From: Rich Gauszka 

John Beamish wrote:
> http://www.wdc.com/en/products/products.asp?driveid=314&language=en
>
> 5400 rpm, though.
>
> On Tue, 22 May 2007 15:46:11 -0400, Rich Gauszka
>  wrote:
>
>> http://www.extremetech.com/article2/0,1558,2134561,00.asp?kc=ETRSS02129TX1K0
000532
>>
>>
>> Western Digital said Monday that it has begun shipping a 250-Gbyte
>> version
>> of its Scorpio 2.5-inch disk drive, pushing notebook PC storage
>> capacities


Yep - but Seagate's 5400 rpm Momentus drive beat out Hitachi's  7K100 7200
rpm drive  in quite a few benchmarks

http://techreport.com/reviews/2006q1/mobile-hdds/index.x?pg=1

conclusion

http://techreport.com/reviews/2006q1/mobile-hdds/index.x?pg=15

Our test results show very clear performance differences between the
2.5" mobile Serial ATA hard drives we assembled. At times, those
performance differences were surprising, as we certainly didn't expect to
see Seagate's Momentus 5400.2 beating Hitachi's Travelstar 7K100 in so many
tests. We also didn't expect the 7K100 to falter so much in IOMeter, or for
either Travelstar to perform so strongly in our iPEAK multitasking tests.
Those iPEAK results in particular make it clear that the Travelstar drives
are capable of spectacular performance. However, whatever caching and
command queuing optimizations cause them to do so well in our multitasking
tests appear to be hindering performance in other applications.

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