When it comes to storage devices that are known for their small and portable size, most people think of products like flash drives. However, its speed, capacity and reliability are only at the temporary data exchange level, which is difficult to bear the heavy responsibility of data storage.
PSSD, the speed and volume advantages of mobile SSDs, are increasingly favored by consumers. The performance and reliability of competing SSDs, coupled with the size and power consumption of traditional mobile hard disks, make it a new choice for data storage of PCs, smart terminals and other devices. The Ming series PSSD is a product launched by Seagate for mainstream consumers, small and portable is the appearance, and the inherent performance is amazing.
And the common PSSD products directly use M.2 SSD modules as storage media different, Ming's compactness, especially "short" is based on the use of special specifications of the storage media, such as the 1.8-inch hard disk-sized cuboid shape of the year only 50mm×70mm×10mm, the weight is only 44g, much smaller than the common built-in 2.5-inch HDD mobile hard disk. Its front covered metal brushed panel, silver mesh design on both sides, more decorative role, black, white and blue and other three appearance colors to meet the user's individual needs. The main body of the disk is wrapped in plastic material, leaving only a USB-C 3.2 interface and a white LED indicator, and the overall design is very simple.
In addition to the shell and built-in heat sink, ming's actual storage function module weighs only 14g, and the volume is reduced to the size of chewing gum. At the same time, its price also has considerable advantages, the 500GB version is 699 yuan. It's just that these are floating clouds compared to speed.
It is not difficult to see from the device properties that ming compatibility can be better UASP mode, and the USB-C interface transmission speed is 10Gb/s. It comes with two USB cables, C2C at 10Gb/s speed and C2A at 5Gb/s speed, to meet the requirements of different interface compatibility.
In addition, in the device attributes, the interface standard of the built-in SSD is ATA-3, and its nominal maximum speed is 1030MB/s, a difference of 10 times between the two, which does not rule out the possibility that Seagate has improved its own products through relevant protocols. The actual performance of the product did not disappoint, even the smallest capacity of 500GB, still showed the performance of the USB-C interface to the limits.
The I/O performance of external storage products cannot be compared with the built-in SSD, and the read and write performance data of CrystalDiskMark is far from the nominal level in the context of 14kIOPS. This result is directly related to the application scenario of PSSD products, and more bluntly, the test software is not suitable for expressing the performance of mobile hard disk products, so the results can be referred to.
The situation is similar for the AS SSD Benchmark.
In the ATTO Disk Benchmark test, the performance of Ming is very close to the nominal value, and the read and write speed is simultaneously increased to 1000MB/s level. In addition to the efficiency problem of the software evaluating the interface speed, the 10Gb/s interface has been limited to the play of the Ming. In other words, the performance of more than 64KB of data blocks is comparable to the PSSD with built-in PCI-E 3.0 x4 NVMe SSD, and the price performance is very outstanding.
In addition, Windows 11 already has a built-in cache acceleration function that is compatible with Ming, so that it can better play its performance advantages. As an external storage product, Ming has a good role in the mainstream application range of QD2 and 4. Of course, in absolute terms, QD4 has broken through the 1000MB/s threshold, while QD2 remains at the 960MB/s level, which is the level of more ordinary user applications.
Finally, we will talk about the actual structure of the next ming: it uses Phison (group) PS2251-17, a USB 3.2 Gen 2x2 (20Gb/s) master, with 1 or 2 NAND chips, dual-channel mode, it can provide a maximum of 1300MB/s sequential transmission speed. As mentioned earlier, Seagate restricts this master to a higher speed interface mode, so the current performance is limited by the interface speed. In essence, PS2251-17 is a high-performance USB master, there is no need for secondary conversion from SATA or PCI-E, from this architecture, Ming is closer to high-performance flash disk than PSSD, so its cost can be lower than competitors.
In short, Ming has surprisingly high performance and high cost performance, and the small design is even more flattering. Entry-level products have such performance, it is inevitable that people are full of expectations and good feelings for high-end products.