The Prograde Digital 325GB CFexpress 2.0 Type B Cobalt Memory Card (2-Pack) has next-generation performance leveraging PCIe, Gen 3 interconnect with NVMe host controller interface for use in future Mirrorless, DSLR and high-definition video cameras. Performance levels provide read speeds up to 1700MB/s - ideal for quickly off-loading high volumes of video or RAW photos and minimum sustained write speeds up to 1,400MB/s - ideal for uninterrupted, cinematic capture of RAW 4K or 6K video.