A friend recently had to change to a USB flash drive. She is now using the classic Kingston 8G (red one) a few years ago. Low does not work. It does not conform to identity. Later, Jingdong selected the election, no love for Kingston's products, memory is, solid-state hard drive is also, U disk can not accept, in short, think Kingston Low burst. Select these two
Samsung Bar, nominally read 130M/s, writes do not know. SanDisk CZ73, nominally read 150M/s, seems to be awesome. Later on the Internet search Bar compared with the CZ73, CZ73's 4K literacy is stronger than the Bar, I think my friend usually pass forms, pictures, documents and other small files more, so they helped into the CZ73.
When I bought it yesterday, it was still 49.9 yuan, and it rose to 55.9 yuan today. The price of Jingdong is really a mystery. And when it was bought last week, it was out of stock. Wait until the goods that were available on this Monday, and it was out of stock now. Is sales so good? (It seems that I earned it)
Today arrived, on the packaging map
Behind me I forgot to shoot. . . . .
Close up to two U disk
Roughly measured with a ruler, length 43mm, width 12mm, thickness 5mm. From the above, I think the comparison of the old U disk (a Kingston G4) is still relatively small. The metal is mixed with plastic. The metal part has a little metal wire drawing process. It looks good, but it is easy to stick fingerprints. . . . . . To know that my computer is a fingerprint collector. . . . . . Super tired sticky fingerprint feeling.
Next, simply measure the speed of this U disk
Test platform: Acer E5-572G (i5-4210M + GT840M, solid state hard drive is a flash-firm enhancement of U firmware mlc)
This is the test result of CrystalDiskMark. The continuous reading of 120M/s does not reach the official nominal speed. The write is only 26M/s, which is a little low.
This is the result of ATTO DiskBenchmark, when the outbreak read speed reached 129M/s, and it did not reach the official standard. . . But there is an explosive 100M/s, a bit scary
The results of the test software have certain limitations on daily use, so let's take a look at the files we pull.
The test file is a pure version image of win10, version 1511, 4.3GB in size.
Pulling the U disk from the SSD to test the writing speed takes a total of 3 minutes and 14 seconds.
It can be seen that the u disk still has a write speed of 80M/s at the beginning, but then it drops to the 20M/s position. It can be seen that this U disk has about 1Gb of slc cache to support the write speed. (My old Kingston also has a steady 30M/s write, which is lower than it is)
Pulling in the SSD from the USB disk tests the read speed, which takes 35 seconds. It can be seen that the reading is a stable speed of about 130 M/s, and there is no speed drop. But does it not achieve the official 150M/s speed, is this false propaganda? ? ?
Look at this U disk only 50 dollars, I will not pursue it.