I got mine on Monday or Tuesday and no cracks or dings on the miner. Packaging was good.   (will post some pix when i get home)   Its up and running in ECO mode but fan is on Auto which avg like 900 - 1050 RPM.  My son says the fan is loud.  (FYI i'm deaf) Makes me wonder if the fan is "sucking" air off the heat sinks and up thru the top.  ( can feel it) 
This normal?