Should I use ECC RAM for my validator node?

Yes, you should. While not mandatory, running without ECC RAM risks memory errors that can cause missed attestations, invalid blocks, or accidental equivocation—leading to real penalties. Consumer DDR5 has only on-die ECC, not full error correction. The $50-100 extra for ECC is trivial compared to the cost of a slashing event or inactivity leak, especially if you’re validating serious money. Don’t save pennies on the thing keeping your node honest.