The Intel CPU families vary in voltages, sizes, and special design features. CISC can operate more complex functions, but they are significantly slower. RISC is another CPU instruction set. RISC operates on fewer and smaller functions but processes them very quickly. Only applications written for the RISC instruction set can take advantage of this feature.
Megahertz is the number of cycles per second.
Clock doubling or tripling technology speeds up the processor by increasing the clock speed internal to the chip. RAM is random access memory. RAM is erased every time the system is turned off. ROM is read-only memory. This memory is used for the long-term storage of programs and data as firmware on a chip.