[tssva]

They don't actually claim it is running at 5400 RPM. They claim performance is in the 5400RPM performance class. In other words it will perform similar to a drive running at 5400RPM. Nowhere do they mention that it runs at 5400RPM.

[mijoharas]

I stand corrected, you're right. Ref from link

> Looking at the spec sheets provided by WD, it seems they don't really list the rotational speed

I still think it's somewhat disingenuous, but my comment above was wrong.

[srtjstjsj]

According to the linked post, "5400rpm class" was a lie too.