This week, Adata showed off its first SD Express memory card. Dubbed the Premier Extreme SDXC SD 7.0 Express Card, Adata said the device will use PCIe Gen 3 x1 and hit read and write speeds of ...

if you want those super-fast 4GB/sec speeds then you're going to need a new SD card reader that has 2 x PCIe 4.0 lanes, because if you don't those glorious speeds will be halved, down to just ...

Over the PCIe bus, an SD Express card plugged into an SD Express host can reach up to 985 MB/sec, a 50% increase over the UHS-III bus in full-duplex mode. See SD card classes, SD card, PCI Express ...

The need for speed In order to achieve their impressive speeds, ADATA’s SD cards use the newly released SD7.0 specification, which includes the incorporation of both the PCIe and NVM3 interfaces.

Will Whang's RPI5-SDexpress-Hat is a small HAT+ for the Raspberry Pi 5, adding a microSD Express card slot for ultrafast ...

SD Association The new card specification is based on the UHS-II/III SD card design -- the one with the extra row of connectors. It's backwardly compatible with any reader that can take those cards.

SD Express is built around the PCIe 3.0 specification and NVMe v1.3 protocols defined by PCI-SIG and NVM Express. This is implemented into the second row of pins used by UHS-II cards today.