computers with power exhaust systems include a visually dominant top or side mounted power exhaust stack in fluid communication with an exhaust fan mounted proximate to the top or side mounted stack . the power exhaust fan pulls ambient air in from the lower portion of the computer and forces it out the top or a top portion of the housing into a power exhaust stack . the power exhaust stack is prominently positioned on the computer to provide a visual focal point reminiscent of an automotive “ souped - up ” operating machine which can forcibly cool the computer even when loaded with high - end graphics cards and fast microprocessors . the power exhaust stacks can be configured in a number of ways such as in an arcuate or linearly extending diesel truck - like chrome stack configuration , or in a header or laterally extending exhaust pipe configuration .