One quibble--a bit of sound design took me slightly out of the documentary: The voice of Oppy included the sound of a hard disk drive (HDD) spinning up and its moving actuator arm clattering 💽

However, it seems NASA sent DRAM, EEPROM, and flash RAM:

"The rovers run a VxWorks embedded operating system on a radiation-hardened 20 MHz RAD6000 CPU with 128 MB of DRAM with error detection and correction and 3 MB of EEPROM. Each rover also has 256 MB of flash memory."

Via:
https://en.wikipedia.org/wiki/Mars_Exploration_Rover#Power_and_electronic_systems