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Which HDD is better?

Last response: in CPUs
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February 3, 2012 6:31:31 PM

Seagate 250 GB HDD Internal Hard Drive (ST250DM000)


vs


Seagate 250 GB HDD (ST3250318AS)


Which one is better in terms of performance?

More about : hdd

a c 203 à CPUs
February 3, 2012 6:38:16 PM

ST250DM000 would be my 1st choice.
16MB cache and SATA III
vs 8MB cache and SATA II for the ST3250318AS
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a c 203 à CPUs
February 3, 2012 6:39:54 PM

Actual performance? Probably close enough to identical that only a HDD / storage benchmark test could tell the difference.
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February 3, 2012 6:42:51 PM

Q Whats the better HDD ?

A The cheaper one
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a b à CPUs
February 3, 2012 7:18:12 PM

Definitely the ST250DM000. It's a newer model than the other one.

ST250DM000 has one disk and read/write head(specifications):
http://www.seagate.com/docs/pdf/datasheet/disc/barracud...

ST3250318AS has two disks and three read/write heads(specifications):
http://www.seagate.com/docs/pdf/datasheet/disc/ds_barra...

More disks and read/write heads are worse. That means density is lower thus it's slower, uses more power per GB, it's less reliable, and it's heavier.
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