The SDR-S70 supports an SDXC memory card which is better than most video cameras of a similar age and type to it. Most video cameras of this type and age support an SD memory card. This video camera also supports 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 in fact the best supported memory card type amongst all camcorders of a comparable spec and age to the SDR-S70.
Amongst similar types of camcorder the worst supported memory card type is MicroSD (Transflash).
SDHC cards are DS cards with a higher capacity of up to 32GB.