CFexpress

CFexpress memory is essentially the next revision of XQD, CFexpress Type B cards are physically the same size as XQD cards, this means that a camera designed for use with XQD cards would only need a minor firmware update to accommodate the CFexpress memory cards (please check compatibility). Cameras using XQD cards currently are from Nikon and Sony, two of the biggest major brands in the world of digital photography.

The PCIe 3.0 and NVMe 1.3 protocols used by CFexpress cards are comparable to those used in solid-state drives (SSDs), which are often substantially quicker than SD cards. CFexpress Types A, B, and C are the three different types. The three CFexpress card versions are physically different from one another in size. The CFexpress Type A is the smallest, with dimensions of 20mm by 28mm by 2.8mm (thickness, including label area). In contrast to Type B cards, which measure 38.5mm x 29.6mm x 3.8mm, Type C cards are the largest at 54mm x 74mm x 4.8mm. The fundamental reason for the varying sizes is that each of these memory card kinds has a different amount of PCIe data transmission lanes. This is because the CFexpress Type A card has just one lane, Type B has two, and Type C has four. The three different types of memory cards have different theoretical maximum transfer speeds: Type A cards have a theoretical maximum transfer speed of 1,000 MB/s, Type B, 2,000 MB/s, and Type C cards, 4,000 MB/s. You can utilize Type B with high-end cameras, which is the type that is most usually discovered to function with cameras.