Intel's announced USB 3.0 specification could push throughput beyond 4Gbps (300MBps) at the application level while introducing Quality of Service in support of HD video streams. Besides supplanting Firewire once and for all, a clear goal of the new "SuperSpeed USB" is to keep up with the transfer speeds of flash chips. "We don't want to be the bottleneck in the system," says Intel's Jeff Ravencraft who is overseeing the 3.0 initiative. Intel, HP, Microsoft, NEC, NXP, and TI will present the initial spec for a design review in November with first silicon to be stamped in "early 2009." While the new interconnect (pictured) will remain backward compatible with USB 2.0 and prior devices, new cables laced with an optical link and a max length of 2-meters will be required to take advantage of those high speeds according to a senior engineering manager with NEC. Meanwhile, a 1Gbps throughput is being targeted with Ravencraft's other baby: Wireless USB 1.1. Sounds great, but with existing 480Mbps Wireless USB silicon only achieving about 40Mbps in practice, Intel would be wise to focus on efficiency, not theory. Of course, it's all just a lot of smack-talk 'til they deliver, but with Apple running Intel inside now, Sony putting USB in their camcorders, and eSATA proliferating for external disks... well, Firewire's days sure seem numbered.

SAN FRANCISCO--Intel and others plan to release a new version of the ubiquitous Universal Serial Bus technology in the first half of 2008, a revamp the chipmaker said will make data transfer rates more than 10 times as fast by adding fiber-optic links alongside the traditional copper wires.

Intel is working fellow USB 3.0 Promoters Group members Microsoft, Hewlett-Packard, Texas Instruments, NEC and NXP Semiconductors to release the USB 3.0 specification in the first half of 2008, said Pat Gelsinger, general manager of Intel's Digital Enterprise Group, in a speech here at the Intel Developer Forum.

In an interview after the speech, Gelsinger said there's typically a one- to two-year lag between the release of the specification and the availability of the technology, so USB 3.0 products should likely arrive in 2009 or 2010. A prototype shown at the speech is working now, and USB 3.0 will have optical and copper connections "from day one," he added.

The current USB 2.0 version has a top data-transfer rate of 480 megabits per second, so a tenfold increase would be 4.8 gigabits per second. Many devices don't need that much capacity, but some can use more, including hard drives, flash card readers and optical drives such as DVD, Blu-ray and HD DVD. The fastest flash card readers today use IEEE 1394 "FireWire" connections that top out at 800 megabits per second.

In addition, USB 3.0 will offer greater energy efficiency, Gelsinger said. It will be backward compatible, so current USB 2.0 devices will be able to plug into USB 3.0 ports.

...a clear goal of the new "SuperSpeed USB" is to keep up with the transfer speeds of flash chips.