I'm somewhat surprised this heatsink works so well - the spacing between the wires in fairly tight; but apparently it works quite well.
Yes, it is fairly tight, but unlike a fin which is a planar structure, the wire is only a single thin round strut, so the airflow resistance is minimal. Blowing through it with your mouth, it's easy to feel how low the impedance is compared to any other heatsink.
This cooler is the best passive heatsink Silent
PCReview has ever seen and they don't give it top honors?
As others have suggested, it has some limitations. An Editor's Choice award basically goes to a component which we'd choose to use in every silent PC build if at all possible. This one, which is the best passive CPU HS we've tested, has the following but
- it is huge, so doesn't fit well in all cases/setups
- the high price cannot be ignored
- it is not ideal for a system which will be at high load for long periods, esp. if longevity of mobo components is desired (the absence of CPU cooler fan does mean VRMs and other mobo components will run hotter)
- even w/95W TDP CPUs, it would tend to run a bit too hot if stressed hard/long in the summer.