I'm stunned that "mapping out" blocks of bad RAM is a thing you can do. It reminds me of the old days when hard disks had to be "low-level formatted" first (ask your parents, kids) and it would ask you for a list of bad sectors to map out. Sometimes hard disks would even come with a list of known bad ones printed on the top.

The race to make laptops thinner is pointless. I wish I could buy a thicker laptop that is more robust, repairable, expandable, and has better cooling, with the extra space filled with batteries.

> The race to make laptops thinner is pointless.

Perhaps for you, but I very much care about my laptop's size and especially it's weight, as I carry it around on a daily basis.

Repairing or upgrading it aren't really of interest to me, as I wouldn't be able to aquire the parts where I typically live anyway. And performance and cooling have already been more than good enough for me in most laptops for the last decade.

Until very recently, the low power version of RAM had to be soldered to the motherboard.

If you want the battery life improvements, bear in mind that there is a hard limit on how large a battery you are allowed to fly with, so low power components are important.

I wish that my MBP14 was as thin as my partner’s MBA13.

Not to mention how often I long for my MBA11 with the tapered body which almost made it feel like it was floating in my lap when working from the couch.

I genuinely don't think people care that much about thin laptops.

Could it be that thin laptops are largely an excuse to provide a need to solder RAM; which in turn encourages consumption through obsolescence?

My lenovo work laptop is crippled by poor cooling and can only sustain ~1GHz clocks on extended tasks. An old personal laptop 10 years older outperforms it.

Framework?

Framework does exactly what the GP claims to want.

Unfortunately, not many people making those claims _actually_ want them by revealed preferences. They overwhelmingly want the lower price laptops with similar performance specs.

We used to buy Dells with minimum RAM and add quality third party RAM for way less than Dell wanted for it. They also use ram quantity to leverage other specs we're not bothered about. Of course they are moving to soldered.

Prebuilt branded PCs have always had inferior quality, compatibility, and expandability problems, all with overpricing.

The RAM situation is beyond helpless. I was meaning to buy another 32GB stick for my Framework, but they're out of stock and so are any validated alternatives.

I've found just one store that carries them, but seeing as they reported "50+ units in stock" I called the store and learned that "the item is available through a third party vendor within four business days", but looking at that the ratings it would be more like three weeks.

> But in the search for even thinner laptops

The LP in LPDDRx isn't about creating thinner devices.

The LP stands for Low Power and is aimed at making devices that draw less power resulting in a longer battery life.

LPCAMM2 sockets were supposed to provide all the benefits of soldering while still being a socket. Anyone know the state of adoption?

The new Framework 13 Pro laptop ships with LPCAMM2.

https://frame.work/blog/framework-laptop-13-pro-deep-dive-lp...

But no ECC support.

yeah but there is very little interest in that model compared to ai max line

You can't buy a single LPCAMM2 RAM module on Amazon. eBay has some.

Lenovo uses it on their latest thinkpad t14.

the fact no component supplier, not even alibaba sells LPCAMM2 sockets tells you everything you need to know. The only prices I can find are in $30 range per socket

Connectors are expensive, high-speed ones particularly. $30 is fine, though it makes a giant difference at what quantity that is. Did you look at a single one or 1k?

Honestly, reasonable.

I've been eyeing LPCAMM2 interposers for non-RAM uses - as an off the shelf connector for stacked PCB designs. The conclusion was that it wasn't produced or used at sufficient scale for it to work.

All of the new NVIDIA data center GPUs use SOCAMM2, quite similar to LPCAMM2.

https://www.koreatimes.co.kr/business/tech-science/20260420/...

Like the exact case with phone batteries that are not easily changable by the owner, soldered rams are evil...

> I then had to manually transcribe this, which [w]as “fun”.

Can't you select and copy the text in the photo (on most smartphones and PCs at least)?

Bash me all you want, but after CPU, GPU, memory controller & a host of other things integrated in modern System-on-Chips (SoC), I've long held the belief that next logical step would be to integrate RAM.

