sure, it will help. you won't see twice the performance as with one fan, but it does move more air. however it isn't worth it because it gets really loud. i put two slow 60mm fans together and they sounded like a 6800 rpm delta. now i just run one y.s. tech 60mm quiet fan (3800 rpm, 21 cfm, 28 dba) on my FOP38 (which i guess should now be called a FOP21). my proc is a celeron ii 700 @ 872, and the temps are fine (never above 100).