Features Blazing-Fast Speeds That Deliver Raw 4K Video When you're shooting where the action is, the CFexpress Card Type B unleashes the RAW performance of your gear. With read speeds up to 1700MB/s and write speeds up to 1400MB/s, you'll get low latency during high-speed recording and an enhanced workflow efficiency that's far beyond anything existing SanDisk cards deliver. This card enables smooth, RAW 4K video capture with sustainable performance. Backward-compatible with select XQD cameras that adopt firmware enabling CFexpress. Specifications Capacity: 256 GB Compatibility: Backwards-compatible with select current XQD host devices Dimensions (L x W x H): 1.52" x 1.17" x 0.15" Sequential Read Performance: Up to 1700MB/s Sequential Write Performance: Up to 1200MB/s Package Content 1x SanDisk 256GB Extreme PRO CFexpress Card Type B - SDCFE-256G-GN4NN READ 1700 MB/S WRITE 1200MB/S
Features Blazing-Fast Speeds That Deliver Raw 4K Video When you're shooting where the action is, the CFexpress Card Type B unleashes the RAW performance of your gear. With read speeds up to 1700MB/s and write speeds up to 1400MB/s, you'll get low latency during high-speed recording and an enhanced workflow efficiency that's far beyond anything existing SanDisk cards deliver. This card enables smooth, RAW 4K video capture with sustainable performance. Backward-compatible with select XQD cameras that adopt firmware enabling CFexpress. Specifications Capacity: 256 GB Compatibility: Backwards-compatible with select current XQD host devices Dimensions (L x W x H): 1.52" x 1.17" x 0.15" Sequential Read Performance: Up to 1700MB/s Sequential Write Performance: Up to 1200MB/s Package Content 1x SanDisk 256GB Extreme PRO CFexpress Card Type B - SDCFE-256G-GN4NN READ 1700 MB/S WRITE 1200MB/S
Features Blazing-Fast Speeds That Deliver Raw 4K Video When you're shooting where the action is, the CFexpress Card Type B unleashes the RAW performance of your gear. With read speeds up to 1700MB/s and write speeds up to 1400MB/s, you'll get low latency during high-speed recording and an enhanced workflow efficiency that's far beyond anything existing SanDisk cards deliver. This card enables smooth, RAW 4K video capture with sustainable performance. Backward-compatible with select XQD cameras that adopt firmware enabling CFexpress. Specifications Capacity: 256 GB Compatibility: Backwards-compatible with select current XQD host devices Dimensions (L x W x H): 1.52" x 1.17" x 0.15" Sequential Read Performance: Up to 1700MB/s Sequential Write Performance: Up to 1200MB/s Package Content 1x SanDisk 256GB Extreme PRO CFexpress Card Type B - SDCFE-256G-GN4NN READ 1700 MB/S WRITE 1200MB/S
Features Blazing-Fast Speeds That Deliver Raw 4K Video When you're shooting where the action is, the CFexpress Card Type B unleashes the RAW performance of your gear. With read speeds up to 1700MB/s and write speeds up to 1400MB/s, you'll get low latency during high-speed recording and an enhanced workflow efficiency that's far beyond anything existing SanDisk cards deliver. This card enables smooth, RAW 4K video capture with sustainable performance. Backward-compatible with select XQD cameras that adopt firmware enabling CFexpress. Specifications Capacity: 256 GB Compatibility: Backwards-compatible with select current XQD host devices Dimensions (L x W x H): 1.52" x 1.17" x 0.15" Sequential Read Performance: Up to 1700MB/s Sequential Write Performance: Up to 1200MB/s Package Content 1x SanDisk 256GB Extreme PRO CFexpress Card Type B - SDCFE-256G-GN4NN READ 1700 MB/S WRITE 1200MB/S
Last updated at 11/29/2025 23:15:26
originally posted on bhphotovideo.com
The Critical Review posted:Hot Card, Almost too Hot to Handle! ByBobI had the same issue, with a different card reader than he used. I transferred just 3 images to the computer, which read out super fast, no issues. But while I was on the computer doing something else, I left this card in the reader for about 10-15 minutes before taking out. It was hot, though nothing was being transferred either way on it.I wasn't sure if it was the card or reader? But having this same issue, on two different readers makes me wonder. I'm thinking that maybe when the card is in a reader, it is in a constant ON mode whether transferring images or not, so card heats up. There is a marketing comment about using it over 20 minutes