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Intel, AMD and Nvidia have finally resolved the disputer regarding USB 3.0 and now all three are working together to launch it in 2009.

The dispute started after AMD and Nvidia threatened to release their own USB 3.0 standard when Intel refused to release its specification. Nvidia and AMD had claimed previously that Intel was not giving the specification to companies that compete with Intel in the processor and chipset business.

Intel has now released a draft specification revision 0.9 related to Extensible Host Controller Interface (xHCI). for next-generation USB 3.0 technology also known as SuperSpeed USB. It is a next-generation high-speed connection standard that will offer 10 times the speed of USB 2.0, roughly 5 gigabits per second.

The draft specification provides a standardized method for USB 3.0 hardware to communicate with USB 3.0-specific software. It is being made available under royalty free licensing terms to all USB 3.0 Promoter Group and contributor companies that sign an xHCI contributor agreement.

According to the statement released by Intel:

Interoperability among devices from multiple manufacturers is important for consumer adoption of SuperSpeed USB products.

AMD also released the following statement:

USB 3.0 is an answer to the future bandwidth need of the PC platform. AMD believes strongly in open industry standards, and therefore is supporting a common xHCI specification.

An AMD spokesman also said that its a shame that it took the reality of an alternative spec to make this come true. Intel should have opened it up without this. One has to question a monopolist leading a spec like this in the future.

Intel said it plans to make available a revised xHCI 0.95 specification in the fourth quarter. Current specification is 90 percent complete.