back to article USB accelerates to 10 Gbps

Universal Serial Bus, the connectivity standard so ubiquitous the world has long stopped caring about the derivation of the USB acronym, has just been upgraded to 10 Gbps. The upgrade comes in the form of a .1 release, USB 3.1, that is backwards compatible with USB 3.0 and 2.0 kit. The new speed will only be achievable with …

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  1. Anonymous Coward
    Anonymous Coward

    SuperSpeed+, what is next, ultimate speed and then ultimax?

    There have been many technologies that have been better than USB. The next question, when will Intel support USB 3.1? With Intel having the biggest share of the processor market, they can dictate when it becomes mainstream. If they decide to wait a few chipset generations, then many computers will not have USB 3.1

    1. Abot13

      I agree that USB standards naming has been a mess for the longest time.

      But the adoption of this standard by Intel is not that important. its rather easy to change the chip that provides (extra) USB3 ports on a lot of motherboards for a 3.1 chip.

      maybe Intel is a contender for the firm that produces most processors, but intels share in the total processormarket is far from the biggest. if ARM adopts USB3.1 in their designs it will become mainstream rather fast.

      1. Anonymous Coward
        Anonymous Coward

        Which costs money that the manufacturer will need to recoup. Intel has USB 2.0 support in their latest chipsets. For a manufacturer to put USB 3.1 in, they will need to use a PCIe interface and install another chip. For many machines, they are made as cheap as possible and thus, they will wait for Intel to offer USB 3.1 support.

        1. B-D

          Cheap As Chips

          Absolutely, the fiasco surrounding the 1st gen Marvell SATA3 controllers that were tacked on to X58 family motherboards because Intel hadn't gotten SATA3 integrated in time proves that point.

          Sure, they had SATA3, but it performed only marginally better than the integrated Intel SATA2 it was meant to usurp.

          There is also the mobile computing market where less is more and separate controller chips are very much undesirable, for that market it is SoC or GTFO.

      2. Suricou Raven

        There's no reason for ARM to adopt even USB3 support. Their processors would struggle to keep up - they aren't made for speed. They are made to be compact, require minimal supporting components, and achieve a very impressive level of energy efficiency.

        1. David Hicks
          Stop

          Erm, some ARM procesors absolutely are made for speed. Quad core parts running at close to 2GHz are not exactly sluggish.

          1. Anonymous Coward
            Anonymous Coward

            Yes, but USB doesn't do DMA, it requires the CPU to help it along. That means battery life and responsiveness of the device suffers.

            1. Darryl

              Or borrow a page from the iPad and just drop the versions altogether.... 'The New USB'

            2. Anonymous Coward
              Anonymous Coward

              DMA

              Isn't the DMA aspect of Firewire a big security issue?

              1. P. Lee Silver badge

                Re: DMA

                >Isn't the DMA aspect of Firewire a big security issue?

                That depends if you trust what you are connecting to.IP/Firewire or IP/TB is a bad plan for general networking, but would be good for building a high-speed cluster interconnect for firewalls, load balancers etc.

                You just treat it as a PCIe extension. It would be quite nice to see a switch which emulates 10G ethernet cards, so TB (or better, Lightpeak) gives you your physical link to a virtual 10G ethernet interface which is in the switch. It would be interesting to see how that would stack up against "normal" 10G ethernet.

    2. pixl97
      Go

      >SuperSpeed+, what is next, ultimate speed and then ultimax?

      USB Plaid.

      1. Lon Bailey
        IT Angle

        Even faster?

        In Sweden, I saw a 3 telecom advert saying "Max Farts" (sic) - apparently farts in Swedish means something like speed... so maybe USB 3.x could be max farts USB....

    3. Montreal Sean

      USB Sonic?

      No screwdriver required.

      It's so fast it hums?

    4. CanadianMacFan

      Obvious marketing name

      Plaid speed

    5. Robert E A Harvey

      what is next

      USSB? then USSSB, U4SB...

      1. Should b Working

        Re: what is next

        Reboot - then it will be:

        USB ONE

    6. Kunari

      Ludicrous Speed of course.

      http://www.youtube.com/watch?v=ygE01sOhzz0

  2. Killraven

    Potential

    Pretty cool potential to replace CAT5-based networking, for those of us that still dabble with wiring.

    1. Lunatik

      Re: Potential

      Erm, maybe not. Can you say latency? Overhead?

      I'll stick with Ethernet and cat6, thanks.

      1. Killraven

        Re: Potential

        Admittedly those technical details are beyond my scope, that's why it's "potential". The bugs need to be figured out by somebody a bit more qualified. Theoretically a router/hub/switch should work all the same way, the only thing that's really changing is the type of wires and connectors involved, you just no longer need a dedicated network plug.

        1. Ken Hagan Gold badge

          Re: Potential

          It's harder than you think. USB is a master-slave protocol and if you want the slaves to be able to send traffic you need to either statically reserve bandwidth for them or poll them. It's not like firewire, which was a genuine bus (which is why Windows would happily offer network services over firewire, but not USB). I suppose it is just a simple matter of programming, and I suppose token ring networks demonstrate that you can achieve reasonable performance even if your protocol includes a "speaking stick", but I think it's quite a lot of programming.

          1. Scott Wheeler

            Re: Potential

            It turns out that running network protocols over USB is already used. Many 3G USB "modems" are actually routers, and also run a small web server on the device to control the router functionality. However I agree with the general point that replacing physical Ethernet cables with USB is not obviously a good idea.

