With the release of fast NVMe PCIe-based storage on our computers, we have gotten used to their incredible transfer speeds. Camera manufacturers have been catching up with the latest technology, and thanks to their efforts, we now have cameras with XQD and CFexpress memory card slots as well. As an owner of both Nikon Z6 and Z7 mirrorless cameras, I have been heavily using XQD cards with these cameras. Ever since Nikon delivered a firmware update to make the cameras compatible with CFexpress, I really wanted to find out if I could take advantage of these faster cards. In addition, I wanted to see if faster CFexpress cards are going to make any difference in buffer capacity and the speed of image transfer when compared to XQD cards. After I obtained the Lexar 128 GB Professional CFexpress memory card, I decided to test it thoroughly on my computer as well as my Nikon Z cameras to see how it performs.