SD cards are about to get insanely fast May 19, 2020 https://betanews.com/2020/05/19/sd-card-express-fast/ SD Association: SD Association Delivers Gigabyte Speed Leap with New SD Express 8.0 Press Release: SD Express Delivers New Gigabyte Speeds For SD Memory Cards - Cards reach maximum 4GB/sec transfer rate with PCIe® 4.0 architecture (English) (PDF);: https://www.sdcard.org/press/whatsnew/SDExpressDeliversNewGigabtyeSpeedsForSDMemoryCards.pdf