USB 3.0 Available Now!
Posted by Emad Omar on Sun, Mar 15, 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