Saturday June 30, 2018

SD Cards Add PCIe and NVMe, Hit 985 MB/Sec and 128TB

The SD Association has announced new specifications for SD cards that supposedly put them in line with SSDs. "SD Ultra Capacity" has upped the maximum capacity of cards from 2TB to 128TB, while "SD Express" adds PCIe and NVMe interfaces for 985 MB/sec data transfer speeds.

The new standards both retain the existing SD Card form factor, so will work in anything that can already read one of the cards. Not all devices will get the new speed, because adding NVMe and PCIe (versions 1.3 and 3.0 respectively) uses the second set of pins already present on ultra-high speed SD cards and not everything is built to hit those pins.