microSD Express Doubles Speeds, New SD Express Speed Classes Introduced
SD Association (SDA) today announced the latest evolution of SD Express memory cards doubling microSD Express memory card speed up to 2 GB/s, plus four new SD Express Speed Classes 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 consumers identify the right card for their device while giving manufacturers new tools to assure minimum level of performance of SD Express memory cards and have means to guide consumers what type of cards will assure specific application operations.
The latest generation of microSD Express uses the PCIe interface delivering a 1,969 megabytes per second (MB/s), nearly 2 gigabytes per second (GB/s) speeds by using the PCIe Gen 4 x1 lane as defined in the latest update to the microSD Addendum version 8 specification. microSD Express was introduced with 985 MB/s speed maximum data transfer rate and the NVMe upper layer protocol in the SD 7.1 specification. The increase in speed gives product designers more storage options and SSD level performance for a variety of size constrained devices requiring easily repairable or upgradeable storage.
The latest generation of microSD Express uses the PCIe interface delivering a 1,969 megabytes per second (MB/s), nearly 2 gigabytes per second (GB/s) speeds by using the PCIe Gen 4 x1 lane as defined in the latest update to the microSD Addendum version 8 specification. microSD Express was introduced with 985 MB/s speed maximum data transfer rate and the NVMe upper layer protocol in the SD 7.1 specification. The increase in speed gives product designers more storage options and SSD level performance for a variety of size constrained devices requiring easily repairable or upgradeable storage.