Optimal: piecemeal. As in: X sockets on a board, each socket takes a chip that adds CPU core(s), GPU cores, and some amount of main RAM. More chips, more powerful computer.

Keyword: socket. Read: replaceable. Bad chip out, good chip in. Slow chip out, faster chip in. Soldered onto board = reliable, but a defect could junk the whole machine.

Manufacturing processes for RAM and processor cores are not one and the same and use different tradeoffs. It's the main problem in-memory processing is running into, which is akin to what you're describing here. The die space required for the same level of performance makes the idea of on-die RAM intractible. The best they're able to do with RAM optimised manufacturing processes are tiny RISC-V cores that lack most of the feature sets. What apple does with moving the RAM chips on to the package really is the only viable option.

RAM uses a different process than the logic nodes you describe. RAM uses tons of capacitors, along with the the transistors.

Then there is the HBM which is an expensive process to mount on the chip.

> Bash me all you want, but after CPU, GPU, memory controller & a host of other things integrated in modern System-on-Chips (SoC), I've long held the belief that next logical step would be to integrate RAM

Haven't Apple (A-series, M-series) and others been copackaging memory for a while? (SiP or MCM?)

Those aren't socketed though, are they?

RAM on package or on die is common for laptops now.

I'm using laptop with Ultra 7 268V. It already has RAM on chip. I think they call it "processor package". I don't think it's socketed, though.

It it possible to desolder and replace the offending RAM if one were sufficiently motivated? I've seen folks doing that to soldered SSDs in MacBooks

It is - anything short of HBM can be replaced that way.

The issue, of course, is just how much time, effort and skill is required to do it.

It might become a viable commercial process outside third world countries if RAM prices spike even more - or if someone finds a way to teach an off the shelf $1000 robot arm advanced autonomous microsoldering.

Then there's the problem of forcing the device itself to recognize the new RAM. It's a device-specific trick. RAM sticks have a little tag chip that tells a PC "how much RAM this stick has", but RAM chips themselves don't - so the device has to infer its RAM capacity from elsewhere. Like strap resistors on the board. Which you have to find and adjust for the new RAM capacity. That, or fix the RAM values in firmware, which is also device-specific.

> RAM sticks have a little tag chip that tells a PC "how much RAM this stick has", but RAM chips themselves don't - so the device has to infer its RAM capacity from elsewhere

I'm surprised that in 2026 this is still true.

You could easily fit a little microcontroller on the die of each RAM chip which reports its make/model/manufacturing date, capacity and capabilities, can be triggered to run self-tests, etc. If they aren't doing that yet, I'm surprised that they aren't.

Why bother with the expense if you are permanently soldering it in anyway?

Well, it turns out they actually are bothering – while in DDR thru DDR4, the mode registers are write-only, LPDDR2 onwards have an MRR (Mode Register Read) command, which the CPU/chipset can use to inspect the manufacturer and capacity; and DDR5 has copied the same facility from LPDDR.

Yes, of course. It says - ball grid (array) in the article. Doing it by hand, e.g. with just hot air is proper hard. It's not hard with specialized equipment (that cost way more than the laptop, itself). Sourcing the chips is not easy either.

As for the videos and the Macs, you can see the same people (likely) soldering RAM as well.

If you live in Shenzhen, it's a subway trip away. Good repair services elsewhere can do it too. Either way any warranty you have is probably getting called into question after that, even if that's supposed to be illegal in some places (e.g. the US - they're supposed to prove that your modification/repair is what caused the warranty fault, but in practice…).

> Either way any warranty you have is probably getting called into question after that

I'm assuming if it were still under warranty, dead RAM chip would be enough to get a free repair/replacement from the manufacturer

Of course it is possible. Unless you're dealing with manufacturer who actively works against that, like Raspberry Pi.

