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A CompactFlash card is a removable flash-storage card built to the CompactFlash standard. The CompactFlash Association (CFA) identifies its interface as Parallel ATA (PATA) and classifies the specification as legacy. It is a specific format—not a generic name for camera memory cards.
What CompactFlash means
CompactFlash, often abbreviated CF, is a particular removable-media standard. A device must support CompactFlash to use a CompactFlash card; being a camera or having a memory-card slot does not establish compatibility.
The CFA lists CompactFlash among its removable-media standards and identifies PATA as its interface. Its designation of CompactFlash as a legacy specification describes the standard’s status in the CFA’s portfolio. It does not, by itself, establish whether cards are currently available or whether a specific camera supports them.
How CompactFlash differs from other card formats
CompactFlash, CFast, CFexpress, and XQD are separate standards, not interchangeable names for the same card. The CFA distinguishes their interfaces as follows:
#1 Best Overall
- Exceptional Shot to Shot Performance ; Read speeds of up to 120MB/s and write speeds of up to 85MB/s
- Professional Grade Video Capture ; VPG 20 ensures sustained data recording rate of 20MB/s for a smooth and unbroken video stream
- Durable Design ; Backed by rigorous stress, shock, and vibration testing and includes RTV silicone coating for protection against shock and vibration
- It operates in nearly any climate, with a functioning temperature range of -13 to 185 degrees Fahrenheit
| Format | Interface identified by the CFA |
|---|---|
| CompactFlash | Parallel ATA (PATA) |
| CFast | Serial ATA (SATA) |
| CFexpress | PCIe and NVMe |
| XQD | The cited CFA card-types page does not state an interface for XQD. |
Because these are distinct formats, a card that seems to serve the same purpose may still be physically or electronically incompatible with a CompactFlash slot. Do not assume a newer format will substitute for CompactFlash, or that a CompactFlash card will fit a different-format slot.
How to check whether a card will work
- Identify the exact format. Check the device label or manual for explicit support for CompactFlash. If a listing says only “CF,” confirm that it means CompactFlash rather than CFast or CFexpress.
- Check capacity and speed requirements. Use the device documentation and the card documentation to confirm supported capacity and any speed requirements. These limits vary by device and card; the format name alone does not establish them.
- Verify reader support for transfers. If you need to copy files to a computer, confirm that the card reader explicitly supports CompactFlash. A reader for another camera-card format may not work.
The CFA’s overview establishes the format distinctions, but compatibility is device-specific. The card-types page does not provide a list of compatible cameras, current inventory, or model-level capacity limits.
Rank #2
- Built-in industry-standard compatibility
- Flash memory card for digital devicesff
- High Performance Controller for demanding applications
- CF memory card 2GB
What to look for when buying a replacement
For a device that explicitly supports this format, look for a product described as a CompactFlash memory card. Confirm the exact format, supported capacity, and any other requirements in the host device’s manual before purchase. For file transfer, check that a reader specifies CompactFlash support. The CFA’s legacy designation is not a guarantee that a card or reader is available from any particular seller.
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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Source: CompactFlash Association, “Card Types”.
Quick Recap
Best Value
- Uninterrupted High-Speed Workflow for Professional Creators: Engineered for demanding workflows, this professional CF card delivers read speeds up to 160MB/s and complies with the VPG standard for consistent video performance. It maintains sustained write speeds without slowdown, making it perfectly suited for capturing rapid burst shots and recording high-bitrate 4K video smoothly on your digital camera. Important: Verify your device’s compatibility with 128GB CF cards before ordering.
- Massive Capacity, Uninterrupted Capture: With a generous 128GB of storage, a single CF card is all you need for a full day of high-resolution photos and 4K video recording. Ideal for weddings, travel, and extended events—shoot freely without the disruption of changing cards mid-session.
- Built for the Wild. Trusted in the Elements: The reliable companion for every expedition. Combining waterproof, shockproof, and extreme temperature resilience, this CF card is built to withstand drops, downpours, freezing cold, and scorching heat—so you can focus on the shot, no matter the conditions.
- Seamless Cross-Platform Compatibility: Easily adapts to both Canon and Nikon ecosystems, enabling seamless switching between different professional gear.
- Reliability: We start with premium materials to build inherent reliability into every CF card, ensuring not just lasting durability but also a solid foundation for fast and stable data transfer every time.
Rank #4
- Records and captures cinema quality 4K and Full HD video(1)
- Increase workflow efficiency with transfer speed of up to 160MB/s (1067X) read speeds. Based on internal testing; performance may vary. MB=1,000,000 bytes. X = 150KB/sec.
- Industry leading shot speed performance of up to 150MB/s (1000X) write speeds. Based on internal testing; performance may vary. MB=1,000,000 bytes. X = 150KB/sec.
Rank #3
- Exceptional Shot to Shot Performance - Read speeds of up to 120MB/s and write speeds of up to 85MB/s
- Professional-Grade Video Capture - VPG-20 ensures sustained data recording rate of 20MB/s for a smooth and unbroken video stream
- Durable Design - Backed by rigorous stress, shock, and vibration testing and includes RTV silicone coating for protection against shock and vibration
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
