Is GDDR7 that's ECC then just the super well binned stuff (plus the ECC parts added) ? I've been wondering why we don't see more cards using it as they perform

Is GDDR7 that's ECC then just the super well binned stuff (plus the ECC parts added) ? I've been wondering why we don't see more cards using it as they perform pretty damn well. Take the Nvidia 6000 Pro Blackwell for example. The compute is insanely fast assuming you can fit what you need in 96GB of ECC GDDR7