The new cards are much faster compared to the current standard. They can reach read speeds up to 530 MB / s – five times faster than microSDs with UHS-1 rating.
The write speed is also effective, reaching 170 MB / s; almost twice the capacity of the most powerful cards in the market – the SanDisk Extreme Pro, for example, can reach 100 MB / s.
Another advantage is the amount of input and output operations per second (IOPS): UFS reaches 40,000 IOPS in random read, while a microSD reaches approximately 1,800 IOPS. To achieve this performance, the UFS cards support reading and simultaneous recording through dedicated channels and allows command queuing.
Although it has a very similar format with microSD cards, the connectors are totally different and, at least for now, no device is compatible with the new. Samsung, however, has used UFS cards and internal memory in some of its devices, like the Galaxy S6 and S6 Edge .
Samsung does not disclose when it will start selling the UFS cards, or how much they will cost – let alone when we will have compatible devices.