Pros: Lowered my processor temp by 20 degrees over my Intel heat sink that came with my Pentium D. Still runs 55 degrees C on silent operation (fan speed 1800 RPM)

Cons: THIS THING IS BIG! REALLY BIG! I have a pretty sizable ATX case and it just barely fit. I had to remove the plastic fixture on the heat sink and the air funnel on the panel door to make it fit. Only buy it if you have a huge case. Did I mention that this thing is big? It's BIG!

Overall Review: ...... it's big.