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 = 800 MHz,

CPI_A = 1, CPI_B = 2, CPI_C = 3, CPI_D = 4

M2: clock rate = 550 MHz,

CPI_A = 2, CPI_B = 3, CPI_C = 4, CPI_D = 1

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 in #3, how much faster is M2 than M1?