GeForce GT 650M Linux Driver

Linux 32-bit 
http://us.download.nvidia.com/XFree86/Linux-x86/340.58/NVIDIA-Linux-x86-340.58.run

Linux 64-bit
http://us.download.nvidia.com/XFree86/Linux-x86_64/340.58/NVIDIA-Linux-x86_64-340.58.run