I just added the same HSF to mine a little while ago and I can say that the Core Contact Freezer for my purposes does not need another fan.
I also now have a total of 4 fans on my case, 1 intake front bottom, 3 exhaust (1 rear, 2 top,) and have the side grill unobstructed which draws in alot of air!!
Theres my temps.
I'm pretty pleased with the cpu oc'd at 3.4