NX2 rumors In: Cameras Posted March 19, 2018 8 minutes ago, Mokara said: The difference is due not to the interface itself, but what is happening internally in those devices. Just because an interface is capable of a particular speed does not mean that the device can generate or receive data at that rate. To use a UHS-II spec label they have to be capable of meeting the 300 mB/s data transfer requirement however. In the case of a camera like the NX, for example, there is a bunch of processing going on that limits the availability of the data, and that results in lower speeds when recording natively. However, we know the minimum base internal data rate of the camera since it does a 6.5k sensor read at 8 bits/30 fps in preparing data for 4K video. That is a bandwidth of approximately 630 mB/s. The camera does processing on that data however, and the bottleneck for data delivery is the processing itself, not the UHS-II interface. If you found a way to side step that processing you should be able to deliver enough data to swamp the interface, since the camera is dealing internally with at least twice the amount specified by UHS-II. If you only used a crop of the sensor however you would be able to (in theory) deliver a RAW data feed as I explained earlier. Yeah I get this and this is fine, but last time I checked the bitrate of 4K 12/14bit uncompressed RAW at 25fps exceeded the maximum continuous write speed of the fastest UHS-II cards. How do you solve that bottleneck?