The SD Association (SDA) announces the SD 8.0 specification-- leveraging the PCIe 4.0 specification to create faster SD Express memory cards, with data transfer rates reaching up to 4GB/s.
SD Express uses the PCIe 4.0 specification and the latest NVMe specification (up to 1.4). The SD 8.0 specification provides to transfer speed options for SD Express memory cards through support for either PCIe 3.0 x2 or PCIe 4.0 x1 with up to 2GB/s and with PCIe 4.0 x2 technology with up to 4GB/s. SD Express cards based on PCIe 4.0 x1 architecture use the same form factor as SD 7.0 cards, with a second row of pins, while cards supporting dual PCIe lanes (PCIe 3.0 x2 or PCIe 4.0 x2) have three rows of pins.
Continue reading...