Recently i've been asking around for gpu water coolers and such because my components are getting to hot. I only just discovered i have 2 extra fans slots that fit 120mm and 140mm that i could use for cold air intake. Which case fans should i get to maximize my intake. I would maybe get three to replace a defualt case fan that blows the cpu air out. That is also 120mm or 140mm. I heard that 140mm is betrer because it blows slower with better results. Is this true?