[mijoharas]

I mean... doesn't that same sheet of published specs state that it's running at 5400 RPM?

If they lie about that on their spec sheet, how can you believe the power/noise levels written on there?

Also, I've always had a fair amount of scepticism for digital product spec sheets. I've been looking for a projector with low input lag for a while, and the measured value has constantly been way off the claimed value (> factor of 2). Admittedly, this seems to most often be the case with some of the cheaper chinese brands, but definitely not exclusively.

[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.