CPU cooling arrangement

A CPU cooling arrangement comprising a heat sink fastened to a CPU holder that holds a CPU, said heat sink being disposed in contact with the CPU in said CPU holder, and said heat sink comprising two heat sink units abutted against each other, said heat sink units each comprising a vertically extending solid base, a bottom contact face disposed at a bottom side of said solid base for contacting the CPU in said CPU holder, two side panels respectively disposed at two opposite lateral sides of said solid base, and vertical radiation fins perpendicularly extended from a front side of said solid base between said side panels, two fans respectively mounted on the radiation fins of said heat sink units of said heat sink, said fans having horizontal axes extending in parallel with the CPU holder so that air first flows horizontally between the fins from the fans to the solid base, a portion of said air then flowing downwardly between the fins toward the CPU holder to directly carry heat away from components on the CPU holder, and a portion of said air flowing upward and outward to carry heat away from said heat sink, and further comprising fastening means adapted for securing said fans to said heat sink units of said heat sink.