On YT there’s dosdude soldering ram on M series SoCs

Good BGA experience and a steady hand seems required

Am I the only one who wonders if there is a way to get the kind of performance we want out of non-soldered components/SOC designs? Like from what I've heard, it's a "physics says no" problem, but I'm not sure if that's actually true (not being an expert in this technology) or if it's just the excuse many companies use to justify soldering everything to make serviceability impossible. And it would be really neat if this is actually being looked into by labs right now (possibly with AI's help), since areas like that are where I think (non) LLM AIs might be very useful. Same thing for medicine, materials, etc.

If the CPU can be socketed, there is no reason RAM can't be.

The boards using LPDDR don't have socketed CPUs. Also, every connector is a huge hit to your signal integrity, so one versus two might indeed be a big deal.

And yeah, it can be, but that's how you end up with the far slower regular DDR. Fast, repairable, cheap: pick (at most) two.

Effectively there are no socketed CPUs for laptops, though, for way more than a decade already. Saying that as I'd fully support modular components, as in desktops.

Tsinghua Tongfang (and I think Clevo) offers customizable laptops. Resellers might use own branding.

CPU and RAM are socketed. Clevo had socketed graphics cards too

While it's true that you can get better performance out of soldered memory than a socket, that's also not why vendors use it. Desktop computers, with their very much not soldered memory, get great performance after all. The laptop vendors solder the memory because it lets them make more money off selling units with more memory soldered in. That's all.

It's partly a thickness problem. Sockets add height to boards.

Besides, since RAM isn't getting cheaper for a while, this isn't a big issue now.

> Besides, since RAM isn't getting cheaper for a while, this isn't a big issue now.

I would argue the exact opposite, actually! My home machine has 32GB of RAM and is already over 7 years old. If it were to die right now I'd ideally go for an upgrade with 64GB so it would be good for another 7 or so. But that's completely unaffordable, and I could survive with 16GB for a year or two, so going for the bare minimum now and upgrading it later is looking very attractive...

Are any customers asking for a laptop that is 1 or 2mm thinner?

I don't know if they're asking for them, but they sure seem to appreciate them and see them as "better".

At work, the standard issue laptop is some form of HP Elitebook. These have been getting thinner, and people seem to like that. We're not a tech shop, and even the IT dept. is mainly barely-technical project-managers. An 8th gen i5 would be plenty powerful for what they do, but fortunately for them we have to replace the laptops regularly because for some reason we buy them with the least amount of RAM possible (even before the prices exploded).

Anyway, at the start of the year I was fed up with the ridiculous screen quality of the HPs and other annoyances, so I got myself an Lenvo p14 something-or-other. It's almost twice as thick and much heavier than the HPs, and everyone who sees it makes fun of it.

I can't recall the last time someone mentioned a phone or laptop being too thick as a downside in a review. Thin and light devices have been widely available for well over a decade, even to the point of caricature like the iPhone Air. It just isn't a feature worth caring about anymore.

Water resistant? Those ratings are lies anyways, and nobody is going to bring their expensive smartphone on a diving trip to take pictures - or even take it surfing without a waterproof case. In practice "water resistant" means "won't die from an occasional splash", and that can be achieved perfectly fine by repairable phones.

People seem to care about "thin and light" laptops, at least my colleagues do. But since they don't pay for these out of pocket, I can't tell how important it is to them, measured in currency.

Now, I don't know about surfing, but I regularly strap my iphone to my motorbike's handlebars to use as a GPS. No case. I don't particularly enjoy doing this under pouring rain, but it does happen, and the phone gets drenched. However, to the point about people wanting this, yes, I do. I would also love a replaceable battery. My old Galaxy S5 had both features, so saying that waterproofing means non-user-replaceable battery is a lie.

Since the OP mentions Lenovo, look at their other product lines for ones that still have socketed RAM. I'm currently running an E16 with 40GB RAM, 8GB soldered, 32GB socketed. And aside from that it leaves my previous X1 for dead in terms of performance. Lenovo's replacing the carbon fiber case, the whole reason the X1 line is called "Carbon", with crappy black plastic was the last straw.

Well that was good to learn!

i had to move a very very small resistor in the correct place to make a laptop disregard the soldered ram and only use the sodimm