1. You don't say "which" games you normally play.
2. You don't say what resolutions you play using.
3. You don't say to what speed you will overclock the cpu.
4. There is very little agreement to this date on what will bottleneck what. Opinions on bottlenecking, are like noses since everybody has one.
5. If the cpu is clocked to at least 4.0Ghz and you game at 1920 x 1080 and greater, then the bottlenecking should not be a problem at all.