[andy_ppp]

Can someone tell me how many errors over the past 10 years or so would have been fixed by ECC memory. I've no idea at all how much better it would be and what the current error rate it prevents is? It sounds more nice to have than vital? Is there a performance cost to it at all?

[justin66]

Arstechnica writeup of a Google study: https://arstechnica.com/business/2009/10/dram-study-turns-as...

[8draco8]

https://blog.codinghorror.com/to-ecc-or-not-to-ecc/

[acoye]

Would prevent Rowhammer attacks.

[anoother]

DDR4 is innately much more resilient to rowhammer than previous standards.

[chithanh]

More resilient maybe, but not Rowhammer-proof: https://arstechnica.com/security/2016/03/once-thought-safe-d...

[detaro]

Not completely, since those can produce multi-bit flips.

[justin66]

With SECDED ECC, in the event that two bits are flipped, the system can detect this and halt.