M40/M60/K80/V100 driver version is: 387.34,it's FREE.
P100 requires special drivers included with NV Grid 5.1. This driver needs to pay. Free drivers do not have OpenGL features.
AND
If you are using a Windows system, the free driver does not support OpenGL-desktop mode, usually working in OpenGL-angle or OpenGL-software mode.
Measure the performance of OpenGL, I use the most stupid way.
Download doll.zip to generate a model to compare the time consumed by different GPUs.