Products > Security

Fuses coming to CPUs... or not

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PKTKS:

--- Quote from: wraper on March 14, 2022, 04:50:33 pm ---Intel laptop CPUs were vendor locked for years.

--- End quote ---

more or less... this feature has been around since UEFI  appeared..

But not that deep extent of trouble on the CPU market..
In particular MOBOS with long list of CPU support
and second hand CPUs market..

I am day by day more and more suspicious about UEFI and how bad it has been more a  trojan of particular bad agendas..

Paul

MrMobodies:

--- Quote ---The basic premise of the technology is that it blows field-programmable fuses that lock an AMD CPU to the vendor’s system. The concept is to create a permanent platform so the CPU must align with the motherboard for security purposes. Many of our readers are rightfully nervous about this. One cannot tell a CPU has been PSB fused and so purchasing CPUs on the secondary market can be perilous. If, for example, one purchases a fused Lenovo or Dell AMD EPYC CPU and tries to put it in a non-Lenovo or Dell system it should not work.
--- End quote ---

They might as well just solder it than use a socket.

PKTKS:

--- Quote from: MrMobodies on March 14, 2022, 05:17:47 pm ---
--- Quote ---The basic premise of the technology is that it blows field-programmable fuses that lock an AMD CPU to the vendor’s system. The concept is to create a permanent platform so the CPU must align with the motherboard for security purposes. Many of our readers are rightfully nervous about this. One cannot tell a CPU has been PSB fused and so purchasing CPUs on the secondary market can be perilous. If, for example, one purchases a fused Lenovo or Dell AMD EPYC CPU and tries to put it in a non-Lenovo or Dell system it should not work.
--- End quote ---

They might as well just solder it than use a socket.

--- End quote ---

On the BGA  segment that was never a problem...  up to now..

The overall  net end result  by locking MOBO + CPU + VENDOR.. is orders of magnitude more restrictive  by this way..  they will not even need specific BGA layouts..
they can reuse spcific mobos with sockets for that simple locking

They will LOCK MOBO CPU VENDOR AND  particular OS versions with a simple FUSE instead

Things have reached  crossroads for the x86 platform..

Paul

BradC:

--- Quote from: PKTKS on March 14, 2022, 01:59:55 pm ---Today  I found myself reading all these tech tips and stuff that nowadays pop everywhere thanks to tubers devotes...

This folk and others raised a serious concern as if FUSES are now integrated into CPUs as well and no longer a premise of some MCUs AVRs...

https://linustechtips.com/topic/1404447-yikes-lenovo-is-vendor-locking-amd-ryzen-cpus-via-psb/

In particular LeNovo seems to be using that filthy trick widespread across the every_day_less_trusty  UEFI boots..

https://wccftech.com/lenovo-vendor-locking-ryzen-based-systems-through-amd-platform-secure-boot-in-the-client-pc-segment/

Any reasonably reliable information welcome as well as some sort of precautions of the second hand CPU/MCU market...
--- End quote ---

Don't buy "second hand" cpus from shitty vendors. Simples...

Is it a crappy thing to do? Probably. Frankly if you have an honest vendor then you know what you are getting. If you have a dishonest vendor, then it is what it is. Next you'll be blaming Samsung for selling 1200mAH 18650 cells that get shrinkwrapped "Trustfire 6500mAH".

Frankly if Lenovo wants an AMD processor that is vendor locked to a key then it's on Lenovo rather than the people they did what they paid them (probably a crapload of money) to do. Of course if AMD said to Lenovo "We'll see you these processors at half price if you put this key in your BIOS and let us lock them to your systems" then it's still on Lenovo.

PKTKS:

--- Quote from: BradC on March 15, 2022, 01:48:32 pm ---
--- Quote from: PKTKS on March 14, 2022, 01:59:55 pm ---Today  I found myself reading all these tech tips and stuff that nowadays pop everywhere thanks to tubers devotes...

This folk and others raised a serious concern as if FUSES are now integrated into CPUs as well and no longer a premise of some MCUs AVRs...

https://linustechtips.com/topic/1404447-yikes-lenovo-is-vendor-locking-amd-ryzen-cpus-via-psb/

In particular LeNovo seems to be using that filthy trick widespread across the every_day_less_trusty  UEFI boots..

https://wccftech.com/lenovo-vendor-locking-ryzen-based-systems-through-amd-platform-secure-boot-in-the-client-pc-segment/

Any reasonably reliable information welcome as well as some sort of precautions of the second hand CPU/MCU market...
--- End quote ---

Don't buy "second hand" cpus from shitty vendors. Simples...

Is it a crappy thing to do? Probably. Frankly if you have an honest vendor then you know what you are getting. If you have a dishonest vendor, then it is what it is. Next you'll be blaming Samsung for selling 1200mAH 18650 cells that get shrinkwrapped "Trustfire 6500mAH".

Frankly if Lenovo wants an AMD processor that is vendor locked to a key then it's on Lenovo rather than the people they did what they paid them (probably a crapload of money) to do. Of course if AMD said to Lenovo "We'll see you these processors at half price if you put this key in your BIOS and let us lock them to your systems" then it's still on Lenovo.

--- End quote ---


Well ...  it would be  great .. in an ideal world *IF* the prices would be reasonably equivalent all around crazy world...

It just happens that here taxes are aprox. 80% (obligatory included shipping, insurance if any and freight) plus the international value..

So anything you see EBAY or ALI or .. Newegg.. has at least 80% margin from taxes..

Currently BR = 5x U$ .. so the second hand market will not vanish anytime soon..

And i expect things got really skyrocket with such nonsense less value products..


Attached the values as of TODAY for some CPUs..

No it just makes a lot of sense wait the prices settle down to reasonable sane values..
BR-customs do not take for granted that kind of products..

Consumer theory from other markets are just idiot nonsense with such taxes..

ALAS BTW that sort of locked OEM products will just create a generation of wasteland non repairable boxes...  discarded by OEM end users large contractors..

May be... may be.. the ultimate goal :o

Paul

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