It’s not like going from UHS-I to UHS-II. They simply are not compatible technologies. Why do I say that? Because I’m testing memory card readers and my ProGrade CFexpress reader will not read XQD memory cards.Īlso, my XQD memory card reader will not read my CFexpress cards. This is my assumption, but the next batch of Nikon, Panasonic, Canon cameras will likely no longer support XQD memory cards. Nobody uses them, but they still work in Sony cameras and only Sony cameras. What’s going to happen is, XQD is going to become to CFExpress what MemoryStick Duo became to SD memory cards.

I don’t like writing articles like this since people should be able to buy whatever they want, but there is good reason to stop buying XQD memory cards and it has to do with future compatibility with CFexpress devices and it’s already starting to happen with CFexpress readers.Ĭamera companies have to get Sony’s consent to use this XQD technology in their gear. I’ll keep you guys updated as I continue on my insanely expensive CFexpress memory card adventure, but I want to advise you on something that could affect your wallet in the future. But when the card is cold, running at about 750MB/s write in the speed test, then it crashes in my Z6 a lot. What’s wrong with my 64GB card in the Z6? It’s interesting, if I heat up the 64GB Sandisk CFe Card with the Black Magic or the AJA Speed test to the point where it thermal throttles down to 200MB/s write speeds (CFexpress cards thermal throttle now, super cool), then it works totally fine without issue in my Z6. There are some issues with the smaller 64GB cards in the Nikon Z6 but the larger cards (128GB and bigger) are working ok according to a lot of people I’ve been talking to. CFexpress cards are here now and I’ve been testing them as I get them.

Sony xqd card reader not working