Waveshare Raspberry Pi Compute Module vs Waveshare Compute Module 4 Heatsink (2026): Key Differences
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This guide compares the waveshare raspberry pi compute module vs cm4 series options for your next small form factor project. Both units share the same BCM2711 quad-core processor, delivering consistent performance for compact builds. The primary difference lies in their configuration and connectivity. One model focuses on a lightweight, wireless setup with minimal storage. The other includes a heatsink and adds wired networking capabilities. You need to decide which hardware balance fits your specific application requirements.
Key differences
| Aspect | Waveshare Raspberry Pi Compute Module 4 Lite | Waveshare Compute Module 4 with Heatsink |
|---|---|---|
| Processor | BCM2711, quad-core Cortex-A72 | BCM2711, quad-core Cortex-A72 |
| RAM | 2GB | not listed |
| Storage | 0GB (Lite) eMMC Flash | not listed |
| Networking | WiFi | Gigabit Ethernet |
| Cooling | not listed | Includes heatsink |
| Weight | 3.53 ounces | 2.08 ounces |
Which one should you choose?
Choose Waveshare Raspberry Pi Compute Module 4 Lite if
- You require a lightweight, wireless-only solution for space-constrained projects
- You need 2GB of RAM and do not require onboard storage
- You prefer a setup that relies on WiFi connectivity rather than wired networks
Choose Waveshare Compute Module 4 with Heatsink if
- You need stable Gigabit Ethernet for network-dependent applications
- You want the included heatsink to manage thermal output passively
- You prioritize a lower weight profile for your build
Verdict: Choose the Lite model if you need a wireless, RAM-focused compute module without storage. Pick the Heatsink version if you require wired Gigabit Ethernet and passive cooling. Both share the same processor core for comparable processing power.
CM4 Lite vs Heatsink Module
processor performance
Both the Waveshare Raspberry Pi Compute Module 4 Lite and the Waveshare Compute Module 4 with Heatsink use the same BCM2711 system-on-chip. This quad-core Cortex-A72 processor delivers 64-bit performance suitable for various small form factor projects. Since the silicon is identical, you will see no difference in raw computational power between the two units. The CPU handles tasks at the same speed regardless of which board you choose. This consistency ensures that your application performance remains stable across both options. You can rely on the same processing capabilities for data compilation or general computing tasks with either device.
memory capacity
The Waveshare Raspberry Pi Compute Module 4 Lite includes 2GB of RAM. The Waveshare Compute Module 4 with Heatsink does not list its RAM capacity in the provided specifications. While the CM4 series generally offers options ranging from 1GB to 8GB, the specific amount for the heatsink model is unknown. If you require a confirmed 2GB of memory, the Lite model provides this clearly. For the heatsink version, you would need to verify the exact RAM size elsewhere. This difference in documentation clarity matters if you need to ensure sufficient memory for your specific workload immediately.
storage options
The Waveshare Raspberry Pi Compute Module 4 Lite comes with 0GB of eMMC flash storage, labeled as Lite. This means you must rely on external storage media like SD cards for your operating system and data. The Waveshare Compute Module 4 with Heatsink does not specify its internal storage capacity in the data provided. Both models feature faster eMMC flash technology capable of up to 100 MBytes/s data rates, which is four times faster than previous generations. However, without knowing the storage size of the heatsink model, you cannot compare their internal storage capabilities directly. The Lite model explicitly lacks internal flash.
cooling solution
The Waveshare Compute Module 4 with Heatsink includes an official heatsink as part of its package. This component helps dissipate heat generated by the BCM2711 processor during operation. The Waveshare Raspberry Pi Compute Module 4 Lite does not mention any included cooling hardware in its specifications. Passive cooling via a heatsink is beneficial for maintaining stable performance in enclosed small form factor cases. If you plan to run the device in a tight space without active airflow, the heatsink model offers a clear advantage in thermal management. The Lite model requires you to source cooling separately.
network connectivity
The Waveshare Raspberry Pi Compute Module 4 Lite features onboard WiFi connectivity. The Waveshare Compute Module 4 with Heatsink includes Gigabit Ethernet support via a new PHY chip that supports IEEE1588. This makes it suitable for precise network applications. The Lite model does not list Gigabit Ethernet in its key specs. If you need wired network stability and precision timing protocols, the heatsink model is the better choice. The Lite model provides wireless convenience but lacks the specified wired networking features. You should choose based on whether you prioritize WiFi flexibility or Gigabit Ethernet reliability.
