CFast and CFexpress are two types of high-speed memory cards that are commonly used in professional-grade cameras. Both cards offer significantly faster read and write speeds than traditional SD cards, making them ideal for capturing high-resolution images and recording 4K or 8K videos. However, there are some key differences between the two formats that you should be aware of before making a purchase.
CFast
CFast was introduced in 2010 as a successor to the CompactFlash (CF) card format. It uses the SATA (Serial ATA) interface, which offers read speeds of up to 600 MB/s and write speeds of up to 550 MB/s. CFast cards are also available in two different form factors: Type I and Type II. Type I cards are the same size as CF cards, while Type II cards are slightly larger.
CFexpress
CFexpress was introduced in 2017 as the successor to both CFast and XQD cards. It uses the PCIe (Peripheral Component Interconnect Express) interface, which offers read speeds of up to 4,000 MB/s and write speeds of up to 3,200 MB/s. CFexpress cards are also available in three different form factors: Type A, Type B, and Type C. Type A cards are the smallest of the three, while Type C cards are the largest.
Which card is right for you?
The best card for you will depend on your specific needs and budget. If you need a card that is fast and affordable, then CFast is a good option. However, if you need the absolute fastest speeds, then CFexpress is the better choice.
Here is a table that summarizes the key differences between CFast and CFexpress:
| Feature | CFast | CFexpress |
|---|---|---|
| Interface | SATA | PCIe |
| Read speed | Up to 600 MB/s | Up to 4,000 MB/s |
| Write speed | Up to 550 MB/s | Up to 3,200 MB/s |
| Form factors | Type I, Type II | Type A, Type B, Type C |
| Price | Less expensive | More expensive |
Additional factors to consider
In addition to the factors listed above, there are a few other things to consider when choosing between CFast and CFexpress:
- Camera compatibility: Not all cameras support both CFast and CFexpress cards. Make sure to check the compatibility list for your camera before making a purchase.
- Storage capacity: CFast and CFexpress cards are available in a variety of storage capacities. Choose a card that is large enough to store all of your photos and videos.
- Cost: CFexpress cards are more expensive than CFast cards. If you are on a budget, then CFast is a good option.
Conclusion
CFast and CFexpress are both excellent choices for professional photographers and videographers. CFast is a good option for those who need a fast and affordable card, while CFexpress is the better choice for those who need the absolute fastest speeds.
I hope this blog has helped you to understand the difference between CFast and CFexpress. If you have any questions, please feel free to leave a comment below.