I should mentionthe HSF's I've used:
1. No-name, with 5000+ rpm 60mm fan
Not quiet, not cool, not good enough!
2. Thermosonic Thermoengine V60-4210
Not bad, fairly quiet (stock fan) and adequate cooling, apparently takes more powerful fans well.
Unusual "through flow" design with a central core (described as either solid, hollow, or filled with some form of heat transfer improver) surrounded by fins.
(Still in use).
3. Spire "Rock" and/or similar Speeze models, 80mm fan on Cu-Al tapered fin unit
Replaced the "no name" as the computer fair "standard" that most traders had - generally quieter and better cooling than any 60mm fanned unit - this style represented the move to mainstream of the 80mm fanned heatsink.
4. Arctic Cooling "Copper Silent" 2L
80mm open-frame fan (illuminated, not that I care) over a large Al finblock, bonded to a smaller copper transfer plate.
http://www.3dvelocity.com/reviews/ar...ccooling_3.htm
As in that review, I'm a little sceptical of the copper content.
Plus point, the 3-step fan speed, and I needed a spare cooler, as the fan on the 4210 is not as quiet as it used to be. At £10 (UK) for a name-brand HSF seemed good (though as it turns out, probably about the same as online +P&P)
I could try an 80-60 adapter and fan on it on it, I suppose.