He has a point but as you CAN afford both you may aswell get both, the 4770k (i7) will help when titles start to ultilise multi-core technology. Its already starting to happen/.
The Reference 290's were noisey, the aftermarket 290, like the windforce are pretty quiet and cooler than the reference version a great choice of card.
Still torn between i5-4670k or i7-4770k but from what you said if games are gonna start using multi-threading i'm thinking the 4770k the better option.
Please let me know what Reference and Aftermarket mean when it comes to components. heard this sop many times...