CAMM2, what are RAM memories that replace SO-DIMMs

There has been talk of the successor to RAM memories for a long time SO-DIMM intended for portable systems. The new format CAMM (Compressed Combination Memory Module) is designed to support and guide next-generation products, giving designers a broad range of options to meet growing memory needs. CAMM2as just ratified by JEDEC (an organization that develops standards for the electronic technology industry), officially replaces the SO-DIMM form factor, which has been used for over two decades.

What is CAMM2 and what advantages it introduces

In the past we have already seen what CAMM is and how it works: it is a technology initially born as a proprietary solution developed within the laboratories Dell and used in the Precision 7670 laptop advantage The main feature of CAMM compared to SO-DIMM is its compactness: according to Dell the new memories are 57% thinner than the corresponding SO-DIMMs.

Dell also said that CAMM could help overcome the data barrier 6.400 MHz Of clock in the case of DDR5 memories to scale towards even higher frequencies.

CAMM2 SO-DIMM memory comparison

Comparison between SO-DIMM and CAMM RAM memories (source: Dell).

After developing the initial CAMM specifications, Dell has decided to donate them to JEDEC in early 2023. In the meantime, Samsung had wasted no time presenting its LPCAMM memories up to 128 GB, inspired by Dell’s work. Now, and this is perhaps the novelty More importantly, CAMM looks set to enjoy widespread support across the entire tech industry and, in particular, to be embraced by manufacturers of modern notebooks.

JEDEC has in fact decided to call CAMM2 lo standard now officially approved, probably to underline that it is the result of Dell’s commitment but, at the same time, it deviates slightly from the company’s original proposal. The adoption of CAMM2 therefore now becomes much easier for everyone, given that JEDEC is the same entity that, for example, supports GDDR6, HDM3 and DDR5. Just to name a few.

Activation of dual channel with a single memory module

The CAMM2 specification includes two variants: one for DDR5 and one for LPDDR5(X). The use of CAMM2 will make it possible to use LPDDR5(X) RAM memories not soldered on the motherboard even if the circuit diagram pin It prevents manufacturers from using both new and traditional RAM within the same project and interchangeably.

To activate the dual channelFurthermore, with CAMM2 it is no longer necessary to use multiple memory modules: with this scheme, using a single CAMM2 module, it is possible to offer greater bandwidth to the CPU and integrated graphics, guaranteeing the maximum possible performance. In terms of performanceCAMM2 can offer speeds up to 8,5 Gbps with capacities up to 128 GB.

As you might expect, CAMM2 costs significantly more than SO-DIMM memories. At least initially. However, the new technology is destined to become the new standard for portable systems and other mobile devices. Nonetheless, SO-DIMM will not suddenly disappear: the two solutions will coexist for a long time.

The opening image is from Dell.


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