The GZ-RX515 supports a better memory card type than most comparable spec camcorders that have been around for the last year. This video camera supports an SDXC memory card, whereas most small sensor size camcorders that have been available for a comparable time to it 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).
An SDXC memory card is actually the best supported memory card type across all recently released similar spec camcorders.
An SD memory card is the worst supported memory card type amongst similar types of camcorder.
SDHC cards are DS cards with a higher capacity of up to 32GB.