Information you can view
This software utility analyzes the hardware and software of your PC and informs you about your graphics renderer, such as the DirectX version, the shader model, the OpenGL version, the driver version, the renderer model and the adapter RAM. Each of these values affects the performance of the PC rendering capability, making a better graphics card, along with more RAM modules could significantly boost your PC.
Use a benchmark
You can manually test the performance of your graphics renderer by using the OpenGL Extension Viewer tests - if you experience delays or slowdowns on your PC, it is best to choose a lower resolution for your screen.
The tests offered by this application can assess the functionality of OpenGL 1.1 to OpenGL 3.1, and you can combine screen resolutions, texture LOD bias, multisampling, and effects such as PBuffer or fog.
Performance and final assessment
The performance of the computer could be hampered from time to time, especially during the performance test, but that is no reason for panic since it is quite normal. The response time is good, but it also depends on the configuration of your PC, running better on new machines than older ones.
Because it can save you a lot of time spent on debugging OpenGL apps, the OpenGL Extension Viewer proves to be a useful tool that can be used by both beginners and experienced people.