We use cookies to make your experience better. Read more
15 Mar, 2009
Why Is USB 3.0 Needed?
The short Answer is Speed & Power, let me explain.
USB is 10 times faster than USB 2.0 & 100 time faster than USB 1.1 & While using less power; which for portable devices like an Ipod power is more important than speed.
For Small Files less than 1Gb, USB 2.0 is fine, although as I get older I realize more and more time is the 1 commodity I am always short on.
USB 3.0 SPEED
USB potential Communications Speeds
· USB 1.1 Communication Speed 4.8Mbs
· USB 2.0 Communication Speed 480Mbps
· USB 3.0 Communication Speed 4.8Gbps
Here is a real world example of download times from the official USB organization www.usb.org
256 Flash | USB Flash | Sd-Movie | USB Flash | Blu-Ray Movie | |
256Mb | 1 GB | 6 GB | 16 GB | 25 GB | |
USB 1.0 | 5.7 Minutes | 22 Minutes | 2.2 Hours | 5.9 Hours | 9.3 Hour |
USB 2.0 | 8.5 Seconds | 33 Seconds | 3.3 Minutes | 8.9 Minutes | 13.9 Minutes |
USB 3.0 | 0.8 Seconds | 3.3 Seconds | 20 Seconds | 53.3 Seconds | 70 Seconds |
USB 3.0 Saves Power
Not a big deal for Desktop devices plugged into 120Volts but huge for portable devices.
While USB 2.0 Polls individual devices asking if they have anything to transfer USB 3.0 Devices & Hosts only transmit only when they have Data to Transfer. So if you have an Ipod, a Zune or some other portable USB Device they aren’t always using power telling the USB Bus that I have nothing to talk about, now if we can only implement this technology on telemarketers. J
0 Comment(s)