USB 3.0 specification finalised - bit-tech.net Forums

Bindibadgi · 18th Nov 2008, 09:46

http://www.bit-tech.net/news/2008/11...on-finalised/1

The USB Promoter Group has finalised the specification for USB 3.0 "SuperSpeed", and is due to announce official details at a conference on Monday.

ch424 · 18th Nov 2008, 10:06

Is it just the hardware that's faster, or has the protocol changed?

plagio · 18th Nov 2008, 10:24

How about the voltages USB 3.0 can give to devices ? Will it be 5v like USB2 ?
Just wondering whether external devices will still require a power supply.

Bindibadgi · 18th Nov 2008, 11:15

I've no idea about the voltages tbh - I thought it was an optical connection. I think it's probably still 5V if they do include a power line.

UrbanMarine · 18th Nov 2008, 12:39

The transfer rate for USB3 is sick. 25gb in 70s.

mclean007 · 18th Nov 2008, 12:44

Quote:

Originally Posted by Bindibadgi

I've no idea about the voltages tbh - I thought it was an optical connection. I think it's probably still 5V if they do include a power line.

Yeah, it will be. It's backwards compatible to USB2/1.1/1.0 so it has the same power pins. Whether external devices need additional power is really a question of their current requirements rather than voltage. For example, mice, keyboards, thumb drives, some 2.5" external HDDs, scanners, webcams, wireless adaptors etc. generally don't need external power supplies because they have low current requirements, whereas heavier duty things like printers, most 3.5" drives and so on do need external power supplies because they need more current than the (IIRC) 1.5 amps that a single USB connector provides.

mclean007 · 18th Nov 2008, 12:45

Quote:

Originally Posted by UrbanMarine

The transfer rate for USB3 is sick. 25gb in 70s.

Yeah, except find me a disk that can stream data at that speed! Always good to remove a bottleneck though.

Gareth Halfacree · 18th Nov 2008, 13:24

Quote:

Originally Posted by mclean007

[...] more current than the (IIRC) 1.5 amps that a single USB connector provides.

500mA in the current (excuse the pun) USB spec.

Fused · 18th Nov 2008, 15:54

I think take up maybe slow mainly because this time round a lot more people have a lot more usb devices. While I welcome the speed increase I don't have any real need to replace my usb2 external hard drives yet so I won't be buying into USB3 until I eventually get a new motherboard which comes with it as standard. Of course If I replace my motherboard in the time between now and its general release (to take advantage of Core I7 or whatnot) It could be even longer.

I suppose it will benefit some who regularly make large data transfers through USB or stream via USB but as a whole I don't think the extra speed is really needed just yet. My patience can last a little longer.

Its good progress though (encase you all think I'm being too negative)

zimbloggy · 18th Nov 2008, 16:57

You know you're a geek if you get excited about this... which I kind of am excited about this.

mclean007 · 18th Nov 2008, 17:05

Quote:

Originally Posted by Gareth Halfacree

Quote:

Originally Posted by mclean007

[...] more current than the (IIRC) 1.5 amps that a single USB connector provides.

500mA in the current (excuse the pun) USB spec.

Thanks. Trustedreviews says the available current is increased to 900 mA with USB 3, so maybe we will see fewer power cables with more devices able to lose their wall-wart power bricks (though these have thankfully been getting much smaller recently - the charger for my Nokia N95 8GB is smaller than a standard UK plug!). They also say USB 2.0 offers "approximately 100 mA" though, so don't know how much to believe their figures. 900 mA would be odd - why not 1,000?

Link - http://www.trustedreviews.com/periph...ly-Detailed/p1

Anakha · 18th Nov 2008, 22:25

Quote:

Originally Posted by mclean007

They also say USB 2.0 offers "approximately 100 mA" though, so don't know how much to believe their figures. 900 mA would be odd - why not 1,000?

As I understand it, USB offers up to 100mA for non-negotiated links (So, just plugging 2 wires into V+ and GND in a USB socket). For negotiated links (Where there is a device on the line), maximum draw is 250mA for passive ports (Unpowered hubs) and 500mA from active ports (Powered hubs/root hub).

My understanding may not be correct, however.

Darkefire · 18th Nov 2008, 23:15

So we have High Speed USB 2.0, and now Super Speed USB 3.0. Do they really need to bother with the "*** Speed" nicknames, the specification is to computer connections what Kleenex is to tissues. I eagerly await USB 8.0, "Ultra Mega Hyper Speed". Sounds like a bad Power Rangers attack.

Sparrowhawk · 19th Nov 2008, 01:14

Quote:

Originally Posted by zimbloggy

You know you're a geek if you get excited about this... which I kind of am excited about this.

