i7Baby :
Try and find eg Asus warranty.
If the seller offers 3 years then that's what you're after. Once they put that in writing then that's what they have to to stick by.
instantly found ASUS motherboard says 36 months
newegg well they will cover you for 30 days after that you are going to call asrock and be at their mercy pretty much doesnt really matter what newegg put there.
amazon for extreme 4 says to look on manufacturers website
superbiiz says after 30 days call manufacturer
mwave lists 1 year warranty
microcenter lists 1 year
asrock website lists 1 year
my conclusion is its 1 year warranty only place that says 3 is newegg
i am going to email newegg and ask them as its a board i always use to recommend