Nvidia GPU on VNC session

I am not sure if this is the right place to ask this question.

But I have a RHEL 7 machine with Nvidia Quadro K620 , I am accessing the machine through VNC session.

I made sure to install Nvidia’s driver but running glxinfo | grep “OpenGL”, it returns :
OpenGL renderer string: llvmpipe (LLVM 7.0, 256 bits)
OpenGL version string: 2.1 Mesa 18.3.4

I am not sure what is goiing wrong so that the GPU is not detected or working correctly