good machine but temperature problem
Used for work for the last 1 year developing 3D and robotics applications.
Overall it works as it should but the network card disappears when the pc is used at full speed in a hot room for a long period of time.
So to play a recent 3D game on a network, you need to be in a well air-conditioned room!
The problem appears under windows or ubuntu so it is a hardware problem.