Actually the sramble started when the Athlon moved to the thunderbird core and commercially hit 1ghz. The Athlon owned "netburst" for most its life. then 64 was a good effort as well, but fizzled quickly as Intel laid the smackdown. I was an avid AMD user since my K5(mainly out of budget back then), I still don't see them coming up with anything anytime soon that Intel won't answer back to.do you honestly think amd has no answer? please, they will leave intel in a sramble just like when the 64 bit chip came out.
The core series was just as much of a home run for Intel as the Athlon was for AMD. Difference is Intel still has all the money and market share, so this resurgence can be fatal to AMD whereas Athlon wasn't fatal to Intel.