"Noctua has once again proved that you really do get what you pay for. The Noctua NH-D15S may be priced in line with many large water coolers, but it can still keep up with them in terms of performance and it outperforms almost everything on the market in terms of acoustics and compatibility. One of the best coolers money can buy."
Peter Donnell - eTeknix.
Noctua NH-D15S CPU cooler review by eTeknix - Introduction & Conclusion.