I've recently got a new xfx Hd 7750 1gb ddr5 core edition GPU.
However, when i checked with GPU-Z, it says that it is running in x8 capacity.
Need advice on how to utilize the GPU's max potential.
Going from a x8 to a x16 PCIe connection will not change the performance of that card at all. I'm not saying you shouldn't look into why GPU-Z reports x8, just that you shouldn't be worried about it from a performance standpoint. These results are from a test conducted with a 7970, just to give you an idea of what I'm talking about. http://images.anandtech.com/graphs/graph5458/43816.png