at a time due to heat, so maybe that's the ... MoreThe Critical Review posted:Hot Card, Almost too Hot to Handle! ByBobI had the same issue, with a different card reader than he used. I transferred just 3 images to the computer, which read out super fast, no issues. But while I was on the computer doing something else, I left this card in the reader for about 10-15 minutes before taking out. It was hot, though nothing was being transferred either way on it.I wasn't sure if it was the card or reader? But having this same issue, on two different readers makes me wonder. I'm thinking that maybe when the card is in a reader, it is in a constant ON mode whether transferring images or not, so card heats up. There is a marketing comment about using it over 20 minutes at a time due to heat, so maybe that's the reason?The card transfers very fast, I have no complaints with it, so I will use in the reader only while transferring files, then remove right after. With my XQD card and reader, I could just leave the card sit in there, but I can't with this card.
originally posted on bhphotovideo.com
This card is fast and it doubles the storage capacity of my previous XQD card. I also like the stiffer case used here. SD cards and the older CF cards had some flex to them which sometimes caused problems. I am very pleased with this card. It fits in an XQD card slotr but may not work with older readers. If you are using both XQD and CF Express cards with a reader, make sure the reader will handle both types of cards. A problem was reported by one user when attempting to read XQD cards in an off-brand reader which was supposed to read both types. In summary the increased storage and speed of the CF Express type B card is a welcome improvement and works well in compatible devices. It is well worth the money.
originally posted on bhphotovideo.com
I know this review is for the CF Express cards. But, I’ve been a customer of B&H photo since I bought my first brick of Kodachrome 64 from them. So, when it was time to get to memory cards for my new to me Canon 1DX mark iii….. I knew where to go.The cards allow the camera to perform at an insane rate without buffering. I wanted the biggest cards I could get because I don’t want to have to switch cards if I fill one up at a game. I was at a high school volleyball game last week and shot 2038 images and almost filled up a card on my old camera. With this camera and these cards I will never come close to filling them up.Great cards, great customer service and I think I got them at a very reasonable price.
| Capacity | 256 GB |
The Critical Review posted:Hot Card, Almost too Hot to Handle! ByBobI had the same issue, with a different card reader than he used. I transferred just 3 images to the computer, which read out super fast, no issues. But while I was on the computer doing something else, I left this card in the reader for about 10-15 minutes before taking out. It was hot, though nothing was being transferred either way on it.I wasn't sure if it was the card or reader? But having this same issue, on two different readers makes me wonder. I'm thinking that maybe when the card is in a reader, it is in a constant ON mode whether transferring images or not, so card heats up. There is a marketing comment about using it over 20 minutes at a time due to heat, so maybe that's the ... MoreThe Critical Review posted:Hot Card, Almost too Hot to Handle! ByBobI had the same issue, with a different card reader than he used. I transferred just 3 images to the computer, which read out super fast, no issues. But while I was on the computer doing something else, I left this card in the reader for about 10-15 minutes before taking out. It was hot, though nothing was being transferred either way on it.I wasn't sure if it was the card or reader? But having this same issue, on two different readers makes me wonder. I'm thinking that maybe when the card is in a reader, it is in a constant ON mode whether transferring images or not, so card heats up. There is a marketing comment about using it over 20 minutes at a time due to heat, so maybe that's the reason?The card transfers very fast, I have no complaints with it, so I will use in the reader only while transferring files, then remove right after. With my XQD card and reader, I could just leave the card sit in there, but I can't with this card.
