Comparison of Angelbird SE and SanDisk Extreme Pro for Nikon Z9

More info: nikonzuser.blogspot.com/2022/...
CFExpress type B memory cards have become the new standard for high end consumer cameras. Compared with previous standards like SD and CompactFlash, these are way faster. But this speed comes at a cost: Much higher price. To get a card with a reasonable size, you must often expect to pay at least USD100, and often double that.
With that in mind, I was happy to come across the Angelbird 512 GB AV Pro SE card. At less than USD200, it seems like too good to be true for a 512 GB card. As I wasn't planning on using the high end video features of the Nikon Z9, I took the chance.
To compare how they perform with the Nikon Z9, I set up the camera to 20 FPS, and to make the task of saving images as tough as possible, I used uncompressed RAW files, as well as JPEG. This means that each image typically takes up about 75 MB of space each.
You'll see that while the camera buffer is being filled up, both cards perform the same. This goes on for about two seconds, where the camera takes 20 pictures per second. After this, the Angelbird does 10 FPS, while the SanDisk only gets 6 FPS. Wait, the Angelbird card was supposed to be the slower of the two? How does this make sense?
As it is in many other areas -- you may have heard that your mileage may vary -- the specifications are not always relevant for the actual performance. There are many different ways of measuring the write speed, for example, over how long time should the writing speed be sustained? So a real life test is best.
The positive outcome here is that the cheaper card, the Angelbird 512 GB AV Pro SE, comes out best, and also has way more space.

[@cironephoto]

any issues with the angelbird not fitting well in either one of the card slots?

[@FredrikGlckner]

No, my two cards work well in both slots.

[@randomtalks1988]

Cudnt understand a thing if u r not talkinh in the video