Samsung showed a powerful external mobile hard drive T1 at CES2015 at the beginning of the year. This is a small mobile SSD with a maximum capacity of 1TB. Although it is small, its performance is very strong. It is officially promoted that its continuous reading and writing speed has reached 450MB/s under the USB 3.0 interface. Today we will see if this product really has such strong strength.
After Samsung used 3D V-NAND technology on flash memory, the storage density of flash memory has been greatly improved. When we tested Samsung's 850 series, we found that the PCB inside it was actually very small, especially the 850EVO, which only uses two flash memory to form a 250GB specification. If we do not follow the size of the 2.5-inch hard disk, Samsung can completely make the size of the shell smaller. This external Samsung portable SSD T1 is very small, only 71*53.2*9.2mm, which is about the size of three USB flash drives side by side.
The packaging of Samsung T1 mobile SSD is quite good. The accessories are just a manual and a USB 3.0 cable
T1 has a round appearance design, lightweight and extremely portable. It is not as big as a bank card, and can be easily put into the pocket
0Samsung T1 and 2.5-inch SSD are much smaller than normal USB drives, and it is about twice as big as an ordinary USB drive. The USB 3.0 interface of the hard drive supports UASP mode. This is the secret that it can achieve such high speeds as a mobile hard drive
0The model we have on hand is 1TB, and there are two USBs provided by 500GB and 250GB. The 3.0 data cable is relatively short, of course, this is also for portability.
. At present, we have not found a way to disassemble the shell of this mobile SSD without any damage, so we will not disassemble it here. According to Samsung, this T1 uses V-NAND flash memory, which is used by Samsung 850 Pro and 850 EVO. According to the previous official decryption, the second-generation 3D V-NAND adopts a TLC design. In terms of capacity, the T1 is more like 850 EVO. In addition, it supports TurboWrite technology, so the T1 should use full-capacity TLC flash memory like 850 EVO, rather than letting the TLC simulate it as MLC to work.
Performance Test
Test uses the Asus Z97-Deluxe motherboard, Xeon E3-1230 v3 processor, the USB interface used is PCH native USB 3.0, and the system is Windows 8.1 native to support the UASP protocol. The test results of
ASSSD are that the continuous reading and writing speeds are 432/404 MB/s respectively. As a mobile hard drive, the performance is very good. Compared with the SSD-level USB drive we tested before, it is much faster, and the reading speed is close to the limit of the USB 3.0 interface. In addition, its random performance is also quite good. You can compare it with the 850 EVO we tested.
random read and write IOPS performance is quite good in mobile hard disk. The test results of
CDM. Samsung T1 mobile SSD performance is quite strong
. If you test it on Windows 7 that does not support the UASP protocol, it will be like this. The continuous read and write has dropped to only about 300 MB/s, and the NCQ is gone, and the performance of 4K QD32 has dropped significantly.
This is a file copy test performed with FastCopy. The left one is read from T1, the right one is write, the system disk is Toshiba Q Pro 256GB, copy a 12.3GB game folder, with many small files in it, and there are 105,087 files in total, with an average reading speed of 50.44MB/s and a write speed of 42.34MB/s.
If it is a single large file, the transmission speed will be faster. Copying a 4.7GB movie file, the reading speed reaches 430MB/s and the writing speed reaches 394MB/s. It only took 12 seconds to finish the movie.
Finally, we used HDTune to do a full disk write test. We can see that the write speed was about 400MB/s at the beginning. After the write volume exceeded 150GB, the write speed began to decrease, which will probably stabilize at about 280MB/s. This is obviously the cache acceleration mode similar to the 850 EVO. However, since the write speed of the USB interface is about 20% slower than the SATA port, the cache consumption speed is also slower, and there is a certain time to release the cache. Therefore, the acceleration time of TurboWrite is longer. It takes 150GB to write continuously to slow down. There is basically no need to worry about it slowing down when using it.
summary
Samsung portable mobile SSD T1 is a large-capacity, high-performance and extremely portable mobile hard disk. Its small size makes it as easy to carry as a USB flash drive. This product has a minimum capacity of 250GB and a maximum capacity of 1TB. The huge capacity can allow users to store a lot of data. The SSD-level performance can greatly save you the time you copy data. It is an extremely excellent mobile storage product.
may be confused that it uses TLC flash memory. In fact, since the second generation of 3D V-NAND uses 40nm process, the life span is guaranteed. In addition, since it is an external storage device, the number of reads and writes is actually much lower than that of the built-in hard disk. In fact, many USB disks and TF cards are made of TLC flash memory, which is very common on external storage devices.
Of course, if you want to talk about the disadvantage of this product, it is expensive. The Samsung T1 250GB, 500GB and 1TB are sold on JD.com at 1599, 2999 and 5499 yuan respectively. This price is enough to discourage many people.
