SD cards prepare to double in speed with a jump to PCIe 4.0

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PC World

The SD Association is responsible for the further development of the SD memory card format. With a new SD Express standard, the transfer speeds for reading and writing to the small cards are to increase significantly. Specifically, SD Express version 9.1 stipulates that the memory cards must be connected via PCI Express 4.0 x1. That change will double the speed of SD cards, which saw their most recent shakeup when the microSD Express standard debuted in February 2019. Up to 2GB per second possibleThe change to PCI Express 4.0 x1 increases the speed to a maximum of 1,969 megabytes per second. T…

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