I had bought Two CPU fans 1 alpha and another and neither one fit in our case's ,my brother-inlaw has the same case and motherboard and we had to use a chopsaw to make one fit against the power supply,I also had to modify a section of the case because it was too tight,now i purchased the alpha 125 and that doesn't fit in my case ,the question is how can you reccomend a fan without knowing what kind of case and motherboard a person possessoces ,not that i don't appreciate your answers but i just though someone should ??? the case and motherboard the person has, before given a specfic answer, i might be wrong for saying this but we all don't have the same case!!!!!! or the same socket or slot