I'm looking for CPU fan/heatsink solutions for a Tyan board with two dual core opterons. the board needs a heatsink with 4.1" between mounting screws. I have a cooljag fat-7-e 1u, but it is too loud, so I'm looking for something with a 4 pin connector for variable speed. Heatsinks with this mounting pitch seem very rare, and I haven't found any with a 4 pin fan. Can anyone suggest a solution? 50db in my living room is too much.