The invention discloses a water-cooled radiator, a fabrication method thereof and a cooling device with the radiator. The water-cooled radiator comprises a
heat sink and
water tanks, wherein the
heat sink comprises a groove-shaped
metal body and a plurality of cooling fins, the cooling fins are arranged on the body, the
metal body is provided with a plurality of water-cooled passages passing through the two ends of the
metal body, gaps between grooves and the cooling fins are directly communicated in a pass-through way to form first cooling air ducts in a penetrating way, a second cooling air duct is formed between adjacent two cooling fins, the first cooling air duct and the second cooling air duct are mutually communicated, the bottoms of the cooling fins and the metal body are a continuous integrated structure, the
water tanks are arranged at the two opposite ends of the metal body and are provided with water chambers used for accommodating a working liquid, and the water-cooled passages are communicated with the water chambers. The fins and the metal body are the integrated structure, the problems of influence in heat conduction and liquid leakage caused by unfavorable
welding are prevented to the greatest extent, the
welding process is substituted by integrated molding, the first yield is high, the manufacturing cost is relatively reduced, the
cooling efficiency is high in stability, and high consistency is achieved.