For those that were as curious as I was, here's an article describing the computer operating the rover.
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 full article
http://news.cnet.com/8301-11386_3-57491281-76/slow-but-rugged-curiositys-computer-was-built-for-mars/
