With some high CPU-intensive games there will be a bottleneck if compared to superior performing CPU's. It will not be very much though. GPU-intensive games will perform very well with that CPU/GPU combination.
A GTX 970 will perform best with it though, it would be the best match in my opinion. It also depends on what resolution you are gaming on, if you're gaming at 1080p or lower getting anything higher than a GTX 970 is pointless, they will perform almost the same.