New 2.5" hard drive for laptop - What to compare?

Posted by TFM on Super User See other posts from Super User or by TFM
Published on 2010-06-14T10:31:36Z Indexed on 2010/06/14 10:43 UTC
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laptop

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hard-drive

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2.5

I'm having trouble finding a new (bigger) hard drive for my laptop.

I came across some criteria that I never thought about before, while I was checking a price comparison site. Of course, that made me more confused.

First of all, I will probably go with something above 250 GB, and at least 16 MB cache.

Now the confusing part: Most new drives are 7200 RPM, as opposed to good old 5400 RPM. 7200 RPM used to mean extra heat, but suddenly it's almost impossible to find a 5400 RPM in 2.5". What did I miss?

Second question: Internal data transfer rate. My old drive has a rate of around 60 MB, but new drives have values like 100 MB or more (e.g. 150 MB). How important is this "internal data transfer rate"?

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