I don't think it is a valid assumption that it will be 'faster' simply because it has a higher RPM.
And why would that be? Unless of course, one can order all the writen bits onto the Hard Drive to be sequential and thus reduce seek times or latency, it will have an effect of being "faster"
Well, yes. If you have identical densities.
IIRC my (top of the range, at the time) powerbook came with a slower spinning hard drive than the lower models because it out performed them. The explaination was something to do with density...
Density is the amount of bits which is forced into 1 sector/cylinder of
the drive. The more bits there are, the higher the density (DUH!). The
density does not affect the "fast" but effect more towards the capcity
of the drive.
Well, apparently, the higher density does affect the rate at which they can are read. I mean, if two drives have the same rotation speed, but one has a higher density, then it can read more data.
In any case, I found a web page to show what I am talking about :
http://www.barefeats.com/pb12.html
"In the Random READ 5400rpm drive, to our surprise, was MUCH faster than the 7200rpm drive."
So, it's not a foregone conclusion that the higher rpm drives will give you a higher performance.
I'd say that it's fair to say that this is an exception though...
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