Pros: Very quiet, efficiently removes heat from the main processor and the video processor as well.

Cons: The pump failed after about 4 months. I called them and had them ship me a replacement pump without having to ship the bad one back to them 1st. They (Zalman) wanted the unit 1st to evaluate but I could not be down that long.

Overall Review: I did not read the online manual before I got it. Apparently it would not work on some motherboards that did not have these 4 locating holes around the processor. Mine did not have them so I had to get another motherboard and made sure it was going to fit. It did and it works very well