USB is a general-purpose serial connection standard in computers and the thing that “copies” data back and forth is called USB flash because it uses flash memory (a type of memory IC that supports hot plugging and unplugging). quick installation). Anyway, it’s not very important because when you go to a store and ask to buy a USB, no one will give you a document and contract to buy a standard USB. Instead, you will receive a small, powerful device. arbitrary shape and data can be copied.
Currently on the market, there is only USB 3.0, advertised as having read and write speeds of up to 5Gbps = 640MB/s, much better than USB 2.0 which is only 0.468Gbps = 60MB/s but that is the maximum speed of the USB standard, definitely not the maximum speed of the flash storage device you are holding in your hand because the world’s fastest USB flash drive only has a speed of about 575MB/s and its price is also about $40 for 128GB. There’s a high chance you won’t spend that much and just want to spend a few dozen dollars for a USB. The problem is that there are usually no reviews about the read and write speed of such USB drives. You just have to blindly choose a USB model and if you’re lucky it will have a decent read and write speed, about 10 MB/S.
Or not!
There is another way to know the speed of the USB you intend to buy, which is to use benchmark sites. The way to do it is very simple, you just need to search Google for the name of the USB + capacity and add the word benchmark.
Click and scroll down to the read and write speed section, I see the average read speed is 66.3 MB/s, and the average write speed is 32 MB/s, 6 times faster than the “standard” speed of cheap USBs 5MB/s. Copying a Japanese movie takes more than 3 minutes, with a price of $10, I found it very reasonable and satisfactory so I chose to buy this USB.
The column next to it is the random read and write speed. The USB will write at this speed when you copy a lot of small files, such as word and Excel files. For my needs, I only copy 1-2 files to take to a photoshop, so this parameter is not very important.
Above is how to choose a USB with fast read and write speed that suits your needs. This method has the disadvantage that with USBs that have never been benchmarked, it is impossible to know how fast or slow it is so you can buy it. You can become the first and contribute to this data bank so that future people can use it can choose more easily.