Will having MSI GTX 980s in SLI bottleneck at my CPU(i5 4690)?

IndyTechie

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Apr 15, 2015
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I have an i5-4690, not the k (overclocked version), and I currently have a single MSI GTX 980. This set up has no issues. My question is, can I add one more GTX 980 in SLI without it bottlenecking at my CPU? The GPU is already on its way and I want to know if I'm ok with what I have, or if I should just go ahead and pick up an i7-4970k? If its not necessary I'd prefer not to since its possible I may have to reformat my OS when changing the CPU.