CPU:  Cycles Per Instruction

CPU (Microprocessor) speed determined by

• Clock speed: megahertz(MHz) (millions of cycles per second), or gigahertz (GHz) (billions)
• Word size: number of bits to process at one time. (32-bit processor processes 32 bits at a time)
• Processor type: dual-core processor has two processors on a single chip. (single-core, quad-core)