Which processor we pick depends on what types of programs we plan on running. If we care about single-threaded performance, processor A would be better because processor A would run 2x as fast as B on a single-threaded program.
Processor B would be better if you care about programs with a lot of parallelism. This is because processor A has 4P units of throughput while processor B has 16 * P/2 = 8P units of throughput.
Which processor we pick depends on what types of programs we plan on running. If we care about single-threaded performance, processor A would be better because processor A would run 2x as fast as B on a single-threaded program. Processor B would be better if you care about programs with a lot of parallelism. This is because processor A has 4P units of throughput while processor B has 16 * P/2 = 8P units of throughput.