It depends on how one defines slow. Curiosity's onboard computer is 100x faster than the previous two Mars rovers, and has twice as much ram. But that's only 20

It depends on how one defines slow. Curiosity's onboard computer is 100x faster than the previous two Mars rovers, and has twice as much ram. But that's only 200MHz and 256MB respectively. With the exception of Sojourner, the first rover successfully placed on Mars, all Mars rovers have run VxWorks. http://en.wikipedia.org/wiki/Comparison_of_embedded_computer_systems_on_board_the_Mars_rovers http://en.wikipedia.org/wiki/Comparison_of_embedded_computer...