Compact high power personal computer with improved air cooling system

Claim 1

A personal computer comprising: a housing defining a cubical space in which components of said computer are located, said housing comprising a rectangular base, and a cover mounted on and overlying said base, said cover comprising a front and two side walls provided with a plurality of coolant air intake openings, said housing having a rear wall; a fan mounted in said rear wall for sucking coolant air into said housing through said intake openings and exhausting such air through said rear wall; a modular technology unit (MTU) mounted on said base directly in front of said fan, said MTU comprising a first printed circuit board (PCB) having a plurality of connectors thereon and internal wiring interconnecting said connectors, said first PCB being flat and lying in a horizontal plane immediately above said base, a riser PCB connected to one of said connectors on said first PCB, said riser PCB being flat and lying in a vertical plane extending rearwardly in said housing, said riser PCB having a plurality of connectors mounted thereon and internal wiring connected to said connectors, a plurality of generally flat cards mounted on said connectors of said first PCB and generally lying in parallel rearwardly extending planes defining between such cards a plurality of rearwardly extending coolant air flow channels, said cards including a plurality of heat generating functional modules for performing data processing functions, and a power regulator card mounted on one of said connectors on said riser PCB and extending along a top edge thereof, said power regulator card being generally flat and lying in a horizontal plane overlying said first mentioned cards and comprising a plurality of heat generating modules for converting a relatively higher DC voltage into a plurality of lower DC voltages for operating said functional modules on said first mentioned cards; and a bulk power supply mounted on said base, said bulk power supply having openings therein through which coolant air can flow.