6 Best CompactFlash Card | Skip the Bottleneck in Burst

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You get nearly the same speed as the Pro card for a lot less money, making this the smart pick for enthusiasts who want performance without overspending.

Dropping from the Pro’s 150 MB/s write speed to 60 MB/s does not sting as much as you would think. For Full HD video recording and bursts of RAW files on cameras like the Canon 5D Mark III, the VPG-20 rating (20 MB/s guaranteed minimum) is enough to prevent dropped frames. Owners mention it can shoot 20+ RAW 22.3 megapixel images in burst mode without hesitation.

The transfer speed of 120 MB/s read means dumping files to a computer is still quick. It is sealed with RTV silicone for protection against shock and vibration, so the card can handle being stuffed in a bag or dropped on a trail. At 64GB, you get the same capacity as the Pro card for noticeably less money.

The trade-off: you cannot shoot 4K video or long high-speed bursts as aggressively as you could with the Pro. One reviewer using a Nikon D800 reports it delivers “fast performance” with no file loss across two events, but the 60 MB/s write speed (the rate it saves images to the card) means your camera’s buffer fills up sooner than the Pro’s 150 MB/s during a heavy sequence. For portrait, landscape, and general event work, this card handles the job well and leaves more money in your pocket.

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One card for a full day of shooting — no swaps, no worries.

With 128GB of storage, this card holds 128GB compared to the SanDisk Extreme Pro’s 64GB, meaning you can cover an entire wedding or week-long trip without swapping cards. It delivers read speeds up to 160MB/s and complies with the VPG standard for consistent video performance, so high-bitrate 4K recording stays smooth. Customers note “more than acceptable read and write speeds” and no issues with the card.

It is also built tough: waterproof, shockproof, and resistant to extreme temperatures, which matters if you shoot in rain, dust, or freezing conditions. The card works in both Canon and Nikon ecosystems, giving you flexibility if you switch between bodies.

The main consideration is hardware compatibility. The manufacturer explicitly says to “verify your device’s compatibility with 128GB CF cards before ordering.” Some older DSLRs (particularly pre-2010 models) cannot handle capacities above 32GB or 64GB, so check your camera’s manual first. Also, the exact sustained write speed is not published in the data, so the burst performance is less predictable than the SanDisk or Lexar cards.

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A speed demon for older Nikon and Canon bodies that can still chew through a burst.

The Lexar 1066x leverages UDMA 7 to push read speeds up to 160MB/s and is rated VPG-65, meaning it guarantees at least 65 MB/s sustained writes. One review compared it against a 400x card in a Canon 5D Mark II and found it achieved burst depth of 34 frames vs 27 at ISO 100 and cleared the buffer faster. For action shooters using legacy cameras, that buffer speed is the difference between getting the shot and watching the camera lock up.

At 1.2 ounces, it weighs three times as much as the 0.4-ounce Transcend card, but that difference is negligible inside a camera bag. It comes with downloadable Image Rescue software (a tool to recover lost photos) and a limited lifetime warranty, giving you extra confidence.

The hard cap is the capacity: 16GB is small for modern standards. It holds roughly 1,000 NEF RAW images on a Nikon D2X, which is fine for a focused shoot, but a wedding or event photographer will need multiple cards. At 61.95, it is also priced per-gigabyte at a premium compared to the SanDisk Extreme Pro 64GB.

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Two cards for the price of one good one — a capacity bargain with a speed warning.

At the same price as a single Lexar 1066x 16GB, the Cloudisk pack gives you two 64GB cards — a total of 128GB of storage. The read speed is 80 MB/s, which means transferring files to a computer is not painfully slow, but it is roughly half the peak of the SanDisk Pro card. The cards include RTV silicone coating for shock and vibration protection and hold FCC, CE, and ROSH certifications.

Reviewers point out that the write speed is “very slow but decent quality.” This matters: if your camera demands high sustained write speeds for RAW bursts, the Cloudisk cards will fill the buffer quickly and take time to clear. They work fine for single-shot photography, video on less demanding cameras, and as backup spares.

One reviewer noted these are a “quality, affordable alternative to SanDisk for older cameras,” which is the right use-case. They are not for a pro who needs 10 fps bursts, but for a hobbyist with an older DSLR who wants plenty of storage at low cost, this pack delivers decent value.

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The cheapest reliable card in the list — built for entry-level DSLRs and retro computer projects.

With a 20 MB/s write speed and 8GB capacity, this card is not going to win any speed contests. It has a 20 MB/s write speed compared to the SanDisk Extreme Pro’s 150 MB/s, and 8GB capacity compared to the 128GB card’s 128GB. But it fills a real niche: entry-level DSLRs that do not shoot fast bursts, and retro computer builds where it replaces a failing hard drive in an iPod Video or NEC PC-98. Shoppers say that “burst speed matches 266x cards (13 RAW/52 JPEG)” on a Canon 5D Mark II, so for slow-paced studio, macro, or landscape work, it is perfectly adequate.

Weighing just 0.4 ounces, it is the lightest card here — it weighs 0.4 ounces compared to the Lexar 1066x’s 1.2 ounces. That makes no difference in a camera, but for a portable device mod, every gram matters. The MLC NAND flash memory is a solid older technology that prioritizes reliability over raw speed.

The obvious limitation is capacity and write speed. For rapid RAW bursts, one buyer mentioned it “misses shots” because the card cannot keep up. 8GB holds roughly 999+ images on a 5D Mark II, so it will fill up fast if you shoot heavily. It is best thought of as a cheap backup or a card for an older body that does not need blazing speed.