3. Consider two different implementations, machine M1 and machine M2, of the same instruction set architecture as described below. Note that there are four types of instructions (A, B, C and D) in the instruction set. M1: clock rate =800MHz, CPI_A A=1, CPI_B =2, CPI_C =3, CPI_D =4 M2: clock rate =900MHz, CPI_A = 3, CPI_B =2,CPI_C =4,CPI_D =2 Assume that the 'peak performance' is defined as the fastest rate that a machine can execute an instruction sequence chosen to maximize that rate. What are the peak performances of M1 and M2 expressed as instructions per second? Answer with MIPS. 4. If the number of instructions executed in a certain program is divided equally among the four types of instructions shown in #3, which machine is faster? Please show how much times faster than the other machine. 5. Consider the CPI values from #3 and the instruction type distribution from #4. At what clock rate would M1 have the same performance as the 900MHz version of M2