Re: Best ext hard drive interface (USB or FireWire) for MCE by John
John
Thu Mar 27 03:33:01 PDT 2008
On 27/3/08 00:30, in article uaO1GH6jIHA.3840@TK2MSFTNGP02.phx.gbl, "Cameron
Snyder" <dntbther@tellpacbell.net> wrote:
> USB 2.0 is technically faster than Fire wire (480 as opposed to 400
> respectively). Fire wire supposedly uses less CPU but shares the bandwidth
> with other FW devices, unlike USB. Get a HD that uses both interfaces. I got
> one that uses USB, Fire Wire and eSATA. I use the FW cuz my USB ports are
> full and I didn't want to risk going through a hub, and don't have eSATA at
> this time. It works great, BTW, on high definition recording and playing on
> my four-year old, mono-core system. So git it!
>
> "Paul" <pauldelange7@gmail.com> wrote in message
> news:33f4f454-79c9-4099-a69b-c6173e0bca12@e10g2000prf.googlegroups.com...
>> Need a bigger HD for my MCE to record HDTV but there's no room
>> internally. I know FireWire is faster then USB, but I'm concerned with
>> waking up from sleep mode also. Anyone have any experience with this?
>
Empirical (i.e. real world) usage has consistently shown that FireWire 400
(aka. IEEE 1394a) is faster than USB2. Besides what a lot of people forget
is that for quite some time it has also been possible to get hard disks with
FireWire 800 (aka. IEEE 1394b) interfaces and there is no way even the most
blatant anti-FireWire/pro-USB person can argue USB2 at a theoretical 480Mbps
is faster than FireWire 800 at a theoretical 800Mbps.
Without doubt however an eSATA connection would be even faster in real world
usage.
With regards to bandwidth sharing, if your computer has separate USB buses
for each socket then each socket will have 480Mbps of bandwidth. However if
you use a USB hub to connect the hard disk, then it will have to share that
480Mbps with other USB devices. The exact same thing applies to FireWire, if
each socket is on its own FireWire bus then each gets 400Mbps (or 800Mbps),
better quality PCI FireWire cards hopefully will be like this, although you
could use multiple cards. If you daisy-chain FireWire drives then they will
be sharing the bandwidth.