On Wed, 8 Jan 2003, Jeremy Derr wrote: > On Wednesday, January 8, 2003, at 02:25 PM, Kevin Stevens wrote: > > Virtually all Digital Camcorders out right now are Firewire. I can't > name one that isn't, off the top of my head.
Agreed. > Virtually all Digital Still Cameras out right now are USB. Similarly, I > can't find any with USB 2. Maybe I'm not looking hard enough. I guess not. > Every USB 2 device I've seen yet is a hard drive that also has FireWire. Our experiences differ. I wouldn't be complaining if it weren't an issue for me. > > Put another way, the difference between USB 1 and USB 2 (11vs400Mb) is > > a > > enormous benefit to have. The improvement between Firewire and F2 > > (400 vs > > 800Mb) is much less so - you usually can't dump 50MB/sec to disk > > anyway, > > never mind 100MB/sec. > > aaaah, two flaws in your logic. you're assuming a single computer > connected to a single peripheral. you're also mixing Mb with MB. Bus I am assuming a single peripheral, true. I'm fully conscious of the distinction of megabits vs megabytes, and if you review my posting above you'll see that I have the correct rates as well as the correct abbreviations where each is used. > throughput is measured in Megabits per second (Mbps). Hard drive > transfer rates are measured in Megabytes (MB). (this doesn't really > affect the outcome of your statement -- a single device isn't usually > going to saturate a USB 1 bus, much less a USB 2 or FireWire bus; Almost any single hard drive, and definitely any solid state device, will saturate an 11Mb/1.5MB USB 1 connection. That's why USB 2 is of great significance compared to USB 1. > similarly, your 784kbps (or worse) Cable or DSL connection isn't going > to be saturated by a single computer, regardless of your browsing > habits). Not true. My DSL connection is capped at 1.2 Mb, and I am therefore limited to 150KB/sec downloads. My internal network and drive speed could handle a much (probably 100x depending on which computer it is) faster connection. In fact, I was downloading BMW films last night at my standard 150KB/sec, and copying them back out over the network to my file server at the same time. The DSL connection was the overwhelming bottleneck in the process. > The difference between 400Mbps and 800Mbps becomes a much bigger deal > (MUCH!) when you're talking about a set up like mine. I have 2 hard > drives, a CDRW drive, a scanner, and an iPod (intermittently > connected). I'm also about to add another FireWire drive or perhaps a > FireWire RAID array, doing away with my older, slower drives. I'm also > looking at a firewire based MIDI rig. > > Not one of these devices alone will benefit from being on a 400Mbps bus > (or higher), except maybe the RAID array (theoretically, at least). > Combined onto the bus together, I already run into a slow-down a couple > of times per day, particularly when I add syncing my iPod to my normal > workflow. I'm sure it'll happen more often soon. For my uses, it might > never happen @ 800Mbps... or very rarely, at least. Ok. As said before, our experiences differ. None of this speaks to my original point, which is that it's disappointing to not have USB 2 on a machine that prides itself on its interoperability. KeS -- G-Books is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Check our web site for refurbished PowerBooks | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> G-Books list info: <http://lowendmac.com/lists/g-books.html> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/g-books%40mail.maclaunch.com/> --------------------------------------------------------------- >The Think Different Store http://www.ThinkDifferentStore.com ---------------------------------------------------------------
