Archived from groups: alt.comp.hardware.homebuilt (
More info?)
On Fri, 12 Aug 2005 07:57:28 -0700, "John Weiss"
<jrweiss98155(at)@[nospam]comcast(dot).net> wrote:
>"kony" <spam@spam.com> wrote...
>>
>> There are none for either, but why would you want to pay a
>> premium for a 10K drive to put it on a slow interface like
>> Firewire?
>
>Hmmm... Nominal Xfer rate for a single 10K Raptor is around 40-50 MB/sec.
>Advertised Xfer rate for Firewire is 400 Mbps or approx. 40 MB/sec. If he has
>the new 800 mbps Firewire, it is faster than the Raptor...
>
"Nominal" is pretty meaningless here. A Raptor can and does
transfer over 65MB/s in many typical short transfers and the
high RPM / cost is mostly to reduce latency. Using an
additional bus like firewire limits the benefit.
You try to argue a downgraded transfer for the HDD but then
only the optimal theoretical of a bus speed throughput, "on
paper" transfer for firewire. You haven't actually
benchmarked firewire on externals have you? There is far
more to performance than merely the clock rate of one bus
along the transfer chain.