USB 3.0 Is Ten Times Faster; Get It In 2010
thefickler writes "Seagate and Symwave are jointly demonstrating the first consumer applications of USB 3.0 at CES, showing a Seagate FreeAgent drive running through a Symwave USB 3.0-compatible storage controller device. According to Symwave, this will result in 'speeds previously unattainable with legacy USB technology.' Which means, if you understand PR-write, it will be much faster."
Which means, if you understand PR-write, it will be much faster.
What does it mean if you don't know PR-write?
Given that USB is PIO and not DMA, the faster the bus runs the more processor intervention is needed. Given how cheap and fast our processors are, that's not a huge deal, but it's not like a DMA based transfer just got faster, it means that the processor is going to be more busy too.
PR-write or not, it will be a PITA just like USB2.0 until it's built in and common.
Sheldon
And how much cpu power is needed at that speed? firewire 1600 and 3200 seems better same cables and ports as firewire 800 unlike usb 3.0 that needs new cables and ports for usb 3.0 speed.
With many chipsets/motherboards already supporting SATA and the drives being widespread as well, many of US could enjoy much (about 6x ?) better than USB 2 port speeds for external drives by simply having the external ("e" in eSATA) connectors available.
USB 3.0 is known as "ludicrous speed".
Most of the replies so far show a glaring lack of knowledge of what USB3 really is. Honestly, it only bears a passing resemblance to its predecessors, and is a closer relative to PCIe. If you want more technical information, Denali has a good whitepaper (registration required):
http://www.denali.com/en/events/usb3_whitepaper/?EB20090105
...does it have any greater power capacity?
Yo dawg, I heard you like the Ackermann function, so OH GOD OH GOD OH GOD
According to Symwave, this will result in 'speeds previously unattainable with legacy USB technology.'
New technology will be faster than old technology? Impossible!
... The Ultimate speed is 88 mph.
Once a device hits that the Flux Capacitor kicks in and it goes back in time.
There is probably a huge prehistoric dump of USB sticks from the future somewhere in California.
Mit der Dummheit kämpfen Götter selbst vergebens
I didn't know computers could have sexual preferences. So THAT'S why I only seem to get lesbian porn popups...
+1 IDisagreeSoHeMustBeATrollOrAnAstroturferOrAShill
True, and as an extreme gamer, I need the extra bandwidth for my 37 megapixel sensor blue-laser mouse. Red lasers just never felt accurate.
You understand that PIO/DMA transfer modes only meaningful for Parallel ATA devices?
That's the meaning in traditional sense. But you can also use this distinction in a wider sense:
How much of an advantage this is, depends on how complex the initial parameter setup is, how much of the work is done by hardware vs. CPU, transfer speed, how large transferred blocks are, how often transfer occur, etc. etc. Besides overall speed, a big advantage is that the CPU can do other things (like decode a video stream, respond to keyboard / mouse input) while a tranfer continues in the background. This allows a system to feel much more responsive.
You state that USB controllers use DMA, parents says not. I don't know which is true. Perhaps there is DMA support for USB controllers, but the packets are small enough and flowing at a high enough rate that it feels like the CPU is doing all the work?
With USB2, copying from one flash drive to another takes my CPU utilization to 100%.
Please upgrade from Pentium era processor.
Ayup
Now we need to find a way to loop the video feed so we can get the people off of the usb bus.
Gee, don't say that to the aviation industry - they've standardized on Firewire because it saves weight in cabling.
The F-22 Raptor, the A380 Airbus, etc use firewire and gigabit ethernet to save weight. With over 300 miles of wiring an each A380, cutting the weight even in half makes a big difference with an A380.
http://74.125.77.132/search?q=cache:L96bOxSv3V8J:www.critical-embedded-systems.com/meecc/2005/presentations/Keller.pdf+army+tank+firewire+combat+electronics&hl=en&ct=clnk&cd=6&gl=ca&client=firefox-a " JSF Avionics snapshot
Distributed avionics: display- management computers, integrated core processing, and flight subsystems
IEEE 1394 FireWire network links core processor and display processors
Fibre Channel links core processor modules and sensor subsystems "
The military will be saying "You can have my Firewire when you pry it from my cold, dead hands." They have the bigger guns, so I think they'll win any argument.
Kevin Smith on Prince
A more interesting bit from TFA:
Good call, I hope to finally ditch those dozens of different chargers in a couple of years.
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There has to be at LEAST 76 virgins on slashdot.
This space available.
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But just because the military uses it doesn't mean anyone else will. Computers may well get rid of it before long (Apple certainly seems to be doing that). I mean the military also likes Ada, but you don't see it being used to develop desktop apps often (or at all really).
By "dead" I don't think the grandparent means "Gone form the world," they just mean "Has no future in desktop PCs."
When I was young and innocent, I wanted a wife like Marie Curie.
The longer I live, the more I am convinced that most woman demonstrate an almost allergy to technical reasons for things being other than they think they should.
By the way, there was once, about six or seven years ago, an opportunity for the industry to do away with the wires almost entirely for most consumer grade devices.
You probably wouldn't have wanted to use Freescale's UWB for mounting the drive containing your /usr and /home, but it would have been fast enough for watching video in real-time, for moving files between your camera and your laptop, all of that. And it would have been about as secure as wire, as well.
intel and their group have done their best at erasing the history from wikipedia, so, no, you'll never read most of the lurid details.
Computer memory is just fancy paper, CPUs just fancy pens with fancy erasers; the 'net is just a fancy backyard fence.