Hi people,
Thank You for Your great software and comments.
I did few experiments with this benchmark on my machine and I got some strange results. You can find results attached. Just to mention, after I had started benchmark I minimized window and waited for it's termination. Have I told You I'm still beginner with OpenGL:)?

I'm wondering, why I got such results (big frame-rate). Whould I get approximate results in case benchmark rendered to texture and then painted rectangle with that texture (again minimized window)? Also, is there any computation on GPU while window is minimized (if we use window's framebuffer)?
Btw, second screenshot shows results when window is not minimized.

Regards,
Nenad.