CFexpress
| Storage medium CFexpress
|
|
 Delkin 64 GB CFexpress memory card |
|
| General | |
|---|---|
| Type | Semiconductor memory |
| capacity | up to 128 PiB |
| lifespan | Unlimited reading |
| size | Type A: 28.0mm × 20.0mm × 2.8mm Type B: 38.5mm × 29.8mm × 3.8mm Type C: 74.0mm × 54.0mm × 4.8 mm |
| Reading speed |
Type A: 1000MB / s Type B: 2000 MB / s Type C: 4000 MB / s |
| Writing speed |
Type A: 1000MB / s Type B: 2000 MB / s Type C: 4000 MB / s |
| use | Professional digital cameras and camcorders |
| origin | |
| Launch | 2017 |
| predecessor | CompactFlash |
CFexpress is a memory card standard that is used, among other things, for digital photography and communicates via a PCI Express interface. It can be seen as a merger of CFast and XQD and uses the same interface as XQD.
The standard was announced in September 2016 and published in April 2017. It initially provided for a PCIe 3.0 interface (up to 2 lanes) and NVMe 1.2 and was later expanded to 4 lanes.
The first CFexpress memory cards were available in mid-2018, with capacities up to 256 GB. 1TB cards were introduced in January 2019. Nikon and other manufacturers announced that their devices - u. U. after a firmware upgrade - to be able to use CFexpress as an alternative to XQD. In January 2020 Canon presented the EOS-1D X Mark III , which only has two CFexpress slots, but cannot use XQD cards.
On February 28, 2019, CFA presented version 2.0 of the standard. It contains two new card formats called "Type A" (1 lane, particularly compact) and "Type C" (4 lanes, larger and thicker and with transfer rates of up to 4 GB / s); the existing cards are now called "Type B".
Web links
Individual evidence
- ↑ CFA 5.1 Press Release .
- ↑ CFexpress 1.0 Press Release .
- ↑ Canon Germany: Specifications & Key Features - EOS-1D X Mark III. Accessed February 1, 2020 (German).
- ↑ CFA Announces CFexpress® 2.0 Specification .