GpuCapsViewer is an OpenGL tool which displays details information about your graphic card (hardware, OpenGL capabilities, GPU core temperature, etc.).
Moreover, it integrates a GPU Burner to make the GPU temperature climb in order to test the graphic card stability.
To install automatically GPU Caps Viewer on your LiberKey, make sure you previously activated files associations from the "LiberKey Tools" menu.
You can then open the file directly to start the installation.