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by drzaiusapelord 1019 days ago
Wikipedia: Unlike DDR4, all DDR5 chips have on-die ECC, where errors are detected and corrected before sending data to the CPU. This, however, is not the same as true ECC memory with extra data correction chips on the memory module.

So I'm not sure how this works, because I'm not sure if "true" ECC is better/worse/same as on-die ECC. A casual googling shows on-die to have more advantages.