Cooling the CPU is one of the things you need to do to keep that little bit of silicon alive and kicking. For most of the known world, the stock cooling solutionthat is delivered with the processor is enough to meet their needs, though there are plenty of them toiling away in cases with restrictive airflow and temperatures that really would make most enthusiasts cringe. That section is far removed from the enthusiast segment of the market though. You have several levels in the enthusiast sector. You have the (guy or gal) who really just wants a good cool running systemall the way up to the person who cares only about temperatures at all costs. The largest cost is usually the noise generated from the high CPM fans that scream just as loud as your wife, girlfriend or sister's latest hairdryer. In this regard especially, Noctua has you covered.The Noctua NH-U9B Special Edition SE2 is an updated to this award winning model. The updates are much the same as on the NH-U12P SE 1366 with the inclusion of a second NF-B9 fan and the inclusion of the SecuFirm2 multi socket mounting system. This system gives compatibility over a wide range of sockets that include AM2, AM2+, AM3, Intel Socket 775,1156 and 1366. As a smaller heatsink the NH-U9B uses 92mm fans and can be used in areas where a larger heatsink cannot be used, such as in HTPC and smaller cases. Let's see how well it performs in a larger case and what kind of performance it can deliver. If it's anything like its larger cousins, it should do well.