Raspberry Pi Compute Module 4S Gets 2GB, 4GB, and 8GB Memory Upgrade

Raspberry Pi Compute Module 4S Gets 2GB, 4GB, and 8GB Memory Upgrade

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Raspberry Pi has recently announced the release of three new Raspberry Pi Compute Module 4S(CM4S) with expanded  RAM options now offering 2GB, 4GB, and 8GB variants. These new modules feature the same Broadcom BCM2711 quad-core Cortex-A72 SoC used in Raspberry Pi 4 and Raspberry Pi CM4 and have a starting price of only $25. The only odd thing about this is that Raspberry Pi Foundation did not make this for a single purchase, and you have to buy a minimum quantity of 200 to get your hand on one of these modules.

The CM4S stands out from other Compute Modules in a few ways. It keeps the same size and shape as the CM3+ but has a faster processor called the BCM2711 chip. It doesn’t have some features found in the CM4, like Wi-Fi, Bluetooth, USB 3.0, and PCI Express.

The reason for creating the CM4S is to help industrial users who are using CM3-based designs but can’t find the parts they need. The CM4S is designed to be an easy upgrade for these users because it fits into the same slot as the CM3+ while offering improved performance.

Raspberry Pi Compute Module 4S Specifications:

  • SoC:
    • Broadcom BCM2711
      • CPU: Quad-core 64-bit Cortex-A72 processor @ 1.5 GHz
      • GPU: VideoCore VI GPU
      • 3D Graphics: Supports OpenGL ES 3.0 and Vulkan 1.1
  • Video:
    • H.265 (HEVC) decoding up to 4Kp60
    • H.264 decoding up to 1080p60 and encoding up to 1080p30
  • Memory:
    • LPDDR4-3200 SDRAM with ECC, available in 1GB, 2GB, 4GB, and 8GB configurations
  • Storage:
    • eMMC flash options: 8GB, 16GB, or 32GB
    • CM4S Lite variant offers an option for 0GB eMMC Flash
  • Ports and Interfaces:
    • Display interfaces:
      • HDMI 2.0 port supporting up to 4Kp60
      • 2-lane and 4-lane MIPI DSI display interfaces
      • Composite TV out (PAL or NTSC)
    • Camera interfaces:
      • 2-lane and 4-lane MIPI CSI camera interfaces
    • USB:
      • 1x USB 2.0 port (high speed)
    • Other I/Os:
      • 46x GPIO signals
      • 1x SDIO 2.0 (available on CM4S Lite variant)
  • Supply Voltage:
    • Requires VBAT (2.5V to 5V) and +3.3V supplies
    • +1.8V is no longer used but can be supplied for backward compatibility
  • Dimensions:
    • 67.6mm × 31.0mm, compatible with JEDEC MO-224 mechanical specification for 200-pin DDR2, but not electrically compatible with DDR2 SODIMM modules
  • Production Lifetime:
    • Raspberry Pi Compute Module 4S will remain in production until at least January 2034.

The new Raspberry Pi CM4S, now with built-in eMMC storage, is available for purchase through Raspberry Pi Resellers (you can find a list on their website). If you’d prefer a version without the eMMC storage, the CM4S Lite is also an option. For more details and the latest information, visit the Raspberry Pi press release page.

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About Debashis Das

Tech Content Creator | Hardware Design Engineer | IoT Enthusiast | Digital Storyteller | Video Creator | From crafting digital dialogues at Semicon Media to orchestrating online engagement at Electronics-lab.com, my journey is about making tech talk interesting and accessible. In the quiet corners of the day, I advocate for easier tech education, one tutorial at a time. Let's connect and keep the digital dialogue going!

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