Raspberry Pi expanded the memory of the 4S Compute Module

Raspberry Pi introduced industrial 4S Compute Module boards with additional SDRAM.

The Raspberry Pi is a single-board computer the size of a bank card, originally designed as a low-cost system for teaching computer science.

About the 4S update

The Raspberry Pi Compute Module 4 SODIMM (4S) is a system modular (Com) system containing the processor, memory, eMMC flash, and supporting power circuitry. These modules allow developers to use Raspberry Pi hardware and software in their own systems and form factors.

The 4S form factor computer modules are based on the Raspberry Pi 4 Model B architecture and have 18 additional GPIO pins compared to standard Raspberry Pi boards.

Now, users of the computing module, in addition to the main 1 GB version, can choose 2 GB, 4 GB and 8 GB versions.

“4S is designed for industrial customers upgrading from a 3 or 3+ compute module who want to continue using the SODIMM form factor or take advantage of the increased capacity of SDRAM.”

Raspberry Pi whitepaper post

Prices for the new line start at $25 per unit, and the boards are only available in boxes of 200 pieces.

What is the 4S Compute Module used for?

Industrial customers have used 4S boards in everything from electric vehicle charging stations to self-fill beer taps and coffee machines. The company says it has also seen specialized medical monitoring devices built into its compute modules.

It is also noted that a Raspberry Pi market research client used the modules to develop a system that understands the types of TV programs that different people like to watch. In turn, Kunbus has developed a whole line of Revolution Pi industrial products based on the 4S computing module.