physical dimensions
The Waveshare Raspberry Pi Compute Module 4 Lite has specific dimensions of 2.17 inches in length, 0.39 inches in width, and 0.19 inches in height. The Waveshare Compute Module 4 with Heatsink is described only as compact without exact measurements. The Lite model weighs 3.53 ounces, while the heatsink model weighs 2.08 ounces. The weight difference likely stems from the included heatsink and packaging variations. For precise enclosure design, the Lite model offers concrete measurements. The heatsink model requires you to estimate space requirements due to the lack of specific size data in the provided information.
Which Waveshare CM4 fits your needs
Users needing RAM and wireless connectivity
This model includes 2GB of RAM and built-in WiFi. It uses the BCM2711 processor for solid performance. The 0GB eMMC storage keeps costs lower. You get the same quad-core Cortex-A72 chip as the other option. This choice suits projects requiring memory and wireless features without extra cables.
Industrial network or PCIe expansion needs
This version features Gigabit Ethernet with IEEE1588 support for precise network timing. It adds a PCIe Gen 2 x1 interface for extra modules. The heatsink helps manage thermal loads during sustained workloads. You gain stable B to B connectors and onboard PHY support. It is ideal for industrial or network-focused builds.
Developers wanting the complete hardware package
This package includes the official CM4101000 module along with an antenna and heatsink. The heatsink ensures the BCM2711 processor stays cool. You receive the necessary accessories for immediate deployment. The compact design fits easily into small enclosures. This option saves you from sourcing separate thermal and antenna components.
The products compared
Waveshare Raspberry Pi Compute Module 4 Lite
Best for: Compact WiFi projects needing no local storage
- Processor
- BCM2711, quad-core Cortex-A72
- RAM Capacity
- 2GB
- Storage
- 0GB (Lite) eMMC Flash
- Wireless Connectivity
- WiFi
- Memory
- 2GB RAM
- Dimensions
- 2.17 × 0.39 × 0.19 inches
View on Amazon: Waveshare Raspberry Pi Compute Module 4 Lite Affiliate link
This Waveshare Compute Module 4 uses the BCM2711 quad-core processor for solid performance in a compact form factor. It includes 2GB of RAM and 0GB of eMMC flash storage, making it a lightweight option for specific projects. The module supports WiFi connectivity, which is useful for networked applications. Its small dimensions allow it to fit into tight spaces where standard boards will not. You should consider this if you need a reliable, small-scale computing solution.
Pros
- BCM2711 quad-core Cortex-A72 processor
- 2GB RAM capacity
- WiFi wireless connectivity
- Compact 2.17 x 0.39 x 0.19 inch size
Cons
- 0GB eMMC flash storage limits offline data retention
- No Bluetooth connectivity listed in specifications
- 2GB RAM may be insufficient for heavy multitasking
Good fit if
- You need a compact module for industrial IoT projects
- You require WiFi connectivity without external adapters
- You are building a lightweight embedded system
Skip if
- You need built-in storage for the operating system
- You require Bluetooth for peripheral connections
- You need more than 2GB of RAM for your workload
Verdict: Waveshare CM4 2GB RAM 0GB eMMC is a practical choice for developers who need a small, WiFi-enabled module with a powerful processor but do not require local storage or Bluetooth.
Waveshare Compute Module 4 with Heatsink
Best for: network-focused embedded projects
- Processor
- BCM2711, quad-core Cortex-A72
- RAM Capacity
- 1GB
- Storage
- 0GB eMMC FLASH
- Ethernet
- Gigabit Ethernet PHY
- Wireless Connectivity
- Wireless
- Weight
- 2.08 ounces
View on Amazon: Waveshare Compute Module 4 with Heatsink Affiliate link
This Waveshare compute module pairs the BCM2711 quad-core processor with a heatsink. It uses an upgraded eMMC for faster data rates and a stable B-to-B connector. The onboard Gigabit Ethernet supports IEEE1588 for network tasks. It is a compact, black unit weighing 2.08 ounces. This setup suits users who need reliable processing power in a small form factor for specialized projects.
