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.

usb-30a

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