Compression Attached Memory Modules may make upgradable laptops a thing again
A new RAM standard called Compression Attached Memory Modules (CAMM) is reigniting hopes for user-upgradable laptops by promising high bandwidth in a thinner form factor than traditional SO-DIMMs. Commenters debate whether non-upgradeable, soldered memory became dominant mainly for technical reasons—like power efficiency and signal integrity at high speeds—or because manufacturers profit from locking in configurations and upselling RAM and storage. Many argue that consumers have been pushed toward ever-thinner, less repairable designs, and see CAMM as a potential compromise that could restore some upgradability without giving up modern performance and battery life, provided vendors actually expose it to end users.
Thin vs Thick Laptops and User Priorities
- Strong split: some argue extreme thinness has degraded laptops (worse cooling, fewer ports, shallow keyboards) and was driven by marketing and copying Apple’s aesthetics.
- Others say thin/light clearly matches mainstream demand, including for gaming laptops, and that bulkier “desktop replacement” models are a niche.
- Several note weight matters more than a few extra millimeters of thickness; others insist small differences in size matter for daily carry.
- Some argue that perceived demand for “thin” is partly manufactured; others counter that rivals with thicker designs haven’t outcompeted thin ones, so preferences are real.
Upgradeability, RAM Limits, and CAMM
- Many miss older laptops with easily replaceable RAM, storage, batteries, and Wi‑Fi cards. Soldered RAM is seen as locking in higher initial specs and forcing full-device replacement.
- CAMM (Compression Attached Memory Module) is welcomed as at least enabling RAM replacement, even if there’s only one slot and upgrades require swapping the whole module.
- Some see CAMM as only “slightly better” than soldered; others say being able to change RAM without replacing the laptop is a major win.
- Historical complaints: chipsets and 32‑bit-era limits often capped RAM, pushing vendors toward fixed configurations.
Technical Arguments: Bandwidth, LPDDR, and CAMM Design
- Soldered LPDDR is defended on technical grounds: higher frequencies and better signal integrity than SO‑DIMM, especially important for integrated GPUs and AI workloads.
- Skeptics reply that heavy AI use is niche on laptops and that vendors also exploit these limits to justify non-upgradeable memory.
- CAMM uses compressed contacts (screwed-down module) and wide interfaces equivalent to dual SO‑DIMMs, offering high bandwidth and lower z‑height, though some doubt it really saves much space.
- Concern raised about reliability of spring contacts and “loose RAM” leading to intermittent failures.
Economics, Repairability, Data, and E‑waste
- Non-upgradeable RAM and SSDs are criticized for high OEM markups and reduced repairability; supporters say many buyers neither upgrade nor repair and prefer simplicity plus warranties/AppleCare.
- Debate over data recovery: soldered, encrypted storage makes chip extraction moot; backups and cloud services are framed as the practical solution, though some see this as surrendering data ownership.
- On e‑waste, one view is that upgradability reduces waste; another notes old components themselves become waste and that complete older laptops can remain usable as-is.