AMD is back? I won't habeeb it.
It's better than Bulldozer but it's still far worse single-threaded performance compared to Sandy Bridge, and forget about IVB. Games performance is still worse and power consumption is still high.
They're not hitting 20nm until 2014, at which point Intel will have released 14nm silicon with their next major architecture change in the pipeline and the gap will likely have widened.
I want AMD to succeed but this pace is not working for them, they're not getting into new markets aggressively enough, and they're slashing their engineering workforce.
I'm sure they'll survive the next few years but I doubt we'll see them as a big player in the performance x86 space again.