3D Mark 06 CPU test World Record with Passive Cooling!
 

Chris Ramseyer overclocked his € 2900 AMD processors to 2702MHz and
achieved a CPU Score of 3762 points. Using two passive Noctua NH-U12
heat-sinks, Ramseyer proved that top CPU performance doesn't have to be
connected with intricate, loud and non-practical cooling systems: "I
would also like to get a little ROI out to Noctua. This system is cooled
with two of their NH-U12 heat sinks. The amazing thing is I am using
them totally PASSIVE!