Frostytech are the best place online to find great heatsinks for overheating CPUs, and noisy computers. I really like the little sound clips they include of each fan in their reviews. Today, Frosty tests a heatsink from Thermalfly.
"Thermalfly have come out with a couple really nice Intel thermal solutions of recent, and the Thermalfly I75DUB heatsink is the latest in its series. The I75DUB is based loosely on the Intel reference design, and features ultra thin bifurcated fins, a large and powerful fan and inset aluminum base. "