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AMD silently removes memory encryption from consumer Ryzen CPUs

https://www.tomshardware.com/pc-components/cpus/amd-silently-removes-memory-encryption-from-consumer-ryzen-cpus-leaving-users-unaware-that-they-may-be-vulnerable-security-feature-vanishes-after-newer-agesa-firmware-amd-engineers-go-radio-silent-when-pressed-about-the-change
51•lompad•1h ago

Comments

lompad•1h ago
Any idea what's happening? This sounds _bad_.
ykonstant•53m ago
I would also like to know. Surely some people here have at least second-hand knowledge, and silence can sometimes be deafening.
themafia•43m ago
> To be fair to AMD, there is no clear indication that the company ever publicly advertised TSME as a consumer Ryzen feature.

A feature that was possibly accidentally enabled on consumer chips is now being disabled. I would guess that the number of owners of consumer chips who also relied on them for encryption is exceedingly small.

The primary concern persists. The manufacturer has an exceptional amount of control of the state of your CPU most of which you cannot change and an unknown chunk of which you cannot even see. We are sort of playing in a fools paradise.

willis936•32m ago
How can manufacturers simultaneously have exceptional control over flags and not enough control to know what flags are enabled on their shipping products?

They either have that control or they don't.

lmz•27m ago
They always had control. Awareness is a different thing. You could just as well ask "if you've written every line of code, why did you write that bug?".
Ygg2•13m ago
To be fair same can't be said of ECC, even though ECC should be basic feature out of the box.
voxadam•28m ago
Market segmentation.
ZiiS•45m ago
If it can be silently removed was it a security feature?

Whilst I hate companies paying engineers to make things worse just to segment their market; I am not really seeing this as an important feature outside the data-center? If an evil-maid has hardware access they hack the USB and/or PCI not the RAM surely?

rekttrader•28m ago
Hint: NSA said no.
garganzol•20m ago
For what it's worth, RAM encryption belongs to professional SKUs. It's the right business decision that should have been made from from the very beginning.

For most consumer users, RAM encryption primarily adds power consumption and heat generation while providing little practical benefit. They simply don't face many of the threat vectors and attack scenarios that certain industries and enterprise environments must contend with.

rubyn00bie•11m ago
This is an absurd take since the referenced chips in the article are all desktop parts, and the power usage is dwarfed by any “modern” (within the last five years) GPU.

There are many people, myself included who opt to use security features like this. All this does is reduce security for folks without any legitimate reason. “Power consumption” is absolutely not a valid excuse to completely disable it.

I’ve been a fan of AMD for a while now but they’re really jumping the shark these days. It’s a real shit situation we’re all in because of the lack of competition in consumer CPUs. I can only hope things like RISCV take off sooner than later.

miga•17m ago
It is sad that once again we will be exposed to more criminals trying to steal our data. Memory encryption not only allows to secure memory from physical "cold RAM", but also prevents loss of encryption keys as it hides the content during transfer.
thg•16m ago
This was never marketed as a feature of the consumer CPUs and if some malignant actor does get physical access to my (consumer) hardware, then them being able to read out bytes through cryo-freezing the RAM really isn't high up on the list of things I'm going to worry about.
Elfener•12m ago
I would be fine with this if it meant CPUs became slightly cheaper, but we know that's not going to happen.

And there's been talk that now the so-called "AI companies" will start using more CPUs as well, due to "personal agentic agents", so I hope that people won't be priced out of CPUs too...

shiiiit•4m ago
This will be re-added in a few years. The current flip-flop is just enshittification.

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