Delkin Devices128GB POWER CFexpress Type B Memory Card (DCFX1-128)

Great price and cracking product backed by a lifetime warranty.I did unfortunately receive a mis labelled product from what you can see in the attached photo, but after speaking with Delkin Support they assured me that it was just a labelling issue and that they can replace it but that it should perform at the rated 1730/1540 and work with 8k RAW from Canon R5.I went ahead and tested it in my Sandisk CF Express card reader connected to a usb-c 3.1 gen2 port and the following was returned using crystal disk mark - sequentialread 1000~write 930~These were the max that is achievable using USB, so its hard to test the 1730/1540 without using a CF Express PCIe Reader, the speeds were a little faster than my 128GB Lexar CF Express which is rated at the same speed but within margin of error.I then proceeded to test in my Canon R5 and to my relief the card had no problems with buffering recording 8K Raw or taking Raw photos at 20fps.I called Delkin Support back to confirm that the card worked as they said it would, they still offered to replace the card as they couldn't guarantee that a replacement from Amazon wouldn't have the same label, I responded saying not to worry - its a label and it works as described.It's a shame that the issue has happened but it seems silly that some of the reviewers haven't gone ahead and tested it and just jumped straight to the conclusion that it as it reads 600 that it must be slower.Amazon must have a large amount of these floating around with the incorrect label, Delkin support provide a lifetime warranty and their UK support answers in less than a minute and are keen to help.

I was lucky to get this card at £130. I have not managed to benchmark to the full stated speeds but have consistently got about 1000MBs for both read and write using a USB 3.2 prograde card reader and BlackMagic disk speed app.No issues using it in an R5 for either stills or video. Keeps up with the camera nicely. Does get quite warm in the reader but that doesn't bother me as I eject it as soon as everything has downloaded.Mine was definitely a genuine card as I checked the serial number with Delkin UK.

This was purchased following various reviews I had read, good value for money and so far works faultlessly and no buffering issues with burst photography

For the record, no issues with Nikon Z6ii so far and registering with Delkin was fine.

I bought one thinking I was getting the right product delivered. once I received the memory card it was a slower speed (not as advertised) so I could not use it. a replacement was sent to me which again was the same slower speed card. I returned them both over a month ago and I am yet to receive my refund!!! NOT HAPPY! 3 months later still waiting for a refund

I have just found out, to great cost, that using a Nikon Z7II this card is not on Nikon's recommended list. The reviews I read rated it highly and I generally use it for stills but have just been caught out when using it for a long (8min) video shoot. The file was corrupted and the film is unrepeatable. I have spent days trying to retreive it but Rescue Pro etc cannot find the corruption. All I have is a .MOV thumbnail. Up until now it has worked well with stills and shorter video so my review is not conclusive but just be aware and check your camera manufacturers recommendations. This has potentially cost me a great deal. This will happen with other card makes too. I have had issues with San Disk and a D810.Be aware, that is all I am saying.