this post was submitted on 18 Aug 2023
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ULTRARAM will allow you to close your laptop, come back a thousand years later and pick up where you left off (www.techradar.com)
submitted 1 year ago by floofloof@lemmy.ca to c/technology@beehaw.org
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[–] GameGod@beehaw.org 25 points 1 year ago

We already had this, it's called Intel Optane Persistent Memory and Intel killed it off last year: https://www.intel.com/content/www/us/en/products/docs/memory-storage/optane-persistent-memory/overview.html

The memory speed was slightly slower than DDR4 but the benefits didn't seem to outweigh the downsides. I think it probably kicked a lot of ass for specific use cases (eg. in-memory database that needs persistence), but the market was too small. Plus, SSDs are getting so ridiculously fast that it would put pressure on a product like this too.

[–] Catsrules@lemmy.ml 13 points 1 year ago (2 children)

Of course, this is still a new and emerging technology and it’s too early to say when we might see it in our devices, or how much it will cost.

Looks really cool, buy yeah my guess is i will cost to much to be viable for most things.

[–] moonsnotreal@lemmy.blahaj.zone 6 points 1 year ago

Maybe it could be good for moving and storing servers?

[–] weew@lemmy.ca 1 points 1 year ago* (last edited 1 year ago)

it'll hit business servers first... speed and power draw = profits. Even if they cost 1000x more than SSDs, the power savings and speed alone could pay for itself in a datacenter.

[–] shiveyarbles@beehaw.org 13 points 1 year ago (1 children)

Sounds like a niche use-case for pizza delivery drivers stumbling into cryo chambers

[–] lemmyingly@lemm.ee 3 points 1 year ago

But only if I get to look into the beautiful eye of my favorite purple haired friend

[–] brie@beehaw.org 10 points 1 year ago (1 children)

This sounds neat, but it also seems like it does not have much practical advantage over hibernation except faster wake.

[–] weew@lemmy.ca 11 points 1 year ago* (last edited 1 year ago)

The power draw and nonvolatility could mean it can replace SSDs and hard drives entirely. Just store everything in RAM.

[–] insurgenRat@beehaw.org 8 points 1 year ago (2 children)

This sounds like a giant security risk?

[–] FaceDeer@kbin.social 10 points 1 year ago (1 children)

Sounds more like a very small security risk, to me. For most people if someone steals their laptop it doesn't really matter what kind of RAM is in it.

If you're in some kind of high-security role then use a laptop with volatile RAM instead. Non-volatile will probably be more expensive than the old stuff for quite a while so it's not going anywhere.

[–] insurgenRat@beehaw.org 6 points 1 year ago (1 children)

Maybe, it depends how it works.

Memory is often unencrypted and/or contains encryption keys. Many programs rely on the assumption that it's cleared on powerdown for security.

Depending on how this memory enters the long term state it seems that a lot of legacy software might become vulnerable to a really simple attack.

Pulling the plug might no longer be something that forces someone to engage in rubber hose analysis.

[–] FaceDeer@kbin.social 3 points 1 year ago (1 children)

Many programs rely on the assumption that it’s cleared on powerdown for security.

In a world with ULTRARAM those programs will need to be rewritten to operate under new assumptions.

[–] insurgenRat@beehaw.org 4 points 1 year ago (1 children)

Sure of course of course but umm have you seen software?

There are still windows xp computers on the internet.

It's not insurmountable, and of course I have no idea if/how this will roll out.

Just it seems to mess with a rather deep assumption we have about how computers operate when we develop software and threat models.

[–] bedrooms@kbin.social 3 points 1 year ago

The better example is that there are still programs compiled in Win 95 running here and there if I'm correct.

[–] mp3@lemmy.ca 3 points 1 year ago (1 children)

Depends if the RAM is encrypted, and how secure the TPM is.

[–] insurgenRat@beehaw.org 2 points 1 year ago* (last edited 1 year ago) (1 children)

I admit to being out of the game for a while but how common is RAM encryption?

wouldn't the overhead violate half the point of RAM?

[–] d3Xt3r@lemmy.nz 1 points 1 year ago* (last edited 1 year ago)

There's always a tradeoff in computing between security v/s performance/overhead, so the value of it depends on your threat model, and the attack vectors you're expecting.

Anyways, RAM encryptions generally "available" in various forms, depending on the mobo, CPU, software used etc, but it's not commonly enabled/used. Most AMD boards (at least, mid-range and above should) have an option in the BIOS to enable Secure Memory Encryption (SME). This allows the OS to selectively encrypt memory pages, making use of a hardware AES engine that sits outside of the CPU.

There's also Transparent SME (TSME), which encrypts the entire memory and works completely independent of the OS and software. Usually only high-end/workstation boards have this, and it also requires a Ryzen PRO CPU. TSME also has a much lower overhead, I recall reading somewhere it's something like only 5%.

I believe Intel also has something similar, but I never looked into it.

AMD have a whitepaper available with an overview on how this stuff works, if you're interested: https://www.amd.com/system/files/TechDocs/memory-encryption-white-paper.pdf

[–] S13Ni@lemmy.studio 8 points 1 year ago

Shout out to whoever picked that thumbnail image.

[–] wrath-sedan@kbin.social 8 points 1 year ago (1 children)

Can’t wait for my ram to last 1000 years just for the hinge on my laptop screen to last 2 (guess what just broke on my laptop after 2 years)

[–] clb92@kbin.social 7 points 1 year ago (2 children)

guess what just broke on my laptop after 2 years

I'm guessing it was the floppy drive?

