mjtomlin

About

Username
mjtomlin
Joined
Visits
178
Last Active
Roles
member
Points
4,790
Badges
2
Posts
2,673

Reactions

2.6KLike222Informative

  • Apple Vision Pro 'Gaze and Pinch' gesture combo is perfect for AR & VR

    mjtomlinmjtomlin
    I would assume the issue of eye tracking being more error prone has more to do with the implementation of the eye tracking system and just how accurate it is. From what I've heard, Apple's implementation is extremely accurate. So maybe Apple has been able to fine tune it beyond what the researchers were using?
    jony0FileMakerFellerwatto_cobrabyronl

  • Apple Vision Pro safety concerns limit 'fully immersive' apps

    mjtomlinmjtomlin
    jgreg728 said:
    And here is a major reason why this technology will not be replacing any current devices anytime soon.

    Not sure how you came to that conclusion? Do you think it's a good idea to blindly walk around while inside a fully immersive VR world?

    Have you seen all the YouTube videos?

    Furthermore, this is not a limitation of the technology or device, it's a limitation Apple is currently putting on software.
    StrangeDayslolliverbaconstangFileMakerFellergilly33watto_cobra

  • Apple's iPhone came out 16 years ago and changed the world

    mjtomlinmjtomlin
    MacPro said:
    I predict the iPhone will sooner that later have stereoscopic lenses to help drive the VisionOS devices that are coming.  It might not be the 15 but by the time the 16 rolls out I'd wager it will.  Most likely this will be limited to the high end iPhones.

    Might make more sense to introduce a stereoscopic camera system on the iPad Pro first. It was first with a LiDAR Scanner as well.
    byronlradarthekat

  • Why Apple uses integrated memory in Apple Silicon -- and why it's both good and bad

    mjtomlinmjtomlin
    sbdude said:
    Genuinely curious, why not include higher capacity memory modules if there's demand for it? I imagine the pin outs are the same for every capacity Apple uses, so why not include more than 192 GB for those tasks that demand greater amounts of memory? Or are M Series chips unable to address that much memory?
    Are you sure they don't already use the highest density memory chips (considering size constraints) on those packages!? They need 8 (24GB) chips to achieve that 800GB/s bandwidth (1 chip per 100GB/s controller). Another thing to consider is the amount of power drawn by the increase in memory. Having that much power draw in such a relatively small area might be limiting.

    With the M2 Max topping out at 96GB (4x 24GB), I'm thinking the 24GB chips they're currently using are probably the highest capacity chips they could fit in the given area.
    williamlondonwatto_cobra

  • Why Apple uses integrated memory in Apple Silicon -- and why it's both good and bad

    mjtomlinmjtomlin
    melgross said:
    Ok, so the writer gets it wrong, as so many others have when it comes to the M series RAM packaging. One would think that’s this simple thing would be well understood by now. So let me make it very clear - the RAM is NOT on the chip. It is NOT “in the CPU itself”. As we should all know by now, it’s in two packages soldered to the substrate, which is the small board the the SoC is itself soldered to. The lines from Apple’s fabric, which everything on the chip is connected with, extend to that substrate, to the RAM chips. Therefore, the RAM chips are separate from the SoC, and certainly not in the CPU itself. As we also know, Apple offers several different levels of RAM for each M series they sell. That means that there is no limit to their ability to decide how much RAM they can offer, up to the number of memory lines that can be brought out. This is no different from any traditional computer. Every CPU and memory controller has a limit as to how much RAM can be used. So, it seems to me that Apple could, if it wanted to, have sockets for those RAM packages, which add no latency, and would allow exchangeable RAM packages. Apple would just have to extend the maximum number of memory lines out to the socket. How many would get used would depend on the amount of RAM in the package. That’s nothing new. That’s how it’s done. Yes, under that scheme you would have to remove a smaller RAM package when getting a larger one, but that's also normal. The iMac had limited RAM slots and we used to do that all the time. Apple could also add an extra two sockets, in addition to the RAM that comes with the machine. So possibly there would be two packages soldered to the substrate, and two more sockets for RAM expansion. Remember that Apple sometimes does something a specific way, not because that’s the way it has to be done, but because they decided that this was the way they were going to do it. We don’t know where Apple is going with this in the future. It’s possible that the M2, which is really just a bump from the M1, is something to fill in the time while we’re waiting for the M3, which with the 3nm process it’s being built on, is expected to be more than just another bump in performance. Perhaps an extended RAM capability is part of that.

    Yes. It is common knowledge that RAM is not part of the actual SoC, it's on package with the SoC. People use the term "SoC" to describe the whole part ("M1", "M2") which includes the RAM.

    Being able to control how much RAM is installed allows Apple to guarantee that all memory channels are filled and being utilized, maximizing performance.
    Alex1Nwilliamlondonkillroywatto_cobra