On Mon, Aug 16, 2010 at 1:45 PM, onelucent <oneluc...@mac.com> wrote:
> These are compact, come in much larger sizes than the early days
> and can be purchased with 7200 rpm mechanisms.

FWIW, using a 7200 RPM drive as a USB 2.0 or even FW 400 attached
external drive doesn't really buy you anything extra.

Unless you use eSATA, USB 3.0, or FW 800 the throughput of the drive
is going to be limited by the bus used to connect the external drive.
It's sort of like buying a performance car that you know you'll only
drive around town and never take over 45 MPH.

I don't think there's any reason to pay extra for 7200 RPM if you know
you'll only use it in a context where the performance of a recent 5400
RPM with high bit density platters could be just as good.

-irrational john

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