Question

What are the main characteristics of CPU

Answer 1

the main characteristics of CPU that help us to do things in right way

Answer 2

Clock speed
The clock speed of a processor, which is specified in megahertz (MHz) or gigahertz (GHz), determines its performance, but clock speeds are meaningless across processor lines. For example, a 3.2 GHz Prescott-core Pentium 4 is about 6.7% faster than a 3.0 GHz Prescott-core Pentium 4, as the relative clock speeds would suggest. However, a 3.0 GHz Celeron processor is slower than a 2.8 GHz Pentium 4, primarily because the Celeron has a smaller L2 cache and uses a slower host-bus speed. Similarly, when the Pentium 4 was introduced at 1.3 GHz, its performance was actually lower than that of the 1 GHz Pentium III processor that it was intended to replace. That was true because the Pentium 4 architecture is less efficient clock-for-clock than the earlier Pentium III architecture.

Clock speed is useless for comparing AMD and Intel processors. AMD processors run at much lower clock speeds than Intel processors, but do about 50% more work per clock tick. Broadly speaking, an AMD Athlon 64 running at 2.0 GHz has about the same overall performance as an Intel Pentium 4 running at 3.0 GHz.

'''MODEL NUMBERS VERSUS CLOCK SPEEDS'''

Because AMD is always at a clock speed disadvantage versus Intel, AMD uses model numbers rather than clock speeds to designate their processors. For example, an AMD Athlon 64 processor that runs at 2.0 GHz may have the model number 3000+, which indicates that the processor has roughly the same performance as a 3.0 GHz Intel model. (AMD fiercely denies that their model numbers are intended to be compared to Intel clock speeds, but knowledgeable observers ignore those denials.)