"Turn" actual combat USB Interface Phone charger look 3.0/2.0 who faster

Original URL: http://mb.it168.com/a2012/0816/1385/000001385641_all.shtml

"IT168 Application" now, more and more computers are already popular USB 3.0 interface, the new laptop, the newly installed desktop, you can find this is not the same as the past 2.0 times the blue USB interface. So, the same is to charge the phone, USB 3.0 and the traditional USB 2.0 compared to the different motherboard chipset, desktop and laptop USB, motherboard I/O panel and motherboard expansion USB interface, these USB3.0 and 2.0 interface at the charging speed of the difference? This is the question we are going to discuss in this article.

▲ Practical USB Interface Phone charger look 3.0/2.0 who faster

▲usb2.0 and USB3.0

Now that you're charging your phone with a USB interface, let's look at the different places that USB3.0 and USB2.0 have. First USB3.0 from the original 4-pin plug changed to 9-pin, and secondly in the transmission speed is also faster than the previous USB2.0 nearly 10 times times. With the continuous upgrading of the motherboard chipset, the native USB3.0 has become the main interface of the motherboard and notebook, and the accompanying computer peripherals have also adopted a new USB3.0 interface.

▲ USB Interface on the desktop board

▲ USB interface of notebook computer

In addition to the use of USB interface to transfer data, many friends in daily life, but also often use the USB interface for external devices, such as mobile phones and many other devices. However, when using the USB interface to charge, always hear some questions, that is, the legend of "USB3.0 to charge faster than USB2.0" This makes small series very curious. So today's small series will lead you to do an interesting experiment, to see if it is USB2.0 interface charging fast or brand-new USB3.0 charging fast, in addition, the small part is also for different motherboard chipset and between desktop and laptop, motherboard i/ o panel and motherboard expansion USB interface of the charging situation of the comparison test, the test begins immediately, please wait and see.

USB3.0 and 2.0 structure comparison

Before testing, let's start by looking at the difference between USB2.0 and USB3.0, and see USB3.0 for the 2.0 where there are upgrades. First, the USB interface is initially understood by some supposedly data. USB2.0 using a 4-pin interface, the internal results and USB3.0 there is a great difference, the specific details please see:

▲USB2.0 structure diagram

▲USB3.0 structure diagram

Look at the structure of the above people on the usual we use the USB2.0 and USB3.0 whether there is a certain understanding. In addition to structural changes in many areas there are also new reforms.

USB Interface Parameter Comparison

interface	bandwidth (Mbit/s)	speed (MB/s)	wiring Maximum length (m)	output current and voltage
usb3.0	5000mbit/ s	625mb/s	5	5v/900ma
usb2.0	480mbit/s	60mb/s	5	5v/500ma
usb1.0	12mbit/s	1.5mb/s	5	5v/500ma

Look at the above data, you can more intuitively compare the differences between different versions of USB. In addition to the large changes in the organization, the most important thing is the difference in output current. A larger current at the same voltage will shorten the charging time of the charging device, which means that it can be fully charged faster. In the actual application in addition to charging fast, there is an application here to say a few more words, after listening to people will feel more intuitive.

▲ Dual USB Connector cable

is when you're using a removable hard drive, Before using the USB2.0 interface, the mobile hard disk box will generally use a dual USB connector, or even external power supply, using two USB interface or add external power to connect the mobile hard disk, this proves that the USB2.0 output current is small, can not meet the normal operation of the mobile hard disk power needs, and in the use of USB3.0 This does not happen, and only a single connector is needed to fully satisfy its use. Say so much, everyone may wait, the following small series began to USB2.0 and 3.0 who charge faster to do a real test.

Introduction to charging hardware environment

Before the test, the small series first introduced as the test of the hardware environment, and as a charging device used by the mobile phone, the reason for the use of mobile phones to test, the main reason is because we in peacetime life charge the most frequent even the mobile phone. In this test, we used two chipset-based desktop board U and laptop USB2.0 and 3.0 interface respectively for charging test. Using the final test results to see the final interface is the fastest, and the laptop and the desktop 3.0 charging whether there is a difference.

