The JVC GZ-GX1 supports an SDXC memory card which is better than the SDHC memory card supported by most video cameras of a comparable age and type to it. This video camera also supports an SD 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 camcorders that were launched around the same time as the GZ-GX1.
The worst supported memory card type across comparable types of video camera is MS Pro-HG.
SDHC cards are DS cards with a higher capacity of up to 32GB.