I'm excited by this in the prospect of a bunch of cheap USB 3.0 thumbdrives instead of a traditional hard drive in something like a netbook.

metarinka · 19th Nov 2008, 03:28

as of now I don't thionk many users have a need for such throughput, but of course that's future proofing a bit because in 2014 when it's still around 250gb/s might seem a little limiting. In the sound production world USb 2.0 is sometimes known for having bad latency which was more important than transfer speed as that was rarely ever reached. I guess I could see implementation of things like usb 3.0 gigabit ethernet and other protocols that have the potential for high burst speeds.

[USRF]Obiwan · 19th Nov 2008, 10:12

So in the future I can stream/edit on the fly from the hdd camcorder?
Oh wait. I probably have to buy a new camcorder also.. damn..

18th Nov 2008, 09:46	#1
Bindibadgi Richard Swinburne bit-tech Staff Join Date: Mar 2001 Location: Omnipwntent Posts: 28,264	USB 3.0 specification finalised http://www.bit-tech.net/news/2008/11...on-finalised/1 The USB Promoter Group has finalised the specification for USB 3.0 "SuperSpeed", and is due to announce official details at a conference on Monday. __________________ Made you look, made you stare, made you clicked this in your underwear! Den of Geek!

18th Nov 2008, 11:15	#4
Bindibadgi Richard Swinburne bit-tech Staff Join Date: Mar 2001 Location: Omnipwntent Posts: 28,264	I've no idea about the voltages tbh - I thought it was an optical connection. I think it's probably still 5V if they do include a power line. __________________ Made you look, made you stare, made you clicked this in your underwear! Den of Geek!

18th Nov 2008, 12:39	#5
UrbanMarine Government Prostitute Join Date: Aug 2008 Location: United States Posts: 1,015	The transfer rate for USB3 is sick. 25gb in 70s. __________________ RIP: 3DRealms & Duke Nukem

18th Nov 2008, 15:54	#9
Fused Multimodder Join Date: Jun 2007 Location: West Sussex, UK Posts: 110	I think take up maybe slow mainly because this time round a lot more people have a lot more usb devices. While I welcome the speed increase I don't have any real need to replace my usb2 external hard drives yet so I won't be buying into USB3 until I eventually get a new motherboard which comes with it as standard. Of course If I replace my motherboard in the time between now and its general release (to take advantage of Core I7 or whatnot) It could be even longer. I suppose it will benefit some who regularly make large data transfers through USB or stream via USB but as a whole I don't think the extra speed is really needed just yet. My patience can last a little longer. Its good progress though (encase you all think I'm being too negative) __________________ Currently Working on: Server PC (based on Gliders Bit-tech guide) Next Project: Website

19th Nov 2008, 03:28	#15
metarinka I am a Dremel Join Date: Feb 2003 Location: Michigan Posts: 1,623	as of now I don't thionk many users have a need for such throughput, but of course that's future proofing a bit because in 2014 when it's still around 250gb/s might seem a little limiting. In the sound production world USb 2.0 is sometimes known for having bad latency which was more important than transfer speed as that was rarely ever reached. I guess I could see implementation of things like usb 3.0 gigabit ethernet and other protocols that have the potential for high burst speeds. __________________ project: Orbitoid project: Orbitoid discussion Project: Angry-9 the WWII radio

18th Nov 2008, 10:06	#2
ch424 Design Warrior Join Date: May 2004 Location: Oxford, UK Posts: 2,512	Is it just the hardware that's faster, or has the protocol changed?

18th Nov 2008, 10:24	#3
plagio Multimodder Join Date: May 2004 Location: Rome, Italy Posts: 141	How about the voltages USB 3.0 can give to devices ? Will it be 5v like USB2 ? Just wondering whether external devices will still require a power supply.

18th Nov 2008, 16:57	#10
zimbloggy Multimodder Join Date: Jul 2008 Posts: 75	You know you're a geek if you get excited about this... which I kind of am excited about this.

18th Nov 2008, 23:15	#13
Darkefire Minimodder Join Date: Sep 2008 Posts: 45	So we have High Speed USB 2.0, and now Super Speed USB 3.0. Do they really need to bother with the "*** Speed" nicknames, the specification is to computer connections what Kleenex is to tissues. I eagerly await USB 8.0, "Ultra Mega Hyper Speed". Sounds like a bad Power Rangers attack.

19th Nov 2008, 10:12	#16
[USRF]Obiwan Ultramodder Join Date: Apr 2003 Location: Netherlands Posts: 1,220	So in the future I can stream/edit on the fly from the hdd camcorder? Oh wait. I probably have to buy a new camcorder also.. damn.. __________________ Mascleta: "The most accurate simulation of thunder, humans can simulate..." The answer is 42, so... whats the question again? If you know what 'Peek' and 'Poke' represents, then you are probably as old as me.