Re: [Thinkpad] 100GB drives nearly here

On Thu, 16 Sep 2004, Kris Steenhaut wrote:

> STeve Andre' schreef:
>
> >On Wednesday 15 September 2004 21:23, Chris Schumann wrote:
> >>Hitachi announced on Tuesday that they will be shipping a new series of
> >>drives that hold up to 100GB of data. They spin at 5400RPM and should be
> >>available by the end of the year.

> I do have now a Hitachi 80 Giga at 7200 rpm in my T41. It looks rather
> odd to me they will revert to 5400 for new 100 Giga disks. I even dare
> to say the 20 Giga extra isn't worth the price considered the drawback
> the device comes with.

Keep in mind that if the platter count is the same (which I have not
checked), a drive that holds 25% more data (100 = 80 * 1.25) should have a
25% higher sustained data transfer rate at the same speed because of the
increased data density. So a 100GB drive at 5400RPM should be 25% faster
than an 80GB 5400RPM drive.

But that also means a 100GB 7200RPM drive should be 25% faster than an
80GB 7200RPM drive! (and about 67% faster than an 80GB 5400RPM drive)

and doing more math than I need to shows the 100GB 5400 should be 94% as
fast as the 80GB 7200RPM drive, (5400/7200 * 100/80) so you wouldn't be
giving up much performance.

Chris Schumann

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Received on Thu Sep 16 15:43:25 2004