System Monitor + Info

The Open Hardware Monitor is a free open source software that monitors temperature sensors, fan speeds, voltages, load and clock speeds of a computer.

Monitoring temperatures and status of system components such as CPU, GPU and hard disk drive, fan speeds

PassMark PerformanceTest benchmarks the speed of your PC computer hardware, then compares the result to other machines. Includes disk, 3D and CPU tests.

System information and diagnostics utility, 64-bit CPU and memory benchmarking, real-time hardware monitoring, advanced system stability testing, and export options in multiple formats.

Professional Windows diagnostic tool offering real-time hardware monitoring and comprehensive device information, ideal for experts and integrators.

Belarc Advisor generates a detailed report (html format) of your installed software, hardware and security vulnerabilities in your Web browser.

Manage performance, temperatures, and devices all from a single application. NZXT CAM is fast, efficient, and easy-to-use, allowing you to control every aspect of your computer.

Displays real-time CPU, RAM, GPU, network, and drive stats in a customizable Windows sidebar, supports hotkeys, alerts, all DPI monitors, and includes a clock.

HWMonitor for Windows® x86/x64 is a hardware monitoring program that reads PC system's main health sensors : voltages, temperatures, powers, currents, fans speed, utilization, clock speeds…

A lightweight utility providing detailed information on video cards and graphics processors. Displays clocks, tests PCI-Express, and supports GPUs.

SANDRA is a system analyser that includes benchmarking and testing modules. Its scope of work is not restricted to the local system, though. It can analyze remote systems on a Windows domain.