By Jakub Han
ProGrade Digital is the first company to demonstrate the new CFexpress (CFx) 1.0 technology in 1TB capacity at NAB 2018. The new CFx Type B standard reaches Data Transfer speeds of 1,400MB/s in a same form factor as XQD cards. The company also introduced new high capacity CFast 2.0 and SDXC UHS-II cards.
New CFexpress Technology
CFexpress (CFx) is a new memory card standard promoted by the CompactFlash Association (CFA) as an evolution of the XQD standard. It is an outcome of the divided market of top-tier manufacturers, where some use the CFast standard, which is based on the older SATA (Serial Advanced Technology Attachment) interface and others (Sony and Nikon) use the XQD standard, based on a more advanced PCIe (Peripheral Component Interconnect Express) interface.
The initial CFx card form factor – known as Type B – is the first version of the new standard that will hit the market and conforms exactly to that of XQD. Over time, other form factors within the CFx specification will likely include a Type A card (single lane) similar to SD, a Type C card (four lane) similar to storage modules from Codex and possibly an even larger Type D (eight lane) for very high capacity and performance. Compared to the older XQD standard, the CFx Type B form factor adds the second PCIe lane and the logical device interface capability of NVMe (Non-Volatile Memory express), leveraging the performance capabilities.
There are several benefits to a CFx Type B card for use in digital imaging applications:
- Form Factor ideally suited for higher capacities needed in imaging applications – up-to 1TB with current NAND flash memory technology
- Physical size that is easy to handle – slightly larger than SD and slightly smaller than CFast or CompactFlash (29.6 x 38.5 x 3.8 mm)
- Performance capability capable of >1GB/sec → continue…
From:: Cinema 5d