Subj : Re: Any sign of notifiable ECC support on Pi 5 or CM5?
To   : All
From : The Natural Philosopher
Date : Wed Dec 03 2025 14:37:56

On 03/12/2025 14:18, druck wrote:
> On 01/12/2025 21:16, James Harris wrote:
>> To make a NAS / server I am looking for a Raspberry Pi with ECC support.
>>
>> I gather that the Pi 5 and the CM 5 use RAM which has internal ECC. 
>> That's good. But do they inform the OS of when there are corrections 
>> and uncorrectable errors?
>>
>> Have you guys any idea as to whether the OS running on the Pi5 or CM5 
>> will be able to tell whether RAM has had errors or not?
> 
> As far as I know it's only for error correction within the RAM 
> controller, and not reported to the OS. There is a possibility the SOC 
> might know about it via some proprietary Broadcom mechanism.
> 
That is my impression too, based on admittedly sketchy data.
Lets face it at that level, ecc will simply make slightly dodgy ram rock 
solid and merely postpone the day when there is a kernel panic due to 
corrupted RAM.

I cant see than knowing about it helps much.


> I have found a webpage where some idiots attempting to fry a Pi 5 by 
> running AI on it without a cooler got a fatal ECC error, but my money is 
> on they just hallucinated the entire thing.
> 
Well indeed.

The internet may be made of cats, but these days its full of 
(commercially sponsored and politically motivated) lies.



-- 
The higher up the mountainside
The greener grows the grass.
The higher up the monkey climbs
The more he shows his arse.

Traditional


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