This card is fast and it doubles the storage capacity of my previous XQD card. I also like the stiffer case used here. SD cards and the older CF cards had some flex to them which sometimes caused problems. I am very pleased with this card. It fits in an XQD card slotr but may not work with older readers. If you are using both XQD and CF Express cards with a reader, make sure the reader will handle both types of cards. A problem was reported by one user when attempting to read XQD cards in an off-brand reader which was supposed to read both types. In summary the increased storage and speed of the CF Express type B card is a welcome improvement and works well in compatible devices. It is well worth the money.
I know this review is for the CF Express cards. But, I’ve been a customer of B&H photo since I bought my first brick of Kodachrome 64 from them. So, when it was time to get to memory cards for my new to me Canon 1DX mark iii….. I knew where to go.The cards allow the camera to perform at an insane rate without buffering. I wanted the biggest cards I could get because I don’t want to have to switch cards if I fill one up at a game. I was at a high school volleyball game last week and shot 2038 images and almost filled up a card on my old camera. With this camera and these cards I will never come close to filling them up.Great cards, great customer service and I think I got them at a very reasonable price.
This is the CF or Compact Flash Express card or CF Expess for the modern mirrorless digital camera. These replaced those used in DSLR cameras.I'm using these where the older Compact Flash cards used in full frame DSLR cameras would be accepted before SD cards became all the rage. If you switched to mirrorless and need speed, you must use a modern CFEXPRESS card not the old Compact Flash. This card works in my Z in conjunction with high speed SD for dual writing of images. This card has the speed and ability to work in conjunction with dual write cameras. You can't lose with this solution.
I shoot mostly still photos of people and when I recently purchased a new camera, after reading that the Extreme Pro cards were gradually replacing my XQD cards, I picked up a new SanDisk 256GB card. The stats are impressive -- over 3 times faster than my Sony XQD'sI really doubt that I'll ever need it with still photography. However, if I decide to do some 8K video, I'll be ready.My only complaint: My first shoot using the Extreme PRO, I plugged it into the Sony reader on my Mac and.....Nothing! Please be aware that you need a card reader made for the Extreme PRO cards. I switched to direct download from the camera -- a nuisance. I now have a (generic) reader that handles both kinds of cards.Happy shooting.
I bought this because I thought I lost my one-and-only other CFexpress card, (with about 3,000 vacation photos and a few hundred videos on it, thanks for asking). But then, after receiving this one, my prodigal card returned to me. Wheeew!It too, is a SanDisk Extreme Pro CFexpress card and has never failed me. So, in spite of so little time using this new one, I'm going ahead and giving this one 5 stars based on my old one.My old one, BTW, is only 128GB. In a camera pumping out 45MB RAW photos, it lasted a full week in New Zealand and almost all of our first full day in Australia. Now, with 4X that much memory in this new card, my camera will probably NEVER have to switch over to its second, back-up card slot!But then, that's a separate concern: If this new, ... MoreI bought this because I thought I lost my one-and-only other CFexpress card, (with about 3,000 vacation photos and a few hundred videos on it, thanks for asking). But then, after receiving this one, my prodigal card returned to me. Wheeew!It too, is a SanDisk Extreme Pro CFexpress card and has never failed me. So, in spite of so little time using this new one, I'm going ahead and giving this one 5 stars based on my old one.My old one, BTW, is only 128GB. In a camera pumping out 45MB RAW photos, it lasted a full week in New Zealand and almost all of our first full day in Australia. Now, with 4X that much memory in this new card, my camera will probably NEVER have to switch over to its second, back-up card slot!But then, that's a separate concern: If this new, 512MB card does ever fail, how many treasured photos will I lose? So, with the recent drop in price for these, I will probably invest in several more smaller, 128MB cards. I'll stick with this same brand, of course.
| Capacity | 256 GB |
