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iFixit hails replaceable LPCAMM2 laptop memory as a 'big deal' (www.theregister.com)

submitted 6 months ago by ylai@lemmy.ml to c/technology@lemmy.world

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[–] DaPorkchop_@lemmy.ml 2 points 6 months ago (3 children)

I've never understood why so many manufacturers do that (laptops with 1 slot soldered and 1 slot replaceable) it seems like the worst of both worlds:

since one slot is soldered only half the RAM can be upgraded
since one slot is replaceable the laptop can't be made thinner since they still have to include the latching mechanism for the one replaceable DIMM

[–] ForgotAboutDre@lemmy.world 2 points 6 months ago

It lets you build one motherboard with all possible ram options.

The smallest one has all it ram soldered on. Therefore less time is required in assembling the laptops. All other patients just need the extra ram placed in the dimm slot.

[–] elucubra@sopuli.xyz 1 points 6 months ago

Thanks! Did the trick!

[–] elucubra@sopuli.xyz 0 points 6 months ago (1 children)

Generally you can upgrade RAM of different capacities, but only the amount of RAM that matches the original will run in dual channel. I've done it in a couple of machines, and it worked fine. the extra RAM should take a small performance hit, but In my case the tradeoff was worth it. I've also upgraded RAM beyond the specified max. Hasn't always worked.

[–] DaPorkchop_@lemmy.ml 1 points 6 months ago

Yeah, I know it can be mismatched sizes, the laptop i'm typing this on has 4gb soldered + a 16gb DIMM. My question was more trying to understand why manufacturers seem to prefer using one of each rather than just making both replaceable, since the hybrid approach makes it only partly upgradeable while taking up as much physical space as if both slots used removable DIMMs. Since it seems like this combines all of the disadvantages of fully replaceable and fully soldered RAM with only half of an advantage, why are there so many laptops which do it?