My CPU Bottleneck my GPU?

[Pixel223]

My Specs:
GPU:GeForce GTX 650-E
CPU:Intel(R) Pentium(R) CPU G860 @ 3.GHz
RAM:4,GB DDR3(x2 2GB)
Resolution 1366x 768,60Hz
OS:Microsoft Windows 7 Ultimate

So my cpy bottleneck my gpu?
if yes how much?

 

[Pixel223]

hard drive HDD 232 GB