I'm not interested for overclocking. I'm going to be using an Athlon 64 II x4 640 at stock values. I just need to replace the stock cooler with a better performance and silence cooler.
No doubt Hyper 212+... since its budget you are looking for... i dont know about silent but i never heard anyone complaining of noise from its users... if its loud then for its price you can swap better fans of your choice and still be inside budget...