babernet_1 :
The 4690K can be overclocked to 5GHz to 5.5GHZ on air cooling. It will toast any 4770K in almost anything and be about $100 cheaper.
Any 5.5 (or likely anything near ) OC you may be talking about are not something to be done easily in fact the devils canyon OC record was set at computex event 4 days ago and they were professionals using only a single core.
Please dont get peoples hopes up for chips that haven't even released and we havent seen consumer samples for.