Processor • Processor is the brain of your computer. • Some key concepts – Clock : In a computer, clock speed refers to the number of pulses per second that sets the tempo for the processor. – Cache A small but fast memory area. Levels of cache exists. – Bus (FSB and BSB) : Collection of wires connecting different devices. – Pipeline : Implementation technique where multiple instructions are ovelapped.
• 32/64 bit processors – The amount of data a processor can process in a clock cycle. • Clock speed and overclocking – BUS SPEED x MULTIPLIER = CPU SPEED (Clock) • Which processor is faster? – 100MHz x 10.0 = 1000 MHz – 133MHz x 7.5 = 997.5 MHz
• How do you pick a processor for your system? – Performance & Cost • How to measure performance? – Clock speed is one measure of computer “power”, but it is not always directly proportional to the performance level. – The type of microprocessor, the bus architecture, and the nature of the instruction set, all make a difference. examples : P4 3.06 GHz, P4 3.0B GHz, P4 3.0C GHz – Check for bus speed and cache size as well.
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