Patent ID: 7870888

Claim:
A heat dissipation assembly for a central processing unit, the heat dissipation assembly comprising: a heat radiator adapted to contact the central processing unit from above; a base adapted to support the central processing unit from below; a post extending upward from the base and having a hollow upper head with an internal thread therein to receive and threadedly engage with an elongated fastener; and at least a snap-on fastening mechanism which comprises a tubular member extending upward from the base and around the post and which is adapted to snap into a through hole formed in a supporting substrate of the central processing unit; the heat radiator comprising at least a fastener receiving portion for receiving the elongated fastener and aligning the elongated fastener with the post; wherein the post and the tubular member comprise different materials; wherein the post further comprises a neck portion below the upper head and surrounded by the tubular member; and wherein the upper head extends upwardly beyond the tubular member and has an outer diameter greater than both an inner diameter of the tubular member and an outer diameter of the neck portion.