FurMark is a powerful tool that will be primarily useful for overclockers, allowing for stress testing of graphics cards compatible with the OpenGL API, checking the stability of the graphics card and the capabilities of the cooling system
GPU-Z is an excellent utility for viewing various information about the video card and its graphics processor, such as model, BIOS version, chip revision number, DirectX support, and much more. Works with NVIDIA and ATI cards
A toolkit for providing detailed system information and diagnosing various PC components. There are 13 benchmarks, 34 modules with detailed information, support for a huge number of different devices and much more.
Gigabyte Xtreme Engine is another tool of this manufacturer designed for monitoring and overclocking GPU directed this time to the owners of powerful graphics chips NVIDIA GeForce GTX and ATI / AMD RX. It works well with Gigabyte GPUs as well as other manufacturers.
OCCT (OverClock Checking Tool) is very appreciated among the so-called oveclockers a tool to test the underlying computer components that have been "overclocked" to achieve the highest possible performance. It also provides detailed information, including about your processor.