The HXR-NX100 supports an SDXC memory card which is better than most big sensor size video cameras that came out more than a year ago. Most big sensor size video cameras that were released one year ago support an 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).
This video camera's memory card type (SDXC) is actually the best supported memory card type across all video cameras of this spec and age.
An SD memory card is the worst supported memory card type amongst comparable types of video camera.
SDHC cards are DS cards with a higher capacity of up to 32GB.