I have noticed that when my a50 cooler spins to max speed it is quite loud and off putting, took a look on these forums and have seen that the stock fan for the unit can be easily replaced with any 120mm fan. Is this the case? I t is mentioned by others here that the Alaska apache ak-fn058 fan is a good replacement as it is very quiet. I took a look at this item and notice that it does not spin as fast as the corsairs stock fan, does this make a difference to cooling in any major way? My processor is an i5 2500k oc to 4.6ghz (the z68i bundle from this site). If this fan is not good enough what is recommended?