Upgrading Laptop RAM: A Changing Landscape

Introduction

• Upgrading laptop RAM is traditionally cumbersome.
• A new standard, CAM 2, could simplify this process.

CAM Overview

• CAM (Compression Attached Memory Module): Developed by Dell's Tom Schnell as an alternative to SO-DIMM.
• CAM initially launched in Dell laptops in 2022, replacing the SO-DIMM form factor.
• JEDA ratified CAM 2 as a standard, potentially reviving upgradable laptop RAM.

SO-DIMM vs DIMM

• DIMMs (Dual Inline Memory Modules): Replaced SIMMs in the 1990s due to superior 64-bit support.
• SO-DIMMs: Smaller form factor of DIMMs, primarily used in laptops but less resistant and power-efficient than soldered memory.

Challenges of SO-DIMMs

• Soldered memory in laptops is now common, sacrificing upgradeability for reliability.
• SO-DIMM uses a zigzag trace design due to space constraints, leading to potential signal distortion and inefficiencies.

Advantages of CAM 2

• Design: CAM is thinner, potentially 57%, and can support up to 128 GB.
• Connector: Utilizes a land grid array, reducing trace lengths and enhancing signal integrity.
• Performance: Overcomes SO-DIMM's speed cap of 6400 MHz, designed for future performance needs.
• Power Efficiency: CAM 2 supports both DDR5 and power-efficient LPDDR5x.

Implementation and Challenges

• CAM 2 requires screws for mounting, enhancing stability but complicating installation.
• Upgrade process may involve replacing CAM 2 modules rather than simple addition.
• Different physical slots prevent incorrect installation of DDR5 and LPDDR5 versions.

Future Prospects

• CAM 2 could become the standard laptop memory, driven by adoption from Dell, Samsung, and Micron.
• Interest and cost-effectiveness expected to increase due to recent standard ratification.
• Potential for upgradable RAM in smaller devices like tablets or single-board computers.

Conclusion

• CAM 2 presents a promising future for laptop RAM upgradeability.
• Continued support by major tech companies could bolster its adoption and integration.

Call to Action

• Viewers are encouraged to engage with the content and consider the impact of CAM 2 on future tech purchases.