            1. Brewster's Angle Grinder Silver badge

              Re: Potential

              And USB wireless adaptors were popular in the early days of wifi.

      2. Suricou Raven

        Re: Potential

        Even ethernet has too much latency for some applications. If you want low-latency, you use infiniband. Costs a fortune though. It's used for cluster interconnects, and I read that some high-speed trading operations are asking for infiniband connections now because 10gig ethernet just has too much latency for them.

        1. Steve Davies 3 Silver badge

          Re: Infiniband

          20Gig Infiniband PCI-E Controllers are around £30 on Ebay. Hardly expensive. 40G are a lot more expensive.

          Current state of the art is 56Gig. That is mega expensive but still less than 10G Ethernet.

    2. the spectacularly refined chap

      Re: Potential

      Pretty cool potential to replace CAT5-based networking, for those of us that still dabble with wiring.

      Hardly. USB3.0 is already limited in practice to around 3m cable length. Hardly practical for a LAN. Then you have the issue of the differing device types - i.e. host and peripheral - that a simple cable can't compensate for. That's without even considering the lack of true interrupts (no, high speed polling doesn't substitute), DMA, and all the other niceties that make a PCI/PCIe ethernet adapter work so well without the huge CPU hit USB implies.

  3. quartzie

    interference problems

    I'm left wondering if the new standard does away with USB 3.0's interference with 2.4 GHz and 5 GHz frequency bands.

    As it is, I can barely use my Wi-Fi and wireless mouse whenever I connect a Superspeed USB drive into one of the blue ports.

    1. Paul Crawford Silver badge
      Unhappy

      Re: interference problems

      I doubt it :(

      In a world where everything is build down to a price, and the likes of Ofcom don't care about end user or public good but only licensing fees, we should not expect any radio gear to work at all well.

  4. Anonymous Coward
    Anonymous Coward

    10 Gbps

    ... while in real world, when I'll plug a USB 3.1 stick into my laptop...

    buy hey, who says all planes must fly like a blackbird?

  5. LaSombra

    Ludicrous USB speeds

  6. druck Silver badge
    Happy

    Cables

    At least it wont cost £25 for a cable like Thunderbolt

    1. Steve Davies 3 Silver badge

      Re: Cables

      It will if you buy it in PC World/Currys.

  7. JeeBee

    Hopefully being a point release the work to support it in existing USB 3.0 designs is very little, and we will see USB 3.1 supported in a lot of next year's SoCs, APUs and chipsets.

  8. Miek
    Joke

    10Gbps, wow that's fast. But, how fast is it in classified documents per second?

    1. Paul Crawford Silver badge
      Boffin

      Tsk, you should know El Reg's official measure of speed is the kilowrist of pr0n movies (at least, until UK censorship is implemented):

      http://www.theregister.co.uk/2008/11/12/arizona_boffins_grasp_fat_pipes/

  9. EdFX

    Aaah

    .... My wireless mouse stops working when plugging in usb3, assumed was driver issue between usb3 and windows 8

    All new kit and i7, couldn't find much on it... Thanks for info!

  10. EdFX
    Holmes

    Aaah

    .... My wireless mouse stops working when plugging in usb3, assumed was driver issue between usb3 and windows 8

    All new kit and i7, couldn't find much on it... Thanks for info!

    1. Anonymous Coward
      Anonymous Coward

      Re: Aaah

      http://social.technet.microsoft.com/Forums/windows/en-US/e43de6f5-4ad5-4f09-8021-92aefb00480d/windows-8-usb-30-problems

  11. Kay Burley ate my hamster

    Too soon

    10Gbps isn't enough of a leap.

  12. D@v3

    excessive

    It might be just me, but off the top of my head, I can't think of anything that would actually be able to use that sort of throughput. Surely it's just moving the data bottleneck to somewhere else.

    Can any disks write that fast? Even if they can, if you have an external disk, the connection to the host PC might be USB, but the actual connection to the disk is still likely to be SATA, which is slower, right?

    I might be missing something really obvious, but other than external disks (and networking, bust as mentioned above networking over usb has it's own issues), I cant really see the need for that sort of throughput on an external bus.

    Printing? Mouse? Keyboard? Web cam?

    Just because everyone loves a car analogy. To me, it seems like having a car that can go 500mph. Great, you have the fastest car in the world, but there is nowhere you can drive it at that speed.

    1. Boothy

      Re: excessive

      SATA 600 is the current de facto standard for SSDs, but there are faster interfaces around, such as PCIe.

      For comparison:

      USB 3.0 = 5 Gbps = 640 MBps

      USB 3.1 = 10 Gbps = 1250 MBps

      A current individual SATA SSD is limited to 600MBps due to the SATA 600 interface. So yes doesn't really need USB 3.1.

      But an PCIe SSD is a lot faster, as an example, the OCZ RevoDrive 3, hits 1,000MB/s read, and 925MB/s write. So that type of speed fits nicely within USB 3.1.

      So we just need someone to make a USB 3.1 to PCIe caddy :-)

    2. S4qFBxkFFg

      Re: excessive

      Graphics maybe - is there any reason monitors couldn't be made to connect to USB ports?

      1. KjetilS

        Re: excessive

        Those already exist

  13. Anonymous Coward
    Anonymous Coward

    Super speed and super

    Wow! USB's almost caught up with much longer haul fully peered Ethernet! What an achievement!

  14. Anonymous Coward
    Anonymous Coward

    Does it have DMA or will it be a CPU hog?

  15. This post has been deleted by its author

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