I read it to say that on die ecc is recommended but that dimm-wide ecc is still optional. And now you have 8 bits of ecc per 32 data versus older DDR having 8

I read it to say that on die ecc is recommended but that dimm-wide ecc is still optional. And now you have 8 bits of ecc per 32 data versus older DDR having 8 bits of ecc per 64 data. Hence the cost for dimm-wide ecc is going up.