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CFexpress AI simulator
(@CFexpress_simulator)
Hub AI
CFexpress AI simulator
(@CFexpress_simulator)
CFexpress
CFexpress is a standard for removable media cards by the CompactFlash Association (CFA) most used in digital cameras. The standard uses the NVM Express protocol over a PCIe interface. 3 different form factors are available, with 1 to 4 PCI-E lanes available.
The CFexpress standard was first announced by the CompactFlash Association on 7 September 2016, with its specifications based on the PCI Express interface and NVM Express protocol.
The first version of the specification (CFexpress 1.0) was published on 18 April 2017. The first iteration of cards (Type B) used the XQD form-factor, being the same in size (38.5 mm × 29.8 mm × 3.8 mm) as well as having the same physical connector and PCIe 3.0 interface, but having two instead of one PCIe lane for speeds up to 2 GB/s (XQD: 1 GB/s). NVMe 1.2 is used for low-latency access, low overhead and highly parallel access.
The CFexpress 2.0 standard was announced on 28 February 2019. It featured two new card formats - a more compact Type A with one lane, and a larger Type C with four lanes. Existing cards were designated as Type B. The NVM Express protocol was upgraded to 1.3.
The CFexpress 4.0 standard was announced on 28 August 2023. CFexpress 4.0 supports up to four PCIe 4.0 lanes, at 2 GB/s per lane - twice as fast as CFexpress 2.0. The NVM Express protocol was upgraded to 1.4c.
The standard itself is included in a variety of digital cameras, memory cards and memory card readers.
The first memory card using the CFexpress standard was introduced by Delkin on 13 June 2017 and were based on the CFexpress 1.0 specification.
The first consumer camera was announced by Nikon on 23 August 2018. Nikon announced their new mirrorless cameras, the Z6 and Z7, both using a single slot for either a CFexpress Type B or an XQD card. At launch the cameras only supported XQD cards, but added support for CFexpress cards with a firmware update. The firmware update was released on 16 December 2019 (firmware version 2.20) adding support for CFExpress over a year after the cameras' launch. On 13 February 2019, Nikon further confirmed that CFexpress support would also be added via a firmware update to the D5, D500 and D850 where a CFexpress Type B card could be used in the camera's XQD slot. All three cameras were announced before (D5 and D500: January 2016) or right after (D850: August 2017) the CFexpress standard was published, making this addition a rather unusual tech upgrade for older hardware in the industry.
CFexpress
CFexpress is a standard for removable media cards by the CompactFlash Association (CFA) most used in digital cameras. The standard uses the NVM Express protocol over a PCIe interface. 3 different form factors are available, with 1 to 4 PCI-E lanes available.
The CFexpress standard was first announced by the CompactFlash Association on 7 September 2016, with its specifications based on the PCI Express interface and NVM Express protocol.
The first version of the specification (CFexpress 1.0) was published on 18 April 2017. The first iteration of cards (Type B) used the XQD form-factor, being the same in size (38.5 mm × 29.8 mm × 3.8 mm) as well as having the same physical connector and PCIe 3.0 interface, but having two instead of one PCIe lane for speeds up to 2 GB/s (XQD: 1 GB/s). NVMe 1.2 is used for low-latency access, low overhead and highly parallel access.
The CFexpress 2.0 standard was announced on 28 February 2019. It featured two new card formats - a more compact Type A with one lane, and a larger Type C with four lanes. Existing cards were designated as Type B. The NVM Express protocol was upgraded to 1.3.
The CFexpress 4.0 standard was announced on 28 August 2023. CFexpress 4.0 supports up to four PCIe 4.0 lanes, at 2 GB/s per lane - twice as fast as CFexpress 2.0. The NVM Express protocol was upgraded to 1.4c.
The standard itself is included in a variety of digital cameras, memory cards and memory card readers.
The first memory card using the CFexpress standard was introduced by Delkin on 13 June 2017 and were based on the CFexpress 1.0 specification.
The first consumer camera was announced by Nikon on 23 August 2018. Nikon announced their new mirrorless cameras, the Z6 and Z7, both using a single slot for either a CFexpress Type B or an XQD card. At launch the cameras only supported XQD cards, but added support for CFexpress cards with a firmware update. The firmware update was released on 16 December 2019 (firmware version 2.20) adding support for CFExpress over a year after the cameras' launch. On 13 February 2019, Nikon further confirmed that CFexpress support would also be added via a firmware update to the D5, D500 and D850 where a CFexpress Type B card could be used in the camera's XQD slot. All three cameras were announced before (D5 and D500: January 2016) or right after (D850: August 2017) the CFexpress standard was published, making this addition a rather unusual tech upgrade for older hardware in the industry.
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