Spire BFA07B2 Heatsink From All Angles
	The Fan: The fan is rotates around 4500RPM and produces a moderate amount of noise (about 50 dBA). To protect the impeller from stray power plugs, or other hazards within the computer case, the fan has a wire grill. Wire grills are better than laser-cut grills because there is virtually no impact on air intake. The fan draws its power via a three-pin motherboard fan header.
	Heatsink Top: The cross cuts do not go all the way through the body of the heatsink but rather just the outside 4 fins. The internal fins remain straight except for a space cut to hold the clip in place. The fan shroud is plastic and clips into place with a few tabs. It's interesting to note where the fulcrum of the clip is situated...
	Side A: The 33 fins are 0.75mm thick and spaced 1mm apart. The base is 8mm thick which seems like a lot for an aluminum heatsink, but I suppose the trend has been going in that direction for some time now. In an interesting attempt to ensure the heatsink will fit most motherboards, the side fins have a curved cut from 73mm down to 60mm.
	Side B: Notice the curved cuts on the outside fins for better clearance? The clip is a tool-based and locks into all three tabs of the socket. At the fulcrum a small tab juts out to lock the clip in place. The four cross cuts are 2mm wide for added ventilation of exhaust air.
	Heatsink Base: The base is machined remarkably well for such an economical heatsink. In recent times there has been a lot of effort by manufacturers to improve the base finish (smoothness, and flatness) of their heatsinks. This is a good example of what to look for in a socket A heatsink. Not only is there a good section of pre-applied thermal compound, but the base has also been machined flat and smooth.