Can you be a little more accurate then "to hot to touch"? Like 50°c is to hot to touch, and 70°c is to hot to touch, but theres a huge difference between those two temps. You said the ram is oc'ed, how high did you raise the voltage? Ram can get pretty toasty if you crank up the voltage.
That Corsair cooler is going to make your pc sound like a dying banshee, but it wont help your temp to much. I would get a fet 80mm or 120mm case fans and put them on both sides of your memory. Case airflow will improve and the memory should also drop to a more reasonable temp.
If you do want a fan thing like the Corsair one look for either the OCZ XTC Active RAM Cooler or the Thermalright HR-07. Both will work better then the Corsair thing.