THE RAM STICKS INSIDE YOUR LAPTOP MAY NOT SURVIVE WHAT COMES NEXT

This might be the right time to pause and consider the RAM format inside your laptop. For nearly three decades, we have relied on SODIMM modules. These small, removable sticks have been fundamental to laptop flexibility and upgradability, powering all sorts of laptops, from budget notebooks to extremely powerful workstations. Upgrades are typically as simple as opening a panel and replacing the module.

However, modern computers are thinner in design and require a faster memory standard. Manufacturers are turning to CAMM2 as the new approach that phases out the traditional RAM slots and replaces them with flat memory modules that mount onto the motherboard. This may signal the end of the laptop RAM sticks you have gotten used to.

SODIMM has powered laptops for nearly three decades

The vertical RAM stick became the industry default

SODIMM (Small Outline Dual Inline Memory Module) wasn't always the standard for laptop memory. Its introduction in 1997 was a means of fitting memory into the tighter spaces of portable computers. It was the compact version of DIMM memory used in desktop PCs.

Compared to the long memory modules of desktop computers, SODIMMs are shorter and typically installed in a motherboard slot at an angle, then pressed down and locked in place with metal clips. The entire design allows for simple installation with a tiny footprint. Its adoption was quick because it solved several engineering problems. Laptop manufacturers began building standardized memory slots, RAM vendors introduced interchangeable memory modules, and regular users gained easy access to memory upgrades.

Power users loved SODIMM because they didn't have to replace an entire computer when they needed a memory upgrade. With this kind of flexibility, it's understandable why SODIMM has dominated laptop design over the last few decades. Below is how SODIMM compares to some other options:

The physical design of SODIMM is becoming a bottleneck

Faster memory and thinner laptops expose its weaknesses

Modern laptops are built for a new era. Three of the major demands of these new computers are higher memory speed, lower power use, and a thinner chassis. These are needs that no longer justify the traditional RAM sticks we have used over the years.

Of all these demands, thinner chassis designs seem to be one of the most noticeable needs that require a phasing out of the old models. Because SODIMM modules typically sit upright inside the laptop, there is a need for adequate vertical clearance for them to fit. This is harder to achieve on an ultra-thin computer.

During CPU/RAM communication, signals travel along traces from the CPU and motherboard through the SODIMM slot to the memory chips. This flow poses a signal integrity challenge, especially with DDR5, where longer signal paths are harder to maintain under high memory speeds — effectively capping SODIMM at around 6,400MT/s.

The signals become more sensitive as memory speed increases and are more susceptible to interference and noise. This has led to more laptop manufacturers switching to soldered LPDDR memory. This shortens the signal travel path by placing the RAM directly on the motherboard. This also results in higher speeds and better power efficiency.

However, it comes with one significant downside. Soldered memory isn't upgradable or replaceable. Consequently, a laptop using 16GB of LPDDR memory is stuck with this memory limit for its entire lifetime. Over several years, the two real choices have been flawed. One was a bulkier upgradable laptop, and the other a thinner, unupgradeable one.

CAMM2 redesigns how laptop memory connects to the motherboard

A flat compression module replaces the traditional RAM slot

CAMM (Compression Attached Memory Module) introduces memory modules that sit flat against the motherboard and connect through a compression connector in place of the vertical RAM stick.

Screws secure the module and press the contact pads on the memory board directly onto the connector beneath it. This essentially shortens the signal travel path and eliminates the traditional RAM slot. This technology allows for higher memory speeds with less interference and requires far less vertical space within the laptop chassis.

Dell initially introduced the CAMM concept, even though it has evolved into a broader industry standard. After JEDEC approved CAMM2 in 2023 and a public announcement in 2024, the door has been opened wide for manufacturers to adopt it.

However, what I find most interesting about CAMM2 is support for DDR5 CAMM2 and LPCAMM2. While the former uses traditional DDR memory chips, the latter uses low-power LPDDR5 or LPDDR5X memory. The core differentiator in both is the pinouts that ensure you don't install the wrong module. Below are the core differences between CAMM2 and SODIMM:

CAMM2's most overlooked benefit is the ability to have both memory channels on a single module. SODIMM typically requires two separate sticks for this. CAMM2 allows manufacturers to make ultra-thin laptops that get much closer to the performance characteristics of soldered RAM, while keeping memory upgradeable.

The first CAMM2 laptops show where the industry is heading

Workstations and new consumer laptops are already adopting it

Dell introduced CAMM designs in Precision workstation laptops. These are very capable laptops, great for 3D modeling, simulation, and engineering. Lenovo has followed suit with the ThinkPad P1 Gen 7, the world's first laptop to ship with LPCAMM2 memory. It uses LPDDR5X modules and outperforms the traditional SODIMM DDR5 with higher bandwidth.

The more mainstream ThinkBook 2026 series will now boast LPCAMM2 LPDDR5X-8533MT/s memory. This introduces the new tech to a broader audience and will pair it with Intel’s newer Core Ultra processors.

While you may see it as a gradual rollout, it's actually a clear pattern in the PC industry where workstations and premium laptops get the first launch of new hardware. New hardware comes at premium pricing, but costs fall as production scales, and gaming laptops and mainstream notebooks catch up. This is evident in Lenovo's announcement of LPCAMM2 memory on the mainstream ThinkPad T14 Gen 7 business laptop.

CAMM2's bandwidth and efficiency boost

The most talked about advantage of CAMM2 is bandwidth. This is even more the case when it's paired with LPDDR5X modules. LPCAMM2 is currently shipping at speeds of around 7,500MT/s, with the standard capable of reaching 9,600MT/s. This is miles ahead of SODIMM DDR5 laptops that get to around 5600MT/s, and gives a significant difference during heavy workloads that rely on memory performance.

LPDDR-based CAMM2 also requires significantly less power — up to 61% less during active use and up to 80% less during standby — which translates to meaningful battery life gains across both heavy workloads and everyday use.

2026-03-10T06:39:22Z