Hi there guys, I'm a new owner of a Haswell MacBook pro 15", the model with the 755 Nvidia. So far I'm loving it, this thing is a beast. However, whenever I plug it to my Asus PB278 it starts coil whining real bad, it sounds like it is gonna take off. I mean I sort of expected it considering the internals but nevertheless. It is not that it bothers me, I just want to know: Is this is normal? The coil whining happens periodically, even while just doing regular task like emails and web browsing. I'm assuming is the Nvidia card kicking in, but.. who knows.. Is there a way to set up the iris-nvidia load? Comments and help are appreciated.