Mikhailtech take a look at three well performing P4 heatsinks from Asian Vital Components (AVC).

From what I could see, the fins are also melted on the part that comes in contact with the base, so maybe AVC forgot to mention the soldering or my eyes played tricks on me (after all, it's a very small space between those fins and I could be seeing things that aren't there). Because these fins aren't very solid, the fan could not be attached using the traditional four screws, so AVC went for a more subtle approach and used a cover, or shroud, that protects the fins from bending and holds the fan in place.

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