What's the difference between USB3.1 and USB3.0?

USB3.1 is the latest USB specification, which is sponsored by large companies such as Intel. The speed of data transfer can be increased to 10Gbps. Compared with USB 3.0 technology, the new USB technology uses a more efficient data coding system, and provides more than one efficient data throughput rate. It is completely backward compatible with existing USB connectors and cables. , and the related USB3.1 products have come into view, especially in the traditional host-side devices to provide expansion interface of the motherboard is most active. Although Intel does not provide native USB3.1 support to the next generation of 100-series chipsets, it is the same as the previous USB3.0, which provides a new interface with a Third-party-integrated master chip before it has a native solution.

　　What improvements are USB3.1 compared to USB3.0

The USB3.1 standard was released in July 2013 and the maximum theoretical bandwidth doubled when compared to USB3.0, reaching 10gb/s (Super speed+). USB3.1 encoding from the previous USB3.0 8b/10b replaced 128b/132b, bandwidth loss rate from 20% down to about 3%, after conversion bandwidth is also more than 1.2gb/s, which means that in real use USB3.1 the ultimate transmission rate is expected to close to 1gb/s.

how much faster can USB3.1 be than USB3.0?

Although USB3.1 has also brought higher transmission rates and fixed various aspects of previous problems, as it has in the past, people are talking more about the new type-c interfaces introduced with USB3.1. Similar to Apple's lightning interface, the TYPE-C interface eliminates the ever-anti-stay protection design, so it can be plugged in and out without any trouble identifying the insertion direction.

Another big selling point for USB3.1 Type-c is the increased ability to charge mobile devices. The maximum allowable standard for power supply under the USB 3.1 interface is significantly increased to 20v/5a (type-a/b only), which provides up to 100W of power supply output capability. and Type-c's highest standard for 12v/3a,36w's charging capacity has been enough to use a thin notebook, this is the new MacBook dares to give up the MagSafe and the use of type-c as a charging interface is an important reason.

The functional USB 3.1 Type-c also introduces a new alternate mode (alternate), which means that type-c interfaces and data lines can transmit non-USB data signals. Alt mode is already able to support the DisplayPort 1.3 and MHL 3.2 specifications, while Usb-if is also seeking support for other functional standards, and other interfaces, such as Ethernet, can also be type-c supported, in addition to the video interface.

　　Comparison of transmission speed between USB3.1 and USB3.0

USB 3.1 Speed doubling

At present, although there is no native USB3.1 support, but compared to the original USB3.0, the Third-party USB3.1 solution the highest access speed can be higher than the original USB 3.0 to 60%, the overall performance does not disappoint us.

　　How fast is USB3.1?

USB3.1 Type-c interface will play a very important role in mobile devices, from the current point of view, the type-c of USB3.1 is most likely to become the future connectivity standards, providing data transmission, peripheral connectivity, display output, such as integrated connectivity scheme.

It is reported that the EU 2017 will force all mobile devices to unify the USB3.1 interface. USB3.1 In addition to the computer field, mobile phones, tablets will be in full swing next year, and the technology is also supported by Intel, Google, Microsoft and Apple. USB. 1 and Type-c interface is a big trend after all, motherboard manufacturers from now on the layout of USB 3.1, is expected to drive through the host side of the product to bring other USB 3.1 external devices into the market, to promote the popularity of USB 3.1 is of considerable significance.