Upcoming SD Cards Will Have Up to 4GBps Transfer Speeds By Techtonic group The SD Association has announced the SD 8.0 specification for SD Express memory cards . The new specification hits almost 4 gigabytes per second (GB/s) data transfer rate (3938 megabytes per second) . The standard continues using the NVMe Express protocol but uses a dual-lane PCIe 4.0 interface . According to the association, the new specification will help move large files created during heavy workflows including but not limited to "data-intense wireless or wired communication, super-slow-motion video, RAW continuous burst mode, 8K video capture & playback, and 360-degree images or videos." The new SD 8.0 specification offers two transfer speed options - PCIe 3.0 x2 / PCIe 4.0 x1 and PCIe 4.0 x2. The former offers up to ~2GB/s while the latter touches the glorious 4GB/s mark. SD Association makes it clear that SD Express cards with PCIe 4.0 x2 architecture wi...