~misfit~ wrote:
Sure how many you want to see? I can find dozens...
http://www.tomshardware.com/storage/20030411/wd_external_hd-09.html
The performance of the Western Digital external combo drive in our
tests displayed a trend that we have repeatedly observed with other
hardware components: you can achieve a substantially better
performance with FireWire than with USB 2.0, even though USB offers a
theoretical throughput of 480 Mbps compared with "only" 400 Mbps with
FireWire.
http://www.techtv.com/screensavers/supergeek/story/0,24330,3393571,00.html
Don't be confused by the rated speeds you see emblazoned across USB
2.0 and FireWire product boxes. Despite USB 2.0's 80 Kbps speed
advantage over FireWire, our testing showed that the additional
overhead of USB 2.0 made it slower than FireWire. For high-bandwidth
devices such as external hard drives, the difference was as high as
70 percent.
http://www.techtv.com/screensavers/supergeek/jump/0,24331,3393574,00.html
Benchmarks between the two interfaces.
http://www.tomshardware.com/storage/20030411/wd_external_hd-09.html
The performance of the Western Digital external combo drive in our
tests displayed a trend that we have repeatedly observed with other
hardware components: you can achieve a substantially better
performance with FireWire than with USB 2.0, even though USB offers a
theoretical throughput of 480 Mbps compared with "only" 400 Mbps with
FireWire.
http://www.csun.edu/~vcact00f/311/termProjects/700class/USB2.0vsFireWire.pdf
Some paper on the differences between them.
Here's a quote from PC magazine.
"Though USB 2.0 is rated at a higher throughput speed, FireWire
delivered faster performance on external hard drives when connected
to a desktop."
http://www.frozentech.com/article.php?story_id=27
From these results we see that Firewire trounced USB2 in two ways.
The first was that data was read almost twice as fast as USB2.
Writing data occurred at similar speeds using both Firewire and USB2.
The second advantage appeared from the CPU utilization. On both
computers, Firewire used a significantly less amount of the CPU than
USB2 when transferring data. According to these benchmarks, Firewire
appears to be the better choice for an external hard drive.
http://www.kcgeek.com/archives/features/ask_meanie_usb_vs_firewire_omelettes
_and_add/031302.html
FireWire can sustain peak throughput indefinitely, without taxing
your CPU, and is inherently peer-to-peer. USB2.0 is not inherently
peer-to-peer and requires significantly more CPU to maximize
throughput. 1394 is generally regarded to be a superior interface,
somewhat analagous to being the SCSI to USB2.0's EIDE.
http://www.macopinion.com/columns/macskeptic/02/02/08/
So where does Firewire fit in? Well, there are things Firewire can do
which USB 2.0 either can't do, or can't do as easily. It's a
peer-to-peer protocol while USB is a master-slave protocol (at least
until USB On-The-Go becomes more prevalent) and USB isn't designed
for high performance isochronous tasks. Thus a USB 2.0 hard drive is
fine for typical use, most business use other than high performace
databases and so on while a Firewire hard drive will be the choice
for high performance systems like video capture and high volume
databases. The best analogy is IDE vs SCSI where USB is IDE and
Firewire is SCSI.
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Now it's your turn (after calling my post bullshit), -you- post info
that claims USB has less overhead and faster -throughput- than
firewire. The only thing USB2.0 has going for it is backwards
compatibility and it's cheap to implement. If someone has to buy a
card they are MUCH better off going with firewire if the devices they
are going to use supports either one.