MKN PerformanceMonitor shows detailed information about system, I/O, and processor performance. It creates performance graphs for each installed processor, and the system I/O history.
MKN PerformanceMonitor shows information about each processor core in the system, including the CPU usage, the KERNEL mode time, hardware processor usage, and the processor's current clock frequency. It also shows information about the system performance, including the total CPU usage, the system CPU usage, context switches, system calls, and pagefaults. In addition, it displays information about the I/O read, write, and other operations and the amount of data transferred.

The license of this software is Freeware, you can free download and free use this cpu benchmark software.