I got between 5-25% more shots depending on the settings used - but the claimed '15 seconds shooting at 20fps RAW+JPEG'... I simply didn't get those results - it's roughly half that. And tbh it is using the lowest quality settings which I would NOT recommend! Having said all that, I tend to shoot at 12-15 FPS and in those settings - it goes and goes. If shooting just RAW it will shoot forever at 12-15 FPS with the right cards.
See my CF Express Guide test results here: https://learn.mattgranger.com/courses/CFXB
Expert Nikon Set up Guide here: https://learn.mattgranger.com/courses/zsetup
Cards used 1 - https://bhpho.to/3GMe5ur
2 - https://geni.us/jg5ZZS2 | https://bhpho.to/3bDzp6Y
Todays Test Results FIRMWARE V1.0 RAW Only to Card
1. 20FPS Lossless
- 68 shots HE*
- 167 shots HE
- 199 shots
Raw to Card 1 - top JPEG to card 2 20FPS
Lossless - 45 shots
HE* - 51 shots
HE - 53 shots
FIRMWARE V1.1 RAW Only to Card 1. 20FPS
Lossless - 72 shots
HE* - 171 shots HE