Bitspower Persective views of the heatsink

Bitspower NP80D Heatsink From All Angles
	The Fan: The moderately powerful 20mm thick fan doesn't really need a fan grill which is good. It's worth mentioning that this is about the only heatsink we have seen to use a 20mm thick fan rather than the more powerful 25mm variety. The fan sits 4mm above the tips of the fins and attaches directly to the fan shroud. The draws its power from the motherboard fan header and supports RPM monitoring.
	Heatsink Top: What at first appears to be four sets of fins is really just two, with a slight cut partially down the middle. Each of those four sections will be about 27mm wide, but no more than half way down the height of the fin. There are 27 fins in the NP80D in total and the heatsink measures 83mm wide.
	Side A: Looks like we dropped it an it got all bent out of shape doesn't it? Well that isn't the case, the NP80D was manufactured so that each of the skived fins would have a slight curve to it. The idea could very well be to make the flow of air travel further, and thus pickup more heat energy from the aluminum. Each of those fins is 0.7mm thick, up from the standard 0.3mm we often see. Each fin is separated by about 1.5mm and the base plate measures 8mm thick.
	Side B: The clip is not really stiff enough to crack an Athlon in half thankfully. It can be engaged by just using you finger. The fan shroud screws into the base at four points and is fairly open to allow exhaust air to escape easily.
	Heatsink Base: The base has been sanded over or brushed with a few different grits of roughness, and while it is relatively smooth to the touch there is a lot of deep scarring from the process left. A good quality thermal compound would be worth using to fill in all those tiny voids. In terms of flatness, the base of the NP80D is alright. There is some slight bowing towards the center, but the angle is very shallow and not consistent across the entire surface. Some lapping would be a good idea.

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