3.5" 7,200RPM vs 2.5" 7,200RPM

I'm considering using a 2.5" 7,200RPM as a primary C: drive for the OS
+ applications, would it run as fast as a 3.5" 7,2000RPM? i.e. latency
and throughput. I'm aware it's more expensive per GB but that doesn't
affect since it's only for the OS installation and not for massive
storage space. Would I be correct it that it would use less power and
generate less heat also?

<cashcream55@googlemail.com> wrote...
> I'm considering using a 2.5" 7,200RPM as a primary C: drive for the OS
> + applications, would it run as fast as a 3.5" 7,2000RPM? i.e. latency
> and throughput. I'm aware it's more expensive per GB but that doesn't
> affect since it's only for the OS installation and not for massive
> storage space. Would I be correct it that it would use less power and
> generate less heat also?

First, it may depend on the specific HD design. The advantage of higher linear
speed on the outer edge of the 3.5" HD may be offset by the decreased time to
track from the outermost to innermost cylinders. In general, though, I don't
think 2.5" notebook HDs are faster than comparable 3.5" desktop HDs.

Yes, 2.5" HDs are usually designed for lower power consumption. Some will even
operate on a self-powered USB connection, which is 2.5 Watts (5V @ 500 ma). The
Seagate Momentus gen 3 notebook HD draws 5 Watts max and 2.1 Watts avg, while
the 3.5" Barracuda gen 11 HDs draw 38 Watts max and 8.5 Watts avg.

HOWEVER, notebook HDs are designed for 5V power, and desktop HDs are designed
for 12V power. Make sure your MoBo has the proper interface for a 2.5" HD...

> Seagate Momentus gen 3 notebook HD draws 5 Watts max and 2.1 Watts avg, while
> the 3.5" Barracuda gen 11 HDs draw 38 Watts max and 8.5 Watts avg.
> HOWEVER, notebook HDs are designed for 5V power, and desktop HDs are designed
> for 12V power. Make sure your MoBo has the proper interface for a 2.5" HD...

For SATA hard disks, both 2.5" and 3.5" are the same. So...?

--
@~@ Might, Courage, Vision, SINCERITY.
/ v \ Simplicity is Beauty! May the Force and Farce be with you!
/( _ )\ (Xubuntu 8.04) Linux 2.6.26
^ ^ 10:37:01 up 3 days 14:03 3 users load average: 1.07 1.03 1.01
? ? (CSSA):
http://www.swd.gov.hk/tc/index/site_...ub_addressesa/

Man-wai Chang ToDie (33.6k) wrote:
>> Seagate Momentus gen 3 notebook HD draws 5 Watts max and 2.1 Watts
>> avg, while the 3.5" Barracuda gen 11 HDs draw 38 Watts max and 8.5
>> Watts avg.
>> HOWEVER, notebook HDs are designed for 5V power, and desktop HDs are
>> designed for 12V power. Make sure your MoBo has the proper interface
>> for a 2.5" HD...
>
> For SATA hard disks, both 2.5" and 3.5" are the same. So...?
>

,.. I meant their plugs.

--
@~@ Might, Courage, Vision, SINCERITY.
/ v \ Simplicity is Beauty! May the Force and Farce be with you!
/( _ )\ (Xubuntu 8.04) Linux 2.6.26
^ ^ 10:44:01 up 3 days 14:10 4 users load average: 1.00 1.02 1.00
? ? (CSSA):
http://www.swd.gov.hk/tc/index/site_...ub_addressesa/

On 18 Jul, 03:38, "Man-wai Chang ToDie (33.6k)"
<toylet.toy...@gmail.com> wrote:
> For SATA hard disks, both 2.5" and 3.5" are the same. So...?

So a 2.5" SATA drive will use the same power connector from my PSU as
my current 3.5"?

> So a 2.5" SATA drive will use the same power connector from my PSU as
> my current 3.5"?

Yes, and that's why we have this:

http://www.century.co.jp/products/s-razoku/crosu2.html
http://usb.brando.com.hk/prod_detail.php?prod_id=00469

--
@~@ Might, Courage, Vision, SINCERITY.
/ v \ Simplicity is Beauty! May the Force and Farce be with you!
/( _ )\ (Xubuntu 8.04) Linux 2.6.26
^ ^ 18:35:01 up 3 days 22:01 3 users load average: 1.00 1.03 1.00
? ? (CSSA):
http://www.swd.gov.hk/tc/index/site_...ub_addressesa/

On Fri, 18 Jul 2008 18:38:29 +0800, "Man-wai Chang ToDie (33.6k)"
<toylet.toylet@gmail.com> wrote:

> > So a 2.5" SATA drive will use the same power connector from my PSU as
> > my current 3.5"?
>
> Yes, and that's why we have this:>
> http://www.century.co.jp/products/s-razoku/crosu2.html
^^^WARNING: the illustrations show the cover of the drive
being pressed on. This is a no-no.

> http://usb.brando.com.hk/prod_detail.php?prod_id=00469