I would like to clarify this again, as I am also looking for an HDD myself. Before the rebranding of WD, there were Blue and Green. The Blue was only available with 1 TB with one platter and therefore it could score in speed. Now all Greens have been renamed Blues. The 1TB Blue version is still the old Blue and runs at 7200. All the other Blues are the Greens, so to speak, and run at 5400. WD itself no longer offers the old 1TB Blue and has taken it out of its range.
As far as I know, the Blues only have 5400rpm. I recommend that you always check the information from Digitec against the manufacturer's website. It can always happen that you make mistakes when you copy and paste so many products that you offer.
It might be worth reading this WD forum article, apparently WD simply added the Black label to the old 1TB Blue disk, so the 1TB Black is the previous slow Blue disk. This only applies to the 1TB disks, the 2TB and larger are the true fast Black disks. That's why I bought the 2TB Black.
https://community.wd.com/t...