | 2 pieces |
| Surface Finish | Anodized aluminum | Aluminum |
| Weight | 41g per unit | 101g per unit |
| Compatible Devices | IC chip, NEMA17 stepper motors | Computer, CPU, Router, IC Board |
Which one should you choose?
Choose Awxlumv 40mm Anodized Aluminum Heatsink 4-Pack if
- You need to cool multiple small components like stepper motors or individual ICs.
- Your installation space is limited to a 40mm square area.
- You prefer a corrosion-resistant anodized surface finish.
Choose Awxlumv 100x40x20mm Aluminum Heatsink 2-Pack if
- You require a larger surface area for a single high-power component.
- You are cooling larger devices like routers or power adapters.
- You want a longer heatsink to cover more of a chip's surface.
Verdict: The 4-pack is ideal for distributing cooling across several small components or stepper motors. The 2-pack offers a larger footprint suitable for single, higher-power devices like CPUs or routers. Choose based on the size of the component you need to cool and the available space.
Size, Material, and Fit Comparison
Physical Dimensions
The Awxlumv 40mm Anodized Aluminum Heatsink 4-Pack measures 40 x 40 x 20mm. This compact footprint suits tight spaces or smaller components like NEMA17 stepper motors. The Awxlumv 100x40x20mm Aluminum Heatsink 2-Pack is significantly longer at 100 x 40 x 20mm. It offers more surface area for heat dissipation but requires more board space. You need to check your available clearance before choosing. The 100mm length is nearly three times the width of the 40mm option. This difference changes how you mount the unit on your PCB.
Material Finish
Product A uses anodized aluminum. The anodizing process creates a protective oxide layer on the surface. This can improve corrosion resistance and provide a smoother finish. Product B lists its material simply as aluminum. It does not specify an anodized finish in the provided data. For most passive cooling applications, both materials conduct heat effectively. However, the anodized surface on Product A might offer slight durability benefits in humid environments. If surface treatment matters for your specific use case, this is a key differentiator.
Included Quantity
You receive four heatsinks with Product A. This is useful if you need to cool multiple components, such as several voltage regulators or LED strips. You get two units with Product B. The larger size of Product B means each unit handles more heat, but you have fewer units overall. If your project requires cooling four separate ICs, Product A is the logical choice. If you only need to cool one or two high-power components, the two larger units in Product B may be sufficient. Consider the total number of components you need to manage.
Weight Specifications
Product A weighs 1.45 ounces per unit. The total weight for four units is approximately 5.8 ounces. Product B weighs 3.39 ounces per unit. The total weight for two units is 6.78 ounces. Product B is heavier per unit due to its larger mass of aluminum. The total weight difference is minimal. For most PCB applications, this weight difference is negligible. Both units are light enough that they do not require heavy-duty mounting hardware. The structural integrity of the board is not a concern for either option.
Compatible Devices
Product A is listed for IC chips, NEMA17 stepper motors, and TEC1-12706 coolers. It is also noted for VRM and 3D printer applications. Product B lists computer components, hard disks, routers, and power transistors. It specifically mentions CPU, MOSFET, and SCR compatibility. The larger surface area of Product B makes it better suited for higher heat output devices like CPUs or power adapters. Product A is better for lower heat density components like stepper motors or small ICs. Your specific component determines which compatibility list matters more.
Choose the Right Awxlumv Heatsink for You
You need multiple small heatsinks for tight spaces
This kit includes four 40x40x20mm units, giving you ample stock for multiple components. The anodized finish provides a smooth surface without burrs. Each unit weighs just 1.45 ounces, making them ideal for lightweight applications like NEMA17 stepper motors or small IC chips where space is limited.
You require maximum surface area for heat dissipation
This option offers a 100mm length, significantly increasing the fin surface area compared to the 40mm model. The 11-fin design helps dissipate more heat from high-power devices. At 3.39 ounces per pack, it is heavier but better suited for larger components like power transistors or voltage regulators that generate more thermal load.
You are building a 3D printer or similar device
The 40mm size is specifically noted for cooling NEMA17 stepper motors on printers like Creality or Ender 3. The compact 4-pack allows you to cool multiple motors or regulators simultaneously. The anodized aluminum construction ensures durability and effective passive cooling for these specific electronic components in confined printer enclosures.
You need to cool larger electronics like routers
The 100x40x20mm dimensions provide a larger base for devices such as routers, hard disks, or power adapters. The extended length allows for better airflow over the fins. This size is practical for mounting on broader components where the smaller 40mm heatsink would not provide sufficient coverage or thermal mass for effective cooling.
The products compared
Awxlumv 40mm Anodized Aluminum Heatsink 4-Pack
Best for: Cooling small electronic components
- Material
- Anodized aluminum
- Cooling Method
- passive cooling
- Compatible Device
- IC chip, NEMA17 stepper motors
- Dimensions
- 40 x 40 x 20mm
- Weight
- 1.45 ounces
View on Amazon: Awxlumv 40mm Anodized Aluminum Heatsink 4-Pack Affiliate link
This kit includes four 40x40x20mm anodized aluminum heatsinks designed for passive cooling. Each unit weighs 1.45 ounces and features a smooth surface to dissipate heat from small electronic components. You can mount these on IC chips, NEMA17 stepper motors, or LED regulators. The anodized finish helps with durability and heat transfer. This set is ideal for projects requiring multiple small cooling surfaces without active fans.
