IMO...it's not a matter of "AMD vs Intel" at all.
Intel has always had chips that were, according to spec, superior to AMD chips. That does not mean that AMD chips are crap, it just means that...since there are only 2 CPU manufacturers these days...you only have two options when selecting a CPU.
Intel processors also have always cost considerably more than comparable AMD CPUs. For those who want to pay for processing "power/speed" that is not really important in how they use their systems (like me), a CPU should be chosen based on what you are willing to spend. The overhyped "advantages" of one chip versus another...may actually exist...but for the average computer user, it's of no consequence in routine computer use.
If you game, consider yourself an "enthusiast", or otherwise want to preen yourself and bore others with how fast your processor is and how much you paid for it...by all means, just roll out the bucks and buy an Intel chip that really won't make any of your day-to-day activities on a system...improved substantially. If you want to feel that your purchase was a good value...buy an AMD chip.
Our computers...are toys for adults and some children. They are useful and provide a great deal (IMO) of enjoyment. With any toy that one purchases, there is little point or need to justify the purchase...other than the usual "I want that."
Since your title concerns motherboard, not CPU, you should pick a board which provides the capabilities or frills that you desire...then see what CPUs accommodate that board. If you don't game...there is little point in paying for a board which provides crossfire and other features that make gamers and some "enthusiasts" gush with joy...those boards will be more expensive than a simpler board which meets your needs and costs less.
My two cents...
Edited by hamluis, 24 March 2016 - 05:21 PM.