|ASUS P9X79 WS LGA2011 Workstation Motherboard|
|Reviews - Featured Reviews: Motherboards|
|Written by David Ramsey|
|Tuesday, 17 January 2012|
Page 14 of 17
USB 3.0 Boost
USB 3.0 Boost is a proprietary ASUS feature that's available on most of their X79 Express motherboards. It's their implementation of USB Attached SCSI Protocol (UASP), and ASUS has an informative web page on exactly how it works here. While the traditional USB Mass Storage protocol, also known as BOT for "Bulk Only Transfer", is limited to one command at a time, UASP can handle multiple commands simultaneously, and does not have to wait for the results of one command to be returned before issuing another command.
You can turn this feature on and off in ASUS' AI Suite program:
Selecting the Normal or Turbo button will determine whether USB 3.0 Boost is used. However, there's little reason to turn it off, since it will never harm performance and the protocol even auto-negotiates which UASP commands are supported when you connect a USB device.
To see what difference this makes, I connected a Patriot Pyro SE SATA 6G SSD via a USB 3.0 dock, and ran the AIDA64 disk read benchmark test in both modes.
The upper set of results is with USB 3.0 Boost disabled, while the lower set it with it enabled. While the performance of this SSD connected via USB 3.0 is far below its performance when connected to a SATA 6G port, performance still increased by over 20% with USB 3.0 Boost enabled. In fact, the read performance of a USB 2.0 thumb drive was increased by almost 10%, illustrating the advantages of this feature even for non-USB 3.0 devices.