Yes, your system will bottleneck somewhere no-matter what you get. Buy a GTX Titan and use a i3 Processor you have a bottleneck. Buy a Titan and i Intel i7 Black Edition, well, those two match good but then your internet or your HDD will hurt you. No-matter what you will have a bottleneck just do the best you can matching up components to where the work the best together. Also get a K series processor if your getting one and OC it to the MAX.
Sincerely,
Casey