Provided is a computer. The computer includes: a plurality of parts including heat-generating components that generate heat during operation; a case in which the parts are installed; and one or more heat-dissipating plates separated from the case by a predetermined distance and facing the case; wherein the heat-generating components include a central processing unit and a power supply, and the central processing unit and the power supply are each thermally connected to the heat-dissipating plates so that heat generated by the central processing unit and the power supply can be dissipated to the outside of the case via the heat-dissipating plates. Accordingly, the heat-generating components installed in the case can be noiselessly and efficiently cooled without using cooling fans.