To anyone regretting their 290X (or any other GPU for that matter) purchase, don't.
The only reason this thing is looking so good in stock benches is because it's the only card in the list that's running at its max speeds.
That's what it would have looked like if it ran the sort of profiles the 290X does. The new config is ~14% faster on average according to anand.
It's a good way to make benches look really nice but the truth of the matter is that you're getting a part with 10% less shaders than the 290X which will translate roughly to 10% less performance (at the same clock) due to Hawaii definitely not being ROP or bandwidth limited at all.