SD
SD Cards To Support Up To 128TB And 985 MB/s With NVMe and PCIe Interfaces
Soon you will be able to purchase new SD cards with the SD Version 7.0 specification. The new specification supports up to 985MB/s of throughput, which comes courtesy of PCIe and NVMe interfaces, and up to 128TB of capacity. That's quite the jump over the current 2TB limit.985MB/s of throughput for a simple SD card may seem ludicrous, but higher-resolution video, VR, automotive use-cases, and IoT applications are steadily encroaching upon the performance limits of today's products.
OEMs are notoriously slow to adopt radically new designs, so the new SD Express specification is also backward compatible with the legacy UHS-I interface. Backward compatibility means we will see end devices come to market faster, whereas other faster interfaces have withered on the vine due to reworked interfaces that prevent broad uptake.
Paul Alcorn-TH
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