August 26, 20223 yr I have currently DDR4 ECC EUDIMMS in my system and never noticed ECC kicking in in my logs. What is you opinion on next gen Ryzen with DDR5? Is the on-die ECC enough to be safe from bitrot and thus any DDR5 is fine home server or is the cost of full blown ECC worth it?
August 26, 20223 yr From what I understood, the on-die ECC that is standard on DDR5 is not proper ECC, just a way for manufacturers to overcome limitations of this new generation. Proper ECC should be paired with ECC checks from the memory controller (on the CPU nowadays). But I cannot find the source I read/watched about this.
August 26, 20223 yr Author I am looking into this https://users.ece.cmu.edu/~omutlu/pub/memory-errors-at-facebook_dsn15.pdf It appears that bank errors are quite common and I am not sure, that those can be corrected by on-die ECC.
August 26, 20223 yr One of the problems with on-die ECC is that it won't report a problem if there's is one, while normal ECC does.
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