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What is a CFexpress Card?
CFexpress, CompactFlash ,CFast and XQD memory cards are conducted by CFA (CompactFlash Association) .
CFexpress cards are based on . There are 2 releases of the CFexpress specification:
Key Features
Type A
Type B
Type C
Form Factor
20.0 x 28 x 2.8mm
29.6 x 38.5 x 3.8mm
54.40 x 74.10 x 6.0mm
Interface
PCIe Gen.3 x 1
PCIe Gen.3 x 2
PCIe Gen.3 x 4
Protocol
NVMe 1.3
NVMe 1.3
NVMe 1.3
Theoretical Performance
8Gbps (1GB/s)
16Gbps (2GB/s)
32Gbps (4GB/s)
Format Release Date
Feb.28 2019 (Ver.2.0)
Apr. 2017 (Ver.1.0)
Feb. 28, 2019 (Ver.2.0)
Feb., 2019 (Ver.2.0)
CFexpress 1.0 cards are limited to the Type B product size and utilize NVMe™ 1.2 stack. Compliant CFexpress 1.0 cards will use this logo
CFexpress 2.0 cards are differentiated by form factor and performance capability improves with each form factor size in conjunction with the number of PCIe® lanes.
Only CFexpress 2.0 cards may offer CFA-tested video performance guarantee (VPG)
CFexpress Type A cards support speeds up to 1000MB/s. Compliant CFexpress Type A cards will use this logo.
CFexpress Type B cards support speeds up to 2000MB/s. Compliant CFexpress Type B cards will use this logo
CFexpress Type C cards support speeds up to 4000MB/s. Compliant CFexpress Type C cards will use this logo
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