Intel Releases USB 3.0 Controller Interface Spec 374
hardsky submitted thrilling news about everyone's favorite interconnect cable by saying "USB 3.0 is set to deliver data-transfer speeds of up to 5Gb/s, initially over tweaked connectors and wiring and, later, over optical links."
Re:Sigh (Score:5, Informative)
Embossing (Score:5, Informative)
Re:Great! (Score:5, Informative)
simple answer: yes
Complicated answer:
Progress is inevitable and we definitely need that kind of speed. Its not only about hard drives but also about Audio visual components. Such as an USB HDTV Dongle which is a bit slow for USB 2.0. It is also one of the reasons why webcams currently max out at 2.0 megapixels. anything more than that the current USB 2.0 cannot handle. It is quite easy to eat through those 600MB/s, Just think of the USB 3.0 replacing 1000mbit ethernet.
Re:Where is FireWire going? (Score:3, Informative)
I believe that firewire is peer to peer, while USB is master/slave. In theory that means that you can connect any two firewire-capable devices and have them talk to each other, which is not possible with USB (you need a hub). I've never actually tried that though, and so cannot personally confirm it.
Plug rage (Score:2, Informative)
Don't laugh. I've seen power plugs glued to drives.
Re:Where is FireWire going? (Score:5, Informative)
Re:Where is the "standars" body (Score:5, Informative)
Re:Embossing (Score:3, Informative)
Seriously, how many connectors out there do you know of that let you plug it in any way you feel like?
Oh, I don't know... Ever used headphones? [wikipedia.org]
How about at least some power [wikipedia.org] connectors? [phidgets.com]
I can't even imagine it being easier to manufacture this little square thing than to manufacture something, you know, round like that.
Re:Embossing (Score:3, Informative)
For starters, my car keys.
It can be done, but it requires duplicating contacts in an axially-symmetric way.
I would have been happy with a trapezoidal or semicircular connector.
Re:USB? Bah. (Score:3, Informative)
It is not just the dependance on the processor that makes the "slower" FireWire 400 beat out USB 2.0 (the fast one... whatever they are calling that today). A rough outline:
1) FireWire allows devices to allocate a specific slice of time to their needs for a period of time. This slice of time can then be used exclusivly by the device to transmit that round of data. This keeps devices from interupting the flow durring those periods. USB has a part-way analog to this, but it is not nearly as efficent.
2) FireWire allows any device to talk to any other without requiring a CPU's intervention. So if you are transfering from on HD to another connected via FireWire the data never has to flow thorugh the CPU (unlike on USB).
3) FireWire has explicit support for DMA (direct memory access), so when transfering data to and from an internal HD the CPU only has to grant access to the bits on disk and the FireWire support chips can handle streaming the data from one storage device to the other (like #2, but lightly different).
4) Latency can be gaurenteeded through a mechanism in the time-slice arbitration system. So audio devices can have the guaranteed chanels. On USB it is a constant fight... that does not work for music devices if you start loading up the USB system. This works well with the DMA thing, so even if your CPU is busy at the moment it does not have to make the context switch before accepting the data.
Most of these differences are inherint in the basic design of the two protocols. And they cause the FireWire bridge chips to be significaly more expensive (still we are talking a mater of a dollar or two). I have not heard any good analasis of USB 3 yet (since the spec just came out), but I suspect that USB 3.0 will still be saddled with the legacy of USB 1.0 (which was designed with mice an keyboards in mind... everything else seems to have been showhorned in).
Re:Sigh (Score:3, Informative)
Re:Sigh (Score:3, Informative)
You forgot the step where you realized you stuck the USB connector into the ethernet slot. It fits, I kid you not.
Re:Embossing (Score:2, Informative)