Pros
- BCM2711 quad-core Cortex-A72 processor
- Upgraded eMMC with 100 MBytes/s data rate
- Stable B-to-B connectors
- Onboard Gigabit Ethernet with IEEE1588 support
Cons
- Requires separate carrier board
- No built-in display output
- Limited to PCIe Gen 2 x1 interface
Good fit if
- You need a compact compute module for network applications
- You want faster eMMC storage than older modules
- You prefer stable B-to-B connectors over edge fingers
Skip if
- You need a complete computer with a display
- You require PCIe Gen 3 speeds
- You want a plug-and-play desktop experience
Verdict: Waveshare CM4 Heatsink is a solid choice for developers building network-focused embedded systems. It delivers strong processing in a small package for those who can manage the carrier board setup.
Specifications side by side
| Spec | Waveshare Raspberry Pi Compute Module 4 Lite | Waveshare Compute Module 4 with Heatsink |
|---|---|---|
| Processor | BCM2711, quad-core Cortex-A72 | BCM2711, quad-core Cortex-A72 |
| RAM Capacity | 2GB | 1GB |
| Storage | 0GB (Lite) eMMC Flash | 0GB eMMC FLASH |
| Ethernet | not stated | Gigabit Ethernet PHY |
| Wireless Connectivity | WiFi | Wireless |
| Memory | 2GB RAM | not stated |
| Dimensions | 2.17 × 0.39 × 0.19 inches | not stated |
| Weight | 3.53 ounces | 2.08 ounces |
| Color | 2GB RAM-0GB (Lite) with WIFI | Black |
| Model | CM4102000 | CM4101000 Package A |
| Size | not stated | Compact |
Frequently asked questions
Does the Waveshare Compute Module 4 Lite include Bluetooth?
No, this specific model does not include Bluetooth. The product data indicates it is a Lite version with 2GB of RAM and 0GB of eMMC storage. It does feature built-in WiFi for wireless connectivity. If you need Bluetooth, you would need to look for a different CM4 variant that includes it in its specification sheet.
What are the physical dimensions of the Waveshare CM4 Lite?
The Waveshare Raspberry Pi Compute Module 4 Lite measures 2.17 inches in length, 0.39 inches in width, and 0.19 inches in height. These compact dimensions make it suitable for tight spaces. The module weighs 3.53 ounces, providing a lightweight solution for embedded projects where size and weight are critical factors for your build.
How much RAM does the Waveshare CM4 Lite have?
The Waveshare Compute Module 4 Lite comes with 2GB of RAM. This memory capacity supports general computing tasks and embedded applications. It pairs with the BCM2711 processor to handle multitasking efficiently. This configuration is ideal for developers who need a balance of processing power and memory without the bulk of larger systems.
Is there local storage on the Waveshare CM4 Lite?
No, the Waveshare CM4 Lite does not have local storage. It is configured with 0GB of eMMC memory. You will need to boot the operating system from an SD card or over the network via its WiFi connection. This design reduces the overall cost and physical footprint of the module for specific use cases.
What is the weight of the Waveshare Compute Module 4 with Heatsink?
The Waveshare Compute Module 4 with Heatsink weighs 2.08 ounces. This weight includes the module and the attached heatsink for thermal management. The compact size and lightweight nature make it easy to integrate into small form factor projects. It offers a practical solution for embedded systems that require efficient heat dissipation without adding significant mass.
Does the CM4 Lite support WiFi connectivity?
Yes, the Waveshare Compute Module 4 Lite supports WiFi connectivity. It is equipped with built-in wireless capabilities, allowing you to connect to networks without additional adapters. This feature is particularly useful for projects that require internet access but need to maintain a small profile. It complements the lack of local storage by enabling network-based booting.
What processor do both Waveshare CM4 models use?
Both the Waveshare Compute Module 4 Lite and the Heatsink version use the Broadcom BCM2711 system-on-chip. This quad-core Cortex-A72 processor provides 64-bit performance for various applications. It ensures consistent processing power across both models, allowing you to choose based on other features like RAM, storage, or connectivity without sacrificing computational capability.