Hi, I was looking for gaming GPUs. I found the GTX 660 is good as the 7850. The GTX 660 costs 280$ and the 7850 costs 270$. I friend is going to buy me one for free so I searched for the GTX 680 and I found it well but first I need to know if my FX 6100 is going to bottleneck the 680 I looked for the answer in Internet but everything that I saw was almost useless. I need help with this before I got my new one. If you have any suggestions about some GPUs please tell me (If it's about nVidia it'll be better cause I want one of them and I don't know why).