250
Computer RAM gets biggest upgrade in 25 years but it may be too little, too late — LPCAMM2 won't stop Apple, Intel and AMD from integrating memory directly on the CPU (www.techradar.com)
submitted 2 years ago by [M, B] to c/technology@lemmy.world
61 comments fedilink hide all child comments
 

Computer RAM gets biggest upgrade in 25 years but it may be too little, too late — LPCAMM2 won't stop Apple, Intel and AMD from integrating memory directly on the CPU::LPCAMM2 is a revolution in RAM, but it faces an uphill struggle

top 50 comments

sorted by: hot top controversial new old
[–] 83 points 2 years ago* (last edited 2 years ago) (3 children)

Also, lots of users aren't gonna want the main system memory on the CPU die. Aside from the fact that it creates a clear path for vendors to artificially inflate prices through pretended scarcity via product segmentation and bundles, it also prevents the end users from upgrading the machines.

I'm pretty sure this even goes against the stated goals of the EU in terms of reduction of e-waste.

I have no doubt that a handful of vendors cooperating could restrict their offer and force the hand of end users, but I don't think this would be here to stay. Unless it provides such a drastic performance boost (like 2x or more) that it could be enough of an incentive to convince the masses.

  • permalink
  • fedilink
  • source
  • hideshow 6 child comments
    •
  • [–] 76 points 2 years ago (6 children)

    Outside of DIY, end users don’t care. See: Apple.

    Also, if you have a laptop with LPDDR5, it is soldered. If it has DDR5 or some variant of DDR4, it is likely also soldered as most OEMs did away with DIMM slots.

    I don’t like or agree with the practice.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 10 child comments
    •
  • [–] 33 points 2 years ago (1 child)

    Even people who build their own computers usually buy all the RAM they want at the time that they're building it.

    The biggest difference to them is likely the feeling that they're losing their ability to upgrade, more than the actual upgrade itself. I still think that feeling is an important factor, though.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 2 child comments
    •
  • [–] 15 points 2 years ago (1 child)

    Frame.work laptops have non soldered, upgradable DDR5 memory. In fact, you can buy a laptop with no memory and just buy it somewhere else and install it yourself.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 2 child comments
    •
  • [–] 15 points 2 years ago

    Yeah, but it is regular DDR5, which is less power efficient.

    I do love Framework, however. They are at the top of my list when I eventually upgrade my laptop.

    Hopefully they give us CAMM2 modules with LPDDR5 at that point.

  • permalink
  • fedilink
  • source
  • parent
  • [–] 3 points 2 years ago* (last edited 2 years ago) (1 child)

    I always think of my old Asus eePc netbook from 2010 that had a special compartment that was accessible from outside without opening up the notebook itself, just so that users would be able to upgrade their RAM. How did times change from "help the user to get what he needs" to "help the user get what we need". Personally I blame Apple for this tbh.

    This is how this looked: http://images.bit-tech.net/content_images/2007/12/add_more_storage_space_to_your_asus_eee_pc/panel.jpg

    And the best part: My son is using this netbook now with a light weight linux. I actually switched the RAM 2 month ago. It even plays Minecraft and he draws on it with my drawing tablet.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 2 child comments
    •
  • [–] 2 points 2 years ago

    In the case of LPDDR5, we don’t have removable memory due to tight signaling requirements and the fact that the DIMM slots themselves take up too much space when populated.

    LPCAMM2 solves this, so I hope it is widely adopted going forward because LPDDRR5 offers a huge upgrade over previous gen.

  • permalink
  • fedilink
  • source
  • parent
  • [–] 2 points 2 years ago (1 child)

    But even soldered ram isn’t as bad as in-cpu ram. Soldered ram can be replaced/upgraded by skilled technicians. I don’t think that’s possible at all with in-cpu ram.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 2 child comments
    •
  • [+] 11 points 2 years ago* (last edited 2 years ago) (2 children)
    [deleted]
  • permalink
  • fedilink
  • source
  • parent
  • hideshow 4 child comments
    •
  • [–] 3 points 2 years ago (1 child)

    Yeah, I agree.

    As for who those few are, well, I wouldn’t myself… probably… but I’d definitely like the option of taking my laptop to someone like Louis Rossmann who can do such work. He’s even shown that sometimes the ram gets destroyed by apples weird circuit designs and if it was just soldered on, the laptop and all your data would actually be salvageable.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 1 child comment
    •
    load more comments (1 reply)
    • load more comments (2 replies)
  • [–] 15 points 2 years ago (2 children)

    On CPU RAM does provide much faster performance. That’s the reason they are going that route.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 4 child comments
    •
  • [–] 10 points 2 years ago (1 child)

    It's part of the reason why RAM was always placed close to the CPU on the motherboard anyway. The farther they are apart, the more time and energy is used to transfer data and instructions between them.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 2 child comments
    •
  • [–] 9 points 2 years ago (2 children)

    Right, it s a physics issue, not greed. I mean, they’re going to make a margin off of it for sure but that’s not the sole reason to do this.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 4 child comments
    •
  • [–] 4 points 2 years ago

    Greed might not be the main driving force, but it's absolutely there too. I predict on-cpu ram costing more than it should in the future due to lack of competition. (yes I know there aren't that many manufacturers of the actual chips even today when the consumers can choose from many brands of ram sticks)

  • permalink
  • fedilink
  • source
  • parent
  • [–] 4 points 2 years ago* (last edited 2 years ago)

    I'm imagining a world with desktops and laptops that have On-CPU-RAM and On-Motherboard-RAM with the traditionally slotted RAM acting as a swap for the On-CPU-RAM.

