We really need your FULL system specs. Especially the case you have.
As for myself I dropped this baby in to my computer and it cooled the internal temps by about 12 degrees F.http://www.newegg.com/Product/Product.aspx?Item=N82E16817993002
It will also hold 4 hard drives and at $21 it is pretty cheap. This device takes up 3 full 5.25" bays so be sure you have the space for it.
This is not the best picture but this is what it looks like in my Cooler Master Centurion 534 case: