Summary: I was surprised how quiet this computer is . . what a bonus that is. It is very fast as well. I have experimented with AMD microprocessors, but it is best to pay a bit more and get the Intel model instead. I haven't had a moment of trouble with this PC, so can't anything about customer support. My guess is that it is mediocre. I have a two year warranty on it because I put it on a special Platinum credit card. Hopefully will never have to use it.