official GPU Monitor is a Windows desktop gadget that displays all the basic information about your graphics card: temperature, fan speed, GPU load, memory load, etc. It has flexible settings - you can customize the appearance of graphs, the amount of information displayed, etc.
GPU Monitor is very easy to install. If you have Windows 7, just install the gadget by double-clicking its executable file. After that it will appear in the lists of gadgets. If you have Windows 8 or higher, you first need to install a program that enables gadget support (for example, 8GadgetPack), since by default their support is disabled.
GPU Monitor displays all the basic information about your graphics card in real time - temperature, load, fan speed, memory usage, etc. The data is displayed as numbers and graphs. The gadget can beep in case of overheating.
GPU Monitor has flexible settings. For example, you can change the color of the graphs and fonts of each indicator, enable the display of data for multiple graphics cards at once, disable the graphs, change the units of measurement, etc.