    I mean, isn't that in principle how old swaps traditionally work? They take up some space on your slower disk drive to "swap" data from RAM onto when out of RAM. On-Motherboard-RAM, since it's slower than On-CPU-RAM, could achieve the same purpose, meaning limited On-CPU-RAM wouldn't be as impactful.

  • permalink
  • fedilink
  • source
  • parent
  • [–] 10 points 2 years ago (1 child)

    People who really care about computers buy handmade artisanal transistors.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 2 child comments
    •
    • [–] 73 points 2 years ago* (1 child)

    On CPU is definitely superior for performance, and what I'm not seeing people consider here is a future where you have On-CPU-RAM and On-Motherboard-RAM. CPU RAM for intense CPU functions, and traditionally seated RAM to be more like a modern "swap" I suppose, but instead of using the slower disks for swap, you're just using slower RAM.

    I could especially see this in Enterprise level hardware. I'm just saying, don't throw the baby out with the bathwater. Por Que No Los Dos?

    I know, I know, you can't expect corporations to do squat to benefit the consumer, but one can hope.

  • permalink
  • fedilink
  • source
  • hideshow 2 child comments
    •
  • [–] 31 points 2 years ago (2 children)

    Yeah, there is no way they’re gonna put 1TB of RAM on a CPU die anytime soon.

    Does that mean that consumer hardware will include expandable RAM though? I feel like for the average person, that option still has a very high chance of disappearing on a lot of machines.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 4 child comments
    •
  • [–] 15 points 2 years ago* (1 child)

    Oh yeah, a very high chance of disappearing. The unfortunate reality is probably 80% of people never upgrade their laptops or desktops. Building and maintaining your own PC has become more en vogue in recent years, but the vast majority of average consumers just don't take part in the practice. Thus, it will not be prioritized by the industry. Why spend money on making your machines upgrade-able if the majority of users don't ever take advantage of the feature?

    I don't like why it will happen, but I understand the economics of it.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 2 child comments
    •
    • [–] 16 points 2 years ago (2 children)

    both techniques will obviously need to coexist for some time. they dont have logistics on large memory near the processor,. quite yet, so there is still a place for ram.

  • permalink
  • fedilink
  • source
  • hideshow 4 child comments
    •
    • [–] 14 points 2 years ago (7 children)

    Wouldn't RAM on die mean lower wafer yield?

  • permalink
  • fedilink
  • source
  • hideshow 7 child comments
    •
    load more comments (7 replies)
    [–] 14 points 2 years ago

    We already have memory wafers glued to our CPU wafers in the form of L3 cache. It's lower latency, higher throughput, up to a few hundred MiB in bigger models and can potentially be used without external RAM sticks (but I've not heard of using that feature outside of BIOS firmware early boot -- that's probably the only change we'll see). Sometimes it's DRAM, sometimes it's SRAM, its size varies quite a bit.

  • permalink
  • fedilink
  • source
    •
    [–] 5 points 2 years ago* (1 child)

    I get that this was primarily created to benefit laptops, but would it provide any advantage for desktops?

  • permalink
  • fedilink
  • source
  • hideshow 2 child comments
    •
    • [–] 4 points 2 years ago

    3d vcache would like to say hi

  • permalink
  • fedilink
  • source
    •
    [–] 3 points 2 years ago

    This is the future of PC, but with soldered RAM: https://en.m.wikipedia.org/wiki/Slot_1

  • permalink
  • fedilink
  • source
    •
    [–] 3 points 2 years ago (6 children)

    I already use a processor with integrated graphics

  • permalink
  • fedilink
  • source
  • hideshow 6 child comments
    •
    load more comments (6 replies)
    [–] 3 points 2 years ago (3 children)

    Question: modern systems can mount hundreds of GB or even terabytes of RAM, right? At this point, why not mount non-volatile storage as RAM? Performance should increase since data wouldn't have to be loaded.

  • permalink
  • fedilink
  • source
  • hideshow 6 child comments
    •
  • [–] 6 points 2 years ago*

    From the perspective of a computer engineer SSDs are painfully slow. Waiting for data on disk is slow enough that it is typically done by asking the OS for the data and having the OS schedule another process onto the CPU while it waits. RAM is also slow although not nearly as slow. Ideally you want your data in the L1 cache which is fast enough to minimally stall the CPU. The L2 and L3 caches are slower but larger and more likely to have the data you want. If the caches are empty and you have to read RAM your CPU will either do a lot of speculative execution or more likely stall.

    Speculative execution on CPUs is a desperate attempt to deal with the fact that all memory access is slow by just continuing through the code as if you know what is in memory. If the speculative execution is wrong a lot of work gets thrown out (hopefully nothing unsound happens) and the delay is more noticable.

    Bluntly an SSD only system would probably be an order of magnitude slower. I'm also not sure switching to a new process (or even thread) to load from SSD would be viable without RAM as it would likely invalidate a lot of cache triggering more loads.

  • permalink
  • fedilink
  • source
  • parent
    • load more comments
    view more: next ›