I have a i5-2500K cpu overclocked to 4.5 GHZ with 2 GTX 680s in SLI. I'm looking to upgrade my system with a GTX 980. Would my CPU bottleneck the GTX 980 upgrade?
680 SLI to a single 980 is not really an upgrade imo unless microstuttering is really a problem. It's actually a downgrade. I suggest you waiting further more until the new series.