Originally posted by Zammy-Sam
...is there any device out there supporting firewire800? I am just wondering why they didn't use USB2.0? That would have been much smarter than firewire800, if you ask me. And the disc couldn't handle 100MB/sec at all, eventhough the ide-cable would...
So? Why firewire800 than?
I can't believe Apple already added Firewire 800 to their lineup! That's awesome! I'm so happy!
First off, USB 2.0 is already inferior to Firewire 400, especially for applications requiring guaranteed delivery and total reliability. Check out tomshardware's review of the two standards:
"the main application for FireWire was real-time data transfer, with digital video, for instance. This points us to exactly the advantage that FireWire has to offer, because the data stream must remain uninterrupted with such applications. "
and
"The advantages offered by the FireWire protocol cannot be used by scanners, digicams, DSL modems or joysticks. On the other hand, USB 2.0, in its current form, could never deliver continuous streams of data, which are required for hard disk recording and video applications."
http://www6.tomshardware.com/mobile/20020827/index.html
So basically, USB (1 or 2) doesn't deliver in many applications that Apple is focusing their digital hub strategy around. On the other hand, Firewire always delivers but often some of it's coolest features aren't taken advantage of. However, if you've got Firewire already for the applications that do use it, there's absolutely no reason that you need USB 2.0. USB 1 is still essential because of its super low cost to implement in devices, and the PB has USB 1. Firewire can replace USB 2.0, but USB 2.0
can't replace Firewire. Of course, realistically, the PC world will be as slow as ever to jump on the innovation train and there will be lots of peripherals, like cameras, out there that only have USB 2.0, I'm sure. So it would be nice for Apple to add USB 2.0 just to ensure compatibility with the sluggish PC peripheral world. However, USB 2.0 hasn't even really caught on fire (in terms of devices available and people that have it) yet in the PC world, so Apple still has a good amount of time to add this. More important in my mind is that Apple drive innovation and plan for the future and their awesome digital hub strategy, which is what Firewire 800 does. Firewire isn't just faster than USB, it's a far superior technology.
Think big, think this: Your house is wired with Firewire 800 ports everywhere. Every device, every digital toy, communicates with each other. Wireless Firewire arrives and your TV, Tivo, iPod, DVD Player, PDA, Audio system, telephone,
everything talks over the same single line (wired or wireless) to your desktop or laptop computer. And with tcp/ip over firewire you don't even need ethernet cables and you maintain compatibility. Cool! There's so many applications for that capability, I won't even start! And even better, firewire, unlike USB, allows devices to talk directly to each other without needing a host (aka a desktop/laptop computer) and enables peer-to-peer networking among
devices so your Phillips receiver can tell your iPod what to do, and etc. Finally, you
must have guaranteed data delivery, which is the nail in the coffin for USB 2.0 in such applications.
Why do we need firewire 800 instead of 400? Firewire 800 is perfect for the digital hub not only because it is faster, but because of much longer possible cable lengths -- up to
100m per hop (between devices) compared to
4.5m per hop with Firewire 400!!! Try wiring a house or connecting lots of equipment with a maximum cable length of 4.5m! As for speed increase, remember that theoretical maximums are different than actual maximums and that today's hardrives push firewire 400 to its limit
today. Hopefully, harddrive speeds will soon eclipse firewire 400 capability completely. And besides having just a single harddrive eating up all the bandwidth, think about multiple devices, like I mentioned above, using the bus at the same time. Talk about the need for speed! Apple will use Firewire 800 to take the digital hub strategy to the next level.
I still hope they include USB 2.0 someday, but I'm much more pleased to see Firewire 800 than I would be to see USB 2.0.