I wouldn't say SUPER computer; I gues it is impervious to radiation and extreme temperatures, but as far as power goes it has sbout the same power of my dumbphone.
"The rover is equipped with two computers, but only one is active at a time. Both are built around a radiation-hardened BAE RAD750 microchip operating at up to 200 megahertz. Each computer is equipped with 2 gigabytes of flash memory, 256 megabytes of random access memory and 256 kilobytes of erasable programmable read-only memory."
The RAD750s also meet lifetime dosage standards that are up to a million times more extreme than those considered fatal for a human being. As a result, over a 15-year period, the RAD750 chips aboard Curiosity would not be expected to suffer more than one external event requiring intervention from Earth.
"The RAD750 card is designed to accommodate all those single event effects and survive them," Vic Scuderi, BAE business manager for satellite electronics, said in an interview. "The ultimate goal is one upset is allowed in 15 years. An upset means an intervention from Earth -- one 'blue screen of death' in 15 years. We typically have contracts that (specify) that."