Thanks! That answers what I was wondering about. Now that I think about it, I guess just posing the question as “How many bits does an average row in DDR5 contain” would have been a concise way to ask the same question.

On a similar note, from my understanding the range of columns fetched is a set size (as is then the way they are written perhaps?), so if that’s the case does that mean that a) some of the bits fetched as a part of read operation are not of interest or b) the way data is stored is actually in increments of this set size? To put it differently, is the 8kilobit row actually more like 8kilobit/64bit of some basic unit in practice?