Understanding the Raspberry Pi CM4
The Raspberry Pi line of computer systems has led
innovation from its inception. Bringing high performance and flexibility to low-cost computing, it has been at the
forefront of advancements in everything from model railroading to robotics. The Raspberry Pi Compute Module 4 (CM4)
represents another leap forward in ability, this time aimed at professional developers and for industrial
applications of all kinds.
Offering higher performance and connectivity that previous versions, this new module allows developers to integrate
its computing power into custom systems, without being constrained by the standard form factor of the Raspberry Pi
boards.
Reviewing its capabilities
By bringing the latest in Raspberry Pi computing power to a new form factor that allows for flexible application in
professional use, the CM4 has several advantages that are worth pointing out.
Easily Available — Like all Raspberry Pi products, the CM4 is easily available, and unlike the
competition, comes with the massive ecosystem and support of the Raspberry system
Ideal for Clusters — The compact dimensions, power efficiency and low cost make the CM4 an
ideal choice for cluster computing in data processing applications, although larger clusters can become
complex to manage
Flexible Board Design — The CM4 uses SODIMM type connectors, which improves flexibility,
however for those unfamiliar with custom PCB solutions, this may present a steep learning curve
Specs — Although a new format, the CM4 matches the Pi 4 for specifications, meaning an A72
quad-core Arm Processor with a max of 8GB of LPDDR4 Ram. That means powerful computing with low power
consumption. However, some may have expected some change from the Pi 4 specs and could be a little
disappointed.
The Raspberry Pi CM4 has all the advantages of a Pi 4 with the added bonus of that flexible format that seamlessly
integrates with custom PCB installations. The need to create a carrier board will not phase those used to this type
of custom work, however it can be a challenge for those new to the concept.
Comparing the CM4 with the standard Pi 4
So, the big question would be, which one is right for you? Performance and capability wise, they are as close to
identical as you can get, with the main difference being that new format that really does change how you can
integrate this powerful device into any project.
The Pi 4 has all the attributes we expect from the Pi, and if you are creating a standalone project that can use the
RPi GPIO pins , it offers everything you need.
However, if you are creating an embedded project, or developing something
that relies on a custom layout, then the CM4 is the perfect choice with its greater customization and flexibility.
Feature
Raspberry Pi CM4
Raspberry Pi 4
Form Factor Compact, requires carrier board Standard board with accessible GPIO pins
Processing Power Quad-core ARM Cortex-A72 Quad-core ARM Cortex-A72
Memory Up to 8GB LPDDR4 RAM Up to 8GB LPDDR4 RAM
Connectivity Requires carrier board for access Built-in HDMI, USB, Ethernet, and GPIO ports
Storage Optional onboard eMMC; external via carrier MicroSD card slot
Flexibility High, suited for embedded applications Moderate, designed for general use
Use Case Embedded systems, OEM products, AutoPi TMU CM4 DIY projects, education, hobbyist applications
As we can see in the table above, at a base level these two devices are comparable, it is in the detail of the way
they can be installed and how they connect to the world that separates them.
Raspberry Pi CM4 in use
While it is always fun to enjoy the spec sheets of new tech, the most important thing is what you can do with it.
There are many applications where the CM4 will excel, even compared to the standard Pi 4, here are some examples to
think about.
Embedded Systems — The compact, flexible format is ideal for embedded devices in IoT networks ,
for dedicated home automation systems and for use in custom controls for industrial applications
Video Playback — Powerful processing allows for smooth video playback in compact systems such
as digital signage and media centers
Developing and Prototyping — The flexible approach to computing that the CM4 offers means that
it can be deployed in rapid prototyping where performance and connectivity matter
Education — The CM4 can be integrated into unique interactive learning systems, educational
kits and more
AutoPi TMU CM4 — this device is a
CM4 system specifically designed for automotive applications,
providing telematics
features in a compact yet robust format. Capabilities include vehicle tracking , a custom array of data
logging to suit fleet needs and remote-control solutions for vehicle management. Scalable and
flexible, the AutoPi TMU CM4 delivers powerful computing and reliable performance for fleet management projects of any scope.
Conclusion
With its new, flexible format and excellent performance, the Raspberry Pi Compute Module 4 sets new standards in
what can be done with microcomputers today. Covering everything from embedded systems in the automotive industry to
powering education, this new, flexible design encourages innovation and gives developers powerful tools to create
new approaches in every industry.
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