![]() ![]() It needs to wait for the device to complete its task before more data can be transmitted. The standard BOT (Bulk-Only Transfer) architecture used from USB 1.1 through to USB 3.0 is shown below:ĭon’t worry if you haven’t done a degree in Electrical Engineering, the above illustration basically shows that the traditional BOT protocol can only handle one request at a time. Since then, these issues have created a bottleneck for modern user modes, especially with USB 3.0, when the bandwidth is the same as its internal rival: SATA technology. ![]() At this time the throughput was low, multitasking was limited and no multiple access to the same device was even considered. The current USB 3.0 Protocol was established in 1998, since the launch of USB 1.1. The software has a USB 3.0 Boost tab which shows which of the two modes are currently enabled for each USB 3.0 port.īackground knowledge of the existing USB 3.0 Protocol What mode is currently in use can be seen via AI Suite II. If UASP is present, then it will use it, otherwise the software will enable traditional BOT instead. Whether you are using a UASP enabled device or standard BOT one, the ASUS software automatically checks to see what protocol it should use. The other advantage of having the ASUS Turbo Mode is the fact that it supports all USB devices understanding the SCSI command, rather than restricting the support to UASP enabled devices only, making it more accessible for most users.Īutomatic Switching & Monitoring via AI Suite II This is thanks to its improvements in data streaming, where much of the round trip time between command phases is reduced. This means it may not help to further improve the transfer performance when multiple files were transferred at the same time, however, it still delivers a noticeable performance gain in USB 3.0 data reads with the ASUS Turbo Mode. Optimized BOT, as you can guess from the name, does not have the luxury of UASP advances and relies on the standard BOT protocol currently used by all USB 3.0 devices. Turbo Mode (Optimized Bulk-Only Transfer) Support However since UASP is an industry standard, the device support for ASUS UASP implementation is not restricted to a particular controller manufacturer or device type, so the overall number of peripherals available should undoubtedly grow. This requires checking your peripherals before purchase. The downside of UASP is that the receiving device (Flash drive/external hard drive etc) must also be UASP enabled for the protocol to work. Moreover, thanks to the multi-tasking aware architecture, the performance is further enhanced when multiple transfers occur. The adoption of the SCSI Protocol in USB 3.0 provides its users with the advantage of having better data throughput than traditional BOT (Bulk-Only Transfer) protocol, all thanks to its streaming architecture as well as the improved queuing (NCQ support) and task management, which eliminated much of the round trip time between USB commands, so more commands can be sent simultaneously. Native Support of UASP (USB Attached SCSI Protocol) UASP Mode – A new industry standard of USB 3.0. Turbo Mode – ‘Optimized’ BOT mode developed by ASUS, which improves the performance of standard USB 3.0 hardware USB 3.0 Boost – ASUS’ overall technology used to describe the incorporation of UASP and Turbo Mode drivers and AI Suite II software. USB 3.0 Boost is a unique feature specially offered by ASUS allowing users to unleash the real performance of their USB 3.0 by offering two new features: an new industry standard called UASP and also an ASUS-developed method of overclocking the USB 3.0 bus called Turbo Mode, which boosts performance even when UASP-enabled devices are not available.
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