I'm thinking about buying a different HSF for my system, but its really a 3 wire fan with an adapter for 4 pin motherboards. I can't find any info if it'll make the fan work the same as the stock HSF.
Stock HSF with 4th wire
http://www.tigerdirect.com/images/SkuImages/gallery/large/TC3G-2028-a.jpg
TT Golden Orb with 4 wire adapter
http://images10.newegg.com/NeweggImage/productimage/35-106-062-06.JPG
Stock HSF with 4th wire
http://www.tigerdirect.com/images/SkuImages/gallery/large/TC3G-2028-a.jpg
TT Golden Orb with 4 wire adapter
http://images10.newegg.com/NeweggImage/productimage/35-106-062-06.JPG