[–] mars296@kbin.social 9 points 1 year ago (1 children)

The whole thing is floppy now.

[–] I_am_10_squirrels@beehaw.org 4 points 1 year ago

That's what she said

[–] 01189998819991197253@infosec.pub 2 points 1 year ago

Nah. That thing will outlast us all

[–] beejjorgensen@lemmy.sdf.org 6 points 1 year ago

"Right. Now... what was I working on, again?"

[–] Roundcat@kbin.social 6 points 1 year ago (1 children)

So does it allow this by granting immortality or by necromancy?

[–] some_guy@kbin.social 4 points 1 year ago

By uploading your consciousness to the cloud. Basic plans start at $4.99/mo

[–] AnAngryAlpaca@feddit.de 6 points 1 year ago

I don't think a battery, soldering joints or displays would last that long...

[–] pirrrrrrrr@lemmy.dbzer0.com 5 points 1 year ago

Now... Let's see what 1000 years of cosmic radiation does to the data.

[–] CanadaPlus@lemmy.sdf.org 5 points 1 year ago (1 children)

I love the security implications of this. /s

[–] XTornado@lemmy.ml 1 points 1 year ago (1 children)

?

[–] CanadaPlus@lemmy.sdf.org 3 points 1 year ago (1 children)

So you know those encrypted files you might have? You know how your computer is able to display them? Yeah, you enter the passcode and then it and any information derived from it is (probably, barring special hardware) stored in RAM to in order do that. This isn't usually an issue because turning your computer off will quickly erase the RAM and it can no longer be used to open that file.

[–] XTornado@lemmy.ml 3 points 1 year ago* (last edited 1 year ago) (4 children)

I mean... this already happens now if you leave the PC open or in sleep, for example with bitlocker.

And I guess in this case it could allow when shutdown if the memory has not been cleared.... But most of the time that is not a problem, most people aren't attacked by pulling the info directly from the hardware.

And in case that is a possible attack, I expect a mechanism of the app(s) to clear that region on shutdown or whatever is done or even better maybe the OS would do it as part of the existing memory protection mechanisms. I mean most apps already clear the memory as soon as possible if it is not needed to avoid having secrets or unencrypted information on memory.

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[–] mojo@lemm.ee 5 points 1 year ago (2 children)

I don't understand the point of this. That's what the hard drive I for. The RAM is meant to be wiped.

[–] Llewellyn@lemm.ee 8 points 1 year ago* (last edited 1 year ago) (1 children)

RAM is not meant to be wiped. It's just we haven't found a way to make it constant, but still as quick as it is now.

[–] Chobbes@beehaw.org 6 points 1 year ago

Yeah. I mean, sometimes RAM getting “wiped” is a “feature”, e.g., you don’t want somebody to be able to pull information from RAM after you shut off your computer… but that’s not really what it’s designed for (and you can recover data from powered off RAM in some lucky cases). It’d be sweet if we could have fast non-volatile memory. Having a computer use 0 power when suspended and not having to worry about hibernating to disk would be sweet! I do kind of wonder about the security RAMifications of that, but I guess it’s not much worse than having a laptop suspended currently.

[–] explodicle@local106.com 3 points 1 year ago (1 children)

Wouldn't it kill your hard drive quickly if every bit in memory was constantly written there - if it was all virtual memory? I think of it like "stuff in my desk" vs "stuff on top of my desk", and now nobody mixes up the papers on my desk when I walk away.

[–] mojo@lemm.ee 3 points 1 year ago (1 children)

That's what RAM is. Following your analogy, you'll put stuff occasionally inside the desk when you're done with it, and keep working what's on your desk. I see persistent ram as like working inside the desk, which is a bit weird to me. Or a desk that just never gets cleaned up.

[–] explodicle@local106.com 2 points 1 year ago

That last one is how I see it too. Just never gets cleaned up.

[–] Bizarroland@kbin.social 4 points 1 year ago* (last edited 1 year ago)

I have to regretfully say I would have had an apocalypse bingo but I didn't have "Laptop of Dorian Gray" on my scorecard

[–] BuxtonWater@beehaw.org 4 points 1 year ago (1 children)

Perfect for when civilization collapses and we have to do some wasteland 2 shenannigans to get the lost knowledge of the past back by hoarding laptops.

[–] NaoPb@beehaw.org 2 points 1 year ago (1 children)

And then you find out they were mainly working from the cloud.

[–] pimento64@sopuli.xyz 2 points 1 year ago (1 children)

If everything stored solely in the cloud was suddenly lost forever, that would probably be a net boon for humanity.

[–] NaoPb@beehaw.org 1 points 1 year ago

True, true.

[–] gamey@feddit.rocks 2 points 1 year ago* (last edited 1 year ago) (1 children)

Our Families Windows XP Laptop had a RAM to storage feature that essentially did the same. I think Windows killed it off but if I had to guess it's just not a good idea to avoid rebooting properly so I really can't see the use for this.

[–] EinfachUnersetzlich@lemm.ee 7 points 1 year ago (2 children)

You mean hibernate?

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[–] pkulak@beehaw.org 2 points 1 year ago

I keep my encryption keys in ram. No thank you.

[–] 30p87@feddit.de 2 points 1 year ago (1 children)

So basically just a quicker SSD for systemctl hibernate?

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[–] Michal@discuss.tchncs.de 2 points 1 year ago

Have you tried turning it off and on again?

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