what is the falw when Comparing computer performance using only the clock rate?

Question

its for a university assignment.

Answer 1

Processors work in different ways and may use different numbers of clock cycles to do the same thing - an example is the Assembly language instruction NOP - standing for No Opperation or do-nothing. The 680X processor takes a single cycle to execute this instruction - 1us on 1MHz Clock, a Z80 took 4 cycles but the clock rate was 2.5Mhz so it actually took 1.66 us, the ST6210 would take approx 23 cycles running on 10Mhz clock 2.3 uS - the big difference is that the ST micro is internally a 1 bit micro with a serial data bus. Going by clock frequency the ST has it hands down at 10Mhz but by actual work (if a NOP can be called work) the slowest processor wins out.

Answer 2

you're only looking at one part of the system. you could have a clock rate that's 10 years ahead of its time, but if it's running 10 year old hardware then the system is going to be dragged down.

Answer 3

overclocking sends more power to all the parts inside and make them work harder and faster but your computer will not last as long. thats why u should only overclock it by 2