The Sony HXR-NX3 supports an SDXC memory card which is better than most small sensor size camcorders that were launched more than two years ago. Most small sensor size camcorders that were released around the same time as it support an SD memory card. In addition, this Sony camcorder support an MS Duo and SDHC memory card. SDXC cards are SD cards but with a much higher capacity and faster processing speeds. They have a maximum capacity of 2TB (Terabytes).
An SDXC memory card is in fact the best supported memory card type across all camcorders of a similar type and age to the HXR-NX3.
The worst supported memory card type amongst comparable types of camcorder is MicroSD (Transflash).
SDHC cards are DS cards with a higher capacity of up to 32GB.