Cost to performance ratio....if you actually do the "Math"...
I'll take AMD any day.
It's not that AMD CPU's aren't as powerful, it's the fact that
99% of code is written, and optimized, for the Intel platform.
That is the primary area that gives them "The performance Edge".
AMD must "Mimic" the Intel platform internally and, therefore,
suffers...it's not a "level" playing field...but AMD certainly does
a good job...I'll put my system up against an i7 anyday...and,
as I said, probably paid 1/4 of what the i7 person paid...