So you admit you were wrong and you're now confirming what I said? Good. Although you did go back and edited your old posts to make yourself look less clueless, but whatever.
Like I said, higher bandwidth, and more efficient bandwidth utilisation, which helped improve scaling of multithreaded memory intensive FP tasks in DDR5 compared to DDR4, as Anandtech said so in the review.
But the CPU and platform Z690 is dual channel ... I know DDR5 has taken the full channel and doubled it inside the modules, but this halfs the data to both, but again is a more efficent way as "one channel" can read while other is writing for example.