Practice Basic Blocks of Computer - GATE & ESE

Basic Blocks of Computer

Consider the following processors (ns stands for nanoseconds). Assume that the pipeline registers have zero latency.

P₁: Four-stage pipeline with stage latencies 2 ns, 1 ns, 1.5 ns, 1 ns.

P₂: Four-stage pipeline with stage latencies .5 ns, 1.5 ns, 1.5 ns, 1.5 ns.

P₃: Five-stage pipeline with stage latencies 0.5 ns, 1 ns, 1.5 ns, 1.5 ns, 1 ns.

P₄: Five-stage pipeline with stage latencies 0.5 ns, 0.5 ns, 1 ns, 1 ns, 1.1 ns.

Which processor has the highest peak clock frequency?

P₃

P₁

$\mathrm{P_4}$

P₂