The Underscore Archives

Richard Price wrote:
> 2008/4/13 Simon Dingley <newsgroups at creativenrg.co.uk>:
>  It seems
>   
>>  that there are plenty 3.5" running at 7200RPM but when you find a 2.5"
>>  of equivalent size the speeds drop to 5400RPM - is there a reason for
>>  this?
>>     
>
> Power consumption, heat and really the fact that it isn't as needed -
> on a 2.5" drive, the data density is higher than on a 3.5" drive
> (through either higher density platters, or more platters and more
> heads), which means in real terms a 2.5" 7200rpm drive is a better
> performer than a 3.5" 7200rpm drive.  Thus you can largely get away
> with 5400rpm drives.
>
> Regards
> Richard
Thanks for the clarification on that - makes sense.