with the CPU not overclocked, I believe the CPU would reach 100% usage before the GPU in BF4. So in certain circumstances, it would bottleneck. But in practise, it wouldn't be an issue.
eg, in BF4 my I5-3570k @ 4.4GHz often hits 100% whilst HD7950 crossfire are only at 50%. So the CPU is essentially bottlenecking. Is it a problem? No, because I get a consistent 60fps and this is the only game which I've seen the CPU go to 100%.