CPU cooler for OC

Hello,

I am thinking about doing an overclock on my build



CPU/GPU AMD A83870K APU with Radeon 6550HD GPU

CPU Cooler Stock AMD Cooler

Mobo Gigabyte GA-A75M-D2H (Bios F5)

Memory G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)

PSU OCZ ModXstream Pro 700W

Anyways I am almost certain that a Stock cooler will not work for Overclocking and was looking for some good suggestions for an after market cooler. I have one in mind but was just looking for some other opinions on weather the one I am looking at is a good choice or not. I am looking at the Cooler Master Hyper TX3


Also too I understand that every situation is different but has anyone on here overclocked an APU build or even a 3870K and did you see any noticeable results.

Thanks,