I could say something about the TPU review, but I don't want to comment on it here. Those who are into DDR5 OC probably know what I mean.
Just a quick info:
6800MT/s can make most ASRock, ASUS, Gigabyte or MSI motherboards with the Z790 chipset.
7200MT/s can make most ASUS, Gigabyte or MSI motherboards with the Z790 chipset.
7600MT/s can make most more expensive ASUS, Gigabyte or MSI motherboards with the Z790 chipset.
7800MT/s can make only a few ASUS or MSI motherboards with the Z790 chipset.
8000MT/s+ can make literally 3-4 ASUS and MSI motherboards. Listed on QVL for DDR5-8000 kits is almost only ASUS Apex.