Flash CZ880 solid state flash disk evaluation.

s computer memory insufficient? Ordinary hard disk reading and writing speed slow? Cloud backup file download time?


With the rapid development of science and technology era, we have enjoyed the brand-new experience of 4K picture quality, Dolby sound effect, high-definition games and so on. At the same time, we have put forward higher requirements for data storage capacity. Compared with the standard Qing Dynasty, 4K or super-clear era, the size of one-step movies is G or 10G, ordinary storage tools are difficult to achieve fast reading and writing, often let us waste a good time in a long wait. At the same time, the built-in hard disk of PC computer can not meet the needs of portable. if you want to recover deleted files from flash drive free, you can use some data recovery software.


It is in this rapidly growing demand for storage that all kinds of mobile hard disks emerge as the times require, and are deeply loved and sought after by data enthusiasts. Their appearance has balanced the balance between storage and mobile better. They not only have a lightweight and compact body, but also have a large amount of storage space to meet the different storage needs of individuals or enterprises. The progress in the speed of reading and writing has also greatly improved the use experience of different users.


Today, I would like to comment on a practical and affordable "performance king" - Flash CZ880 Supreme Super Speed USB 3.1 solid-state flash disk.

Speaking of Flandi, many people are no strangers. SanDisk is a brand of Western Data and the world's largest supplier of flash data storage cards. Since its inception, it has been exploring the possibilities of storage. Its products have been applied to innovative data centers, embedded in a variety of revolutionary smartphones, tablets and laptops, and are deeply trusted by consumers. Moreover, as a vertically integrated storage company, from R&D to implementation to delivery of innovative and high-quality solutions, its efficiency is astonishing. As a professional company in the industry, its product update iteration also touches many people's hearts. This time, CZ880 Supreme Speed USB 3.1 solid-state flash disk can not be exceptional.


The CZ880 is a retractable interface with push-pull switch in the middle, which can be pushed out at a push. The pop-up feel is very smooth. The push-pull switch is made of plastic material, and its total weight is correspondingly less.


The shell of U disk is made of aluminium, which maintains the characteristics of lightness. The advantage of using metal material is that the heat dissipation effect is better when working, which is conducive to stable work and improve transmission efficiency.


The prominent length after integration is about 7CM. As a U disk with similar performance and SSD, this length is acceptable. The overall color of the shell is classic black. From the point of view of specific use, it looks very textural. Simple and smooth lines all reveal the simple fashion style. And for the friends who often take it out, there is no need to worry about dirty, price drop, wear and tear.


 As a flash disk, compared with solid-state hard disk, its portability can not be ignored. This flash disk is made of aluminium material and simple design. It weighs only 9 grams and is 71mm*21mm*11mm in size. It can be said to be a "fairy". Stationery boxes, wallets, shirt pockets and so on can be easily packed without taking up space and labor.


In addition, it has a key hole at the bottom, which can be hung on the key and carried with it. For office workers who often need to use the U disk, it can also be hung on the work card. They can take it anytime, anywhere, and they need not worry about losing the small size.

After describing the features of the appearance, let's talk about the hard core of this U-disk. First of all, I have to mention the USB 3.1 offered by the official website of this U-disk. So what's the difference between USB 2.0 and USB 3.0 that we know well before?


USB 3.1 (Gen 1)


From the official specification table, we can see that the USB 3.1 supported by CZ880 is actually USB 3.1 (Gen 1). So what exactly does USB 3.1 (Gen 1) mean? Is there Gen 2? Here we need to make a simple popular science.


First, let's talk about the naming rules of USB-IF. So far, the USB standard has changed four versions: 1.0, 1.1, 2.0 and 3.0, which seems very simple and rough. But USB-IF is not satisfied with this simplicity, so there are a number of complex high-end naming methods: Low Speed, Full Speed, Hi-Speed, SuperSpeed and so on. As you struggle to distinguish the names of different versions, USB-IF intelligently changed the color of USB 3.0 interface to blue, so you can finally clearly distinguish the difference between 3.0 and other versions. The combination of USB 3.0 interface and USB disk can effectively improve the transmission speed, which is the basic common sense and routine operation of the daily users of USB disk.


After the release of USB 3.1, when people take it for granted that it is a new generation standard, USB-IF quietly divides USB 3.1 into two different specifications: USB 3.1 (Gen 1) and USB 3.1 (Gen 2).


What's the difference between the two?


Simply put, USB 3.1 (Gen 1) is actually the previous USB 3.0 (5Gbit/s), while USB 3.1 (Gen 2) (10Gbit/s) is the real new standard. The corresponding English names of the two are SuperSpeed USB and SuperSpeed USB 10Gbps. Although Flash Di regards USB 3.1 as one of its main selling points, CZ880 is still essentially a USB 3.0 flash disk. As a conscience seller, Flash Di has clearly marked USB 3.1 (Gen 1) in product packaging and official website, which is a typical representative of childhood without deception. Although Flandi is so honest, the actual reading and writing speed of CZ880 is still so fast that I am surprised that the difference between Gen 1 and Gen 2 can be ignored subjectively in the face of such excellent reading and writing speed. Of course, USB 3.1 downwards compatible with USB 3.0 and USB 2.0, which I believe you all know.


Read and write speed


I mentioned the real USB 3.1 and fake USB 3.1, but if you simply think that CZ880 is just fooling you on renaming without any performance improvement, you're wrong. After all, what determines the performance of a U disk is not its interface standard, but the real speed of reading and writing.


The nominal speed of the CZ880 is 420MB/s and 380MB/s. To achieve this level of performance, it must also be the credit of SSD master control. Usually the bridging scheme of SATA SSD master + SATA to USB is the choice of this type of performance U disk. CZ880 here is the upgraded version of CZ80 master control, which realizes SSD level reading and writing ability on U disk with ASMedia ASM1153E bridge chip. According to the official data, it takes about 25 seconds to transfer 1000 photos and 15 seconds to transmit a 4K video. Of course, we don't know the exact size of these photos and videos.


Therefore, through the actual test, we can see the actual reading and writing ability of this U-disk. The test is divided into two kinds: system speed measurement and reading and writing speed measurement. The computer tested in this test is the alien of the i7 processor Windows 10 system. The actual velocity measured by Disk Speed Test is used. There is a slight gap with the official, but it is still more powerful.


Next, in order to consider the actual reading speed of the flash U disk, I still use the same alien computer to test its reading and writing speed. The selected file is 9.35GB video file. The test results show that the average writing speed is 224M/s and the reading speed is 369M/s. Generally speaking, the writing time is 41 seconds and the reading time is about 29 seconds. The speed is still very fast.