I mean the only place where full ECC is not common in consumer computers is DRAM. Every CPU cache layer has ECC and the registers have checksums. SSDs use ECC

I mean the only place where full ECC is not common in consumer computers is DRAM. Every CPU cache layer has ECC and the registers have checksums. SSDs use ECC. It's hard to say ECC has fallen out of fashion when the number of subsystems using it has increased. DRAM's lack of commonplace ECC is a real problem. I think it draws enough attention that maybe things will start steering in the right way soon.