Depends of what AMD Heatpipe cooler they included. There are 2 one has a 70mm clip on fan, the other has an 80mm screw in Delta fan that can be much more easily replaced.
I had the latter and replaced the Delta 80mm fan with an 80-120mm adapter and a 120mm fan and it works great, not only does it blow a ton of air through the heatpipes but it also blows right onto the CPU base and the surrounding areas of the MB, cools the capacitors around the CPU nicely, which the Freezer Pro is not designed to do.