SD Association (https://www.sdcard.org/) (SDA) today announced the latest evolution of SD Express memory cards doubling microSD Express memory card speed up to 2GB/s, plus four new SD Express Speed Classes (https://www.sdcard.org/developers/sd-standard-overview/speed-class/) to ensure guaranteed minimum sequential performance levels in the new SD 9.1 specification including support of Multi-stream access and related Power and Thermal Management assuring the guaranteed performance. SD 9.1 helps c...