Summary: My main goal was to get a heatsink that did not have a proprietary fan / mounting system, etc. My stock intel fan has been going out slowly, causing a lot of vibrations, etc. There did not seem to be a direct replacement easily available.
Pros: Simple Removable non-proprietary fan Mounting Plate for fan is also removable Cheap
Cons: No copper on heatsink Fan is somewhat noisy Didn't improve my P4 3GHz over stock heatsink
Summary: Replacement for a heat sink/fan with broken clips on a Celeron motherboard that I pulled from my Dad's old system to use a NAS server. I would've preferred a lower profile heat sink block but the free shipping made this one a bargain.
Pros: The fan (60mm) was quieter than the old fan (80mm).
Cons: I was surprised that the heat sink block was identical to the old one.