For 200 mm fans, I don't know, but for 120mm these should help http://www.newegg.com/Product/Product.aspx?Item=9SIA59T3WN4384&cm_re=Id_cooling_sf-_-9SIA59T3WN4384-_-Product. They are MUCH better than those Noctua nfs f12 in terms of static pressure and airflow and are much cheaper.