alt Hacker News> LPCAMM2 memory that’s fast, efficient, and easily serviced [0]
Today I Learned about LPCAMM2, which is refreshing, seeing soldered-on memory always felt like some kind of slide into disposable barbarism.
[0] https://www.ifixit.com/News/95078/lpcamm2-memory-is-finally-...
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Looks like the T14 Gen 7 is the first T14 to have a CAMM socket. The previous model has SODIMM DDR5-5600, more power hungry? Prior to that it was the more expensive P1 Gen 7 that had LPCAMM2.
Regarding the T14 and T16, I'm frustrated that in my market (AU), they don't sell better screens than 1920x1200. I'd like to have a brighter 3k or 4k screen.
The LPCAMM2 seems to be limited to the Intel models, according to the pc mag article.
https://www.pcmag.com/news/lenovo-thinkpad-t14-gen-7-hands-o...
It did worry me though, as I had also never heard of it. Is it highly available like more regular DIMM or SODIMM ram?
That is usually my concern with things like the modular ports and replaceable keyboards too. By the time I actually need to replace anything it could be 10 years from now, could I actually source these parts easily?
Regardless, that is a excellent problem to have compared to other less repairable laptops. I have been running my current laptop for 10 years, by the time it's unrepairable I might switch to this.
Yeah I learning about LPCAMM2 memory was far more interesting than the repairability score.
I thought the issue with the soldered on RAM wasn't the fact that it was soldered, but that manufacturers would use chips that are not easy to source and in some way serialised. So even if you got larger chips, you would still have to figure out other parts to swap that tell the CPU it's 32GB now, not 24GB.
When CAMM was announced, they (Dell) mentioned that one of the reasons for soldered RAM was due to electrical tolerances not being met anymore with regular DIMMs at the speeds they were reaching. CAMM was designed to avoid this, and ensures that each trace has the same length so there aren’t timing issues.
I’m no expert but it sounds plausible to me. From a manufacturing perspective, it makes sense that they’d want modular RAM so they can configure them at point of sale instead of having to manufacture multiple motherboards with only RAM sizes being different.