Phison transfers 1 GB / s to SD memory cards

Controllerfabrikant Phiso has disclosed that it will start delivering SD-Express cards from next month. In its own words, it is the first manufacturer to market products according to the SD 7.0 standard.

The company presents memory cards in the MicroSD format with a capacity of 256 and 512 Gigabyte. SD Express is the same in format as UHS, but much faster than this older standard.


The Phison PS5017 controller is used in the cards. It offers PCIe 3.0×1 through the NVME protocol. In theory, this would allow 975 MByte / s. According to Phison, both cards offer a read speed of up to 870 MByte / s and a write speed of up to 500 MByte / s. The controller supports QLC and TLC flash.

Even newer is SD 8.0, which uses PCI-Express 4.0 x2, setting the bar on a theoretical throughput speed of 3940 MB / s. With this new standard, memory cards must be used that are equipped with not one, but two rows of pins.

We will probably not see these cards under the Phison brand name in our stores, but another manufacturer will put a sticker on them.

Sources: Golem, Phiso


Source: Hardware Info Compleet by nl.hardware.info.

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