AMD's issues have mostly boiled down to single thread performance as well as power consumption. I am not sure how exactly simultaneous multithreading will help in single thread scenarios.
As for the 40% performance improvement, I don't know if people remember but AMD's K10 (Barcelona/Phenom) was so hyped, hardware forums at that time (2007) exploded with fictional test showing outrages numbers. Bulldozer sadly had been for quite some time even slower that K10.
I have never owned an Intel CPU and I hope I will never have to buy one just because there will be no one else to buy from. :(
As for the 40% performance improvement, I don't know if people remember but AMD's K10 (Barcelona/Phenom) was so hyped, hardware forums at that time (2007) exploded with fictional test showing outrages numbers. Bulldozer sadly had been for quite some time even slower that K10.
I have never owned an Intel CPU and I hope I will never have to buy one just because there will be no one else to buy from. :(