joeddod - Good to see you figured it out for yourself. That doesn't happen very often at this forum.
Falcon - at 6,000 rpm that would have be something like a small Delta fan. Delta actually had a 40mm fan rated at 9,500 rpm, 15.69 cfm, and 41.9 dBA. They were used to cool northbridge and southbridge chipsets:http://www.sidewindercomputers.com/delfub.html
I used to install Panaflo 120mm high rpm case fans. Didn't care about noise back then. Those were the good old days!