For each extension, you can open its description webpage available at the OpenGL Extension Registry or at NVIDIA's OpenGL Extensions spec. Display of the OpenGL extensions supported by your graphics card or display of all existing OpenGL extensions no matter what graphics card you have.Display of OpenCL API support and extensions.Display of the main OpenGL capabilities (OpenGL version, texture size, number of texture units, etc.).
Quick view of the graphics configuration (graphics card / GPU type, amount of video memory, drivers version).Furthermore, this software will allow you to view extensive reports in text or XML format. GPU Caps Viewer is a free and highly-featured tool that quickly describes the essential capabilities of your graphics card/GPU including GPU type, amount of VRAM, OpenGL API support level, OpenGL API extensions database and general system configuration, as well as a GPU-Stress-Test functionality (GPU-Burner).