▲ 14R Notebook for Dell New Spirit

Charging test Notebook platform basic configuration
Operating system	Windows 7 64-bit
Processor	Intel Core i5 3210M
Motherboard chipset	Intel HM77
Memory	DDR3 6GB
Hard disk	HDD 500GB

▲USB Charging Test Platform

Charging test Desktop Platform basic configuration
Operating system	Windows 7 64-bit
Processor	Intel Core 3770K
Motherboard chipset	Intel b75/z77 (Asus P8b75-v, Ying Tai tz77xe4)
Memory	DDR3 4GB
Hard disk	SSD 120GB

To ensure the accuracy of the test results, only the operating system and the corresponding hardware drivers are installed on the laptop and desktop test platform. The test timings are timed using the standard time of the National Service Center.

▲ Lenovo K800 Smart phone

▲ Lenovo K800 Smartphone battery capacity 1900 mah

The test used by the phone is Lenovo's K800 model, the battery capacity is 1900 MA. The test is carried out in the event that the phone is completely free of power and shuts down automatically. The test time was 120 minutes (two hours), using the USB3.0 and 2.0 interfaces of different desktop boards with two chipsets, and the USB3.0 and 2.0 interfaces of the laptops, and compared them. Let's go over the charging test for this time.

Desktop and laptop USB charging test One

First we used the first desktop Board's USB3.0 and 2.0来 for the charging test (the motherboard is the Intel B75 chipset), and because of the different brands of mobile phone charging circuit design, so the data obtained in the charging is different. Let's take care of the iphone, it is very unique in the design of charging, when the phone is charged to 90%, the phone will automatically reduce the charging current, so the results of the test is not very accurate. So today we use the Lenovo K800 mobile phone, in the charging test is also not in accordance with the full to test, in the desktop and notebook test platform, the author has used, from the power of 1% to start charging the way, to two hours, according to the final charging results to compare the way.

▲ using the Intel B75 Chipset Desktop Board USB2.0 charging start time

▲ using the Intel B75 Chipset Desktop Board USB2.0 charging end time

Above is the author uses the Intel B75 Chipset Desktop Board's USB2.0 interface to charge the phone, charging time is two hours, the charge is about 40%. Next I use the Intel B75 Chipset Desktop Board USB3.0 to charge, the time is also two hours, see the final results USB3.0 and 2.0 is not a significant difference in charging.

▲ using the Intel B75 Chipset Desktop Board USB3.0 charging start time

▲ using the Intel B75 Chipset Desktop Board USB3.0 charging end time

▲ Battery charge compared to two hours after charging the phone with the Intel B75 Chipset Desktop Board USB3.0 and 2.0 respectively

▲ using the Intel B75 Chipset Desktop Board USB3.0 with 2.0 charge histogram comparison chart

Above is the result of charging using the USB interface of the Intel B75 chipset motherboard, we can clearly see that in the same time, the use of USB3.0 is actually higher than the use of USB2.0 charge, according to the histogram display, the same time the gap between the two is close to 50%. The following small series on the use of another motherboard for the USB3.0 and 2.0 interface for the charging test, the selected motherboard is the Intel Z77 chipset, to see if the results are the same as the Intel B75 chipset results.

Desktop and laptop USB charging test Two

After looking at the charging results of the Intel B75 chipset Board, the next small series uses the Intel Z77 chipset's motherboard for the same test to see if the motherboard on the different chipset will be charging with the USB interface.

