The JVC GZ-GX1 supports an SDXC memory card which is better than most video cameras of a similar age and spec to it. Most video cameras that have been around for a similar time to it support an SDHC memory card. In addition, this video camera 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 amongst all camcorders of a comparable spec and age to the GZ-GX1.
The worst supported memory card type across similar types of camcorder is MicroSD (Transflash).
SDHC cards are DS cards with a higher capacity of up to 32GB.