Computer system

A desktop computing system, comprising:

• a housing having a longitudinal axis and a circular cross section that is perpendicular to the longitudinal axis and that defines and encloses an internal volume that is symmetric about the longitudinal axis and having a wall having a wall thickness that varies smoothly from a first thickness to a reduced thickness;
• a heat sink having at least three planar walls at least one of which is generally parallel to the longitudinal axis, the at least three planar walls enclose and define a central region having a polygonal cross section that is perpendicular to the longitudinal axis;
• and
• a computational component positioned within the internal volume and supported by and in thermal contact with the heat sink.