I just received a rather marvellous present from the tax man totally £1600 and have decided to blow the whole lot I'll be getting a GTX680 soon and want to watercool that along with my CPU. My question is, with a 360rad, are the 2 200mm fans at the top of my haf x enough to cool the rad or will I need to add some to the under side of the rad? As in have 3 120mm fans under it with the 200mm fans on top. My Specs i7 2600k gtx580 (soon to be 680) 8gb Kingston 1600mhz RAM Asus p8p67 deluxe
I would remove the 200mm fans completely, as they will most likely have a negative effect on airflow through the rad. It is also somewhat pointless to watercool the 680. You might be better of spending the money elsewhere.
If you want to watercool it look at my thread (link in sig) as the first part was when I watercooled my HAF 932 which is basically the same as the HAF X.