No bottleneck will happen except some games were intel cpus perform better then amd. Bottlenecking is when 1 component limits the other component(s) to stop it running from its full potential.
GPU z and gpu load in games is best way to measure it and task manager cpu utilisation. 99% gpu load means that you are fine with no bottleneck. Lower cpu usage means you have a decent c[u ready for even more higher end graphics without bottlenecking it.
Thanks, I'm on a budget, and if I feel like spending a bit more, I can get the Radeon HD 7770( only 1GB, not 2) would that be better? I CANNOT afford any nVidia, (plus I hate them, and have had many problems with them in the past)