SysGauge is a free system and performance monitoring utility allowing one to monitor the CPU usage, memory usage, network transfer rate, operating system performance, the status and resource usage of running processes, file system performance, USB performance, disk space usage, disk read activity, disk write activity, disk read transfer rate, disk write transfer rate, disk read IOPS and disk write IOPS for individual logical disks or all physical disks installed in the computer.

Download SysGauge v1.5.18
32 bit http://www.sysgauge.com/setups/sysgauge_setup_v1.5.18.exe
64 bit http://www.sysgauge.com/setups_x64/sysgauge_setup_v1.5.18_x64.exe