Pros
- Anodized aluminum material for passive cooling
- Compact 40x40x20mm dimensions
- Includes four units per package
- Smooth surface without burrs
Cons
- Limited to passive cooling only
- Small 40mm size restricts high-TDP use
- Thermal paste not included
Good fit if
- You need multiple small heatsinks for 3D printer motors
- You are cooling low-power IC chips or regulators
- You prefer passive cooling solutions
Skip if
- You require active fan cooling for high heat output
- You need a single large heatsink for a CPU
- You want thermal adhesive tape included
Verdict: Awxlumv 40mm Anodized Aluminum Heatsink 4-Pack is a practical solution for cooling small components like stepper motors or ICs. It suits builders who need four identical units for passive thermal management.
Awxlumv 100x40x20mm Aluminum Heatsink 2-Pack
Best for: High-power ICs and routers needing extra length
- Material
- Aluminium
- Compatible Device
- Computer, CPU, IC Board, Router, LED
- Dimensions
- 100mm x 40mm x 20mm
- Weight
- 3.39 ounces
View on Amazon: Awxlumv 100x40x20mm Aluminum Heatsink 2-Pack Affiliate link
This pack includes two 100 x 40 x 20mm aluminum heatsinks designed for high-power components. Each unit weighs 101g with a 4.2mm base thickness. The fins are 1.3mm thick, providing substantial surface area for heat diffusion. You can use these for CPU, router, or power adapter cooling. The larger 100mm length offers more dissipation area than standard 40mm blocks.
Pros
- 100mm length provides extended surface area
- 4.2mm base thickness for stability
- 101g weight per unit for mass
- Aluminum material for efficient conduction
- Pack includes two units
Cons
- 100mm length exceeds standard 40x40x20mm footprint
- No mounting hardware included in data
- Anodized finish not specified for this item
Good fit if
- You need extra cooling capacity for high-power ICs
- You have space for a 100mm long heatsink
- You want to cool multiple components with a 2-pack
Skip if
- You require a standard 40x40x20mm footprint
- You need anodized aluminum for corrosion resistance
- You are cooling a small CPU with limited space
Verdict: Awxlumv 100x40x20mm Aluminum Heatsink 2-Pack suits users needing larger surface area for power transistors or routers. It is not ideal for standard CPU slots requiring compact 40x40x20mm dimensions.
Specifications side by side
| Spec | Awxlumv 40mm Anodized Aluminum Heatsink 4-Pack | Awxlumv 100x40x20mm Aluminum Heatsink 2-Pack |
|---|---|---|
| Material | Anodized aluminum | Aluminium |
| Cooling Method | passive cooling | not stated |
| Compatible Device | IC chip, NEMA17 stepper motors | Computer, CPU, IC Board, Router, LED |
| Dimensions | 40 x 40 x 20mm | 100mm x 40mm x 20mm |
| Weight | 1.45 ounces | 3.39 ounces |
| Size | 40*40*20mm | 100 x 40 x 20mm |
| Color | 4Pcs | 100x40x20-2Pcs |
| Model | 40x40x20mm Heatsink | 20-40mm |
Frequently asked questions
Which heatsink is better for cooling VRM components on a 3D printer?
The 40mm Anodized Aluminum Heatsink 4-Pack is the better choice. It is explicitly listed as compatible with VRM and 3D printer components. Its compact 40x40x20mm size fits standard mounting spaces without obstructing moving parts. The included anodized finish helps with durability and heat dissipation in tight electronic enclosures.
Can I use the 100mm heatsink on a standard CPU slot?
No, this heatsink is not ideal for standard CPU slots. The 100x40x20mm model is designed for high-power ICs and routers that need extra length. Standard CPU slots typically require compact 40x40x20mm dimensions. Using the longer unit may cause clearance issues with nearby components or the case structure.
What is the weight difference between the two heatsink options?
The 40mm unit weighs 1.45 ounces, while the 100mm unit weighs 3.39 ounces. The longer heatsink is significantly heavier due to its increased aluminum mass. This difference matters if you are mounting multiple units or need to minimize load on delicate PCB traces or small brackets.
Does the 40mm heatsink come with an anodized finish?
Yes, the 40mm Anodized Aluminum Heatsink 4-Pack features an anodized finish. This surface treatment provides a smooth texture without burrs, which can be safer for handling. The finish also aids in passive thermal management by offering a consistent surface for heat transfer on small electronic components.
How many units are included in each pack?
The 40mm option comes in a 4-pack, providing four identical units. The 100mm option is sold as a 2-pack, containing two longer units. Choose the 4-pack if you need to cool multiple small components simultaneously. Select the 2-pack if you require larger surface area for fewer, higher-power devices.
Is the 100mm heatsink suitable for stepper motors?
It is not the most suitable choice. The 40mm heatsink is specifically noted for cooling stepper motors like NEMA17 types due to its compact footprint. The 100mm unit is better for high-power ICs or routers. Its extra length may not fit well on standard motor housings or nearby wiring.