Well the next gen consoles are based off of i believe Kaveri/Jaguar which are iterations of Piledriver/Steamroller FX chips. They're quad cores so i would suggest at least FX-4350, or even FX-8350. For Intel, the 3570k is a great chip, can't go wrong with that either.
I STRONLGY recommend not to buy any of the 41xx, 61xx, 81xx mainly because bulldozer was not that great, i bought a bulldozer chip and went to Piledriver and instantly saw a big difference. Bulldozer was just about entering a new architecture, but Bulldozer did a big upgrade. In some tests, it can even keep up with the 3770k which is quite a big feat. I don't care what any Intel fan boy says, new gen games prefer AMD. Especially when you have a Radeon card as well.