▲ using the Intel Z77 Chipset Desktop Board USB2.0 charging start time

▲ using the Intel Z77 Chipset Desktop Board USB2.0 charging end time

▲ using the Intel Z77 Chipset Desktop Board USB3.0 charging start time

▲ using the Intel Z77 Chipset Desktop Board USB3.0 charging end time

▲ Battery charge compared to two hours after charging the phone with the Intel Z77 Chipset Desktop Board USB3.0 and 2.0 respectively

▲ using the Intel Z77 Chipset Desktop Board usb2.0/3.0 charging comparison bar chart

Looking at the USB interface charging comparison between different desktop chipsets, you can clearly see that the test progress to now, the USB interface between different chipset charging difference is not very large, the different two motherboard chipset through the charging test results are basically the same.

You may be asked, small series using the normal motherboard I/O Panel USB interface, there is no consideration to the motherboard expansion of the USB3.0 interface and i/ o Panel on the USB3.0 in charge is not the same, in order to meet the curiosity of everyone, small series also use the motherboard expansion of the USB3.0 interface for a charge test.

▲ Motherboard Expansion USB3.0 interface

▲ charging using the motherboard USB3.0 expansion interface

▲ charging using the motherboard USB3.0 expansion interface

▲ Motherboard Expansion USB3.0 interface charging comparison bar chart

Up to the above charging comparison, I believe we are already very clear. In the same hardware environment, the same charge time length, the use of USB3.0 and USB2.0 on the same phone to charge, it is obvious to see USB3.0 charging effect is better than USB2.0. The test results are also nearly close, using the USB interface on the motherboard I/O panel to charge the phone with the motherboard's extended USB interface. But the test is not complete, we can not conclude, and then we are to use the notebook computer USB3.0 and 2.0 interface to carry out the charging test, to see what will be the results?

Desktop and laptop USB charging test Three and summary

After reading the desktop different motherboard chipset USB3.0 and 2.0 and the motherboard I/O Panel USB interface with the motherboard expansion USB interface charging test, we will then proceed to the notebook USB3.0 and 2.0 interface charging test. Now that the popularity of laptops is very high, whether you spend time at Starbucks or lunch at KFC, you can see friends using notebooks everywhere. So it is very convenient and practical to charge the mobile phone with the USB interface of the notebook. Today, the small part of the match, for everyone to test, see the Notebook USB3.0 and 2.0 interface when charging for the phone, will not be with the use of desktop USB interface charging is different. The model and the basic configuration of the notebook used in this test are described earlier, and we will compare it with the test in a more intuitive way.

▲ Use the USB3.0 of the notebook computer to start charging

▲ USB3.0 charging using a notebook computer

See above is the use of laptop computer USB3.0 interface to charge the phone, from the figure, after two hours of charge, the amount of electricity reached is about the same as the desktop, the basic is about 60%. Let's take a look at the laptop's USB2.0 interface to recharge and see if there's a gap between them.

▲ Use the USB2.0 of the notebook computer to start charging

▲ charging end of USB2.0 using notebook computer

▲ Charging comparison using USB interface of notebook computer

▲ Laptop USB Interface Charging Comparison bar chart

▲ different chipset boards and laptop USB interface charging comparison histogram

See believe that you have found the answer, and we used the desktop USB interface to test the results are basically the same, in the same time (two hours), the same is the shutdown charge, the notebook computer USB3.0 and USB2.0 interface charging test results and desktop charging is the same.

　　Editor's summary: according to the above test results, the same time (two hours) using the USB interface to charge the phone, USB 2.0 charge to 40%, 3.0 charge to 60% then the USB 2.0 full theoretical time of 300 minutes USB 3.0 theory is 200 minutes. In summary, the charging speed, should be 3:2 fast 50%. At the same time in the test of small and medium-sized also for the beginning of the article mentioned, different motherboard chipset and desktop and notebook, motherboard I/O panel and motherboard expansion USB interface between the charging results are compared, the conclusion is that the same USB3.0, because the current output is the same, the difference is not small.

"Turn" actual combat USB Interface Phone charger